./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/02-base_25-malloc_race_cp.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/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_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/02-base_25-malloc_race_cp.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1bf1a57452cb04c4e0acc7059a368e9894233cf719b7dca68f11bd8477a0c6ed --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:27:39,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:27:39,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:27:40,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:27:40,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:27:40,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:27:40,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:27:40,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:27:40,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:27:40,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:27:40,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:27:40,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:27:40,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:27:40,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:27:40,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:27:40,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:27:40,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:27:40,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:27:40,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:27:40,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:27:40,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:27:40,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:27:40,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:27:40,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:27:40,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:27:40,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:27:40,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:27:40,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:27:40,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:27:40,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:27:40,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:27:40,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:27:40,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:27:40,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:27:40,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:27:40,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:27:40,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:27:40,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:27:40,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:27:40,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:27:40,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:27:40,110 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/config/svcomp-DataRace-32bit-Automizer_Default.epf [2021-11-13 18:27:40,142 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:27:40,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:27:40,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:27:40,144 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:27:40,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:27:40,145 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:27:40,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:27:40,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:27:40,146 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:27:40,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:27:40,147 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:27:40,147 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:27:40,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:27:40,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:27:40,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:27:40,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:27:40,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:27:40,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:27:40,149 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-11-13 18:27:40,149 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:27:40,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:27:40,150 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:27:40,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:27:40,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:27:40,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:27:40,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:27:40,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:27:40,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:27:40,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:27:40,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:27:40,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:27:40,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:27:40,153 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:27:40,154 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:27:40,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:27:40,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:27:40,155 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_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bf1a57452cb04c4e0acc7059a368e9894233cf719b7dca68f11bd8477a0c6ed [2021-11-13 18:27:40,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:27:40,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:27:40,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:27:40,592 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:27:40,593 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:27:40,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/goblint-regression/02-base_25-malloc_race_cp.i [2021-11-13 18:27:40,689 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/data/9a7697ca3/954e044eda8e43eb82f66b6b078f9046/FLAG10e7fb16b [2021-11-13 18:27:41,451 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:27:41,452 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/sv-benchmarks/c/goblint-regression/02-base_25-malloc_race_cp.i [2021-11-13 18:27:41,474 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/data/9a7697ca3/954e044eda8e43eb82f66b6b078f9046/FLAG10e7fb16b [2021-11-13 18:27:41,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/data/9a7697ca3/954e044eda8e43eb82f66b6b078f9046 [2021-11-13 18:27:41,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:27:41,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:27:41,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:27:41,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:27:41,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:27:41,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:27:41" (1/1) ... [2021-11-13 18:27:41,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@731ab10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:41, skipping insertion in model container [2021-11-13 18:27:41,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:27:41" (1/1) ... [2021-11-13 18:27:41,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:27:41,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:27:42,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:27:42,540 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:27:42,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:27:42,725 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:27:42,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:42 WrapperNode [2021-11-13 18:27:42,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:27:42,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:27:42,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:27:42,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:27:42,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:42" (1/1) ... [2021-11-13 18:27:42,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:42" (1/1) ... [2021-11-13 18:27:42,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:27:42,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:27:42,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:27:42,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:27:42,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:42" (1/1) ... [2021-11-13 18:27:42,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:42" (1/1) ... [2021-11-13 18:27:42,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:42" (1/1) ... [2021-11-13 18:27:42,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:42" (1/1) ... [2021-11-13 18:27:42,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:42" (1/1) ... [2021-11-13 18:27:42,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:42" (1/1) ... [2021-11-13 18:27:42,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:42" (1/1) ... [2021-11-13 18:27:42,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:27:42,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:27:42,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:27:42,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:27:42,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:42" (1/1) ... [2021-11-13 18:27:42,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:27:42,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:27:42,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:27:42,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:27:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:27:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:27:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:27:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:27:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-13 18:27:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:27:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-13 18:27:42,972 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-13 18:27:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:27:42,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:27:42,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:27:42,975 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 18:27:43,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:27:43,482 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:27:43,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:27:43 BoogieIcfgContainer [2021-11-13 18:27:43,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:27:43,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:27:43,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:27:43,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:27:43,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:27:41" (1/3) ... [2021-11-13 18:27:43,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa2cde2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:27:43, skipping insertion in model container [2021-11-13 18:27:43,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:42" (2/3) ... [2021-11-13 18:27:43,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa2cde2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:27:43, skipping insertion in model container [2021-11-13 18:27:43,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:27:43" (3/3) ... [2021-11-13 18:27:43,497 INFO L111 eAbstractionObserver]: Analyzing ICFG 02-base_25-malloc_race_cp.i [2021-11-13 18:27:43,504 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 18:27:43,504 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:27:43,504 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-13 18:27:43,505 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 18:27:43,556 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,557 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,557 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,557 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,558 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,558 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,558 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,559 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,560 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,561 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,562 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,562 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,562 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,585 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,585 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,587 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,588 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,588 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,588 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,589 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,589 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,590 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,590 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,590 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,591 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,592 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,592 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,593 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,593 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,594 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,594 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,596 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,596 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,596 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,597 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,597 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,598 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,599 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,599 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,600 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,616 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,616 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,616 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,617 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,618 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,618 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,619 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:43,624 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 18:27:43,700 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:27:43,719 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 18:27:43,721 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-13 18:27:43,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 115 transitions, 235 flow [2021-11-13 18:27:43,846 INFO L129 PetriNetUnfolder]: 0/114 cut-off events. [2021-11-13 18:27:43,847 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:27:43,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 114 events. 0/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-11-13 18:27:43,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 115 transitions, 235 flow [2021-11-13 18:27:43,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 114 transitions, 231 flow [2021-11-13 18:27:43,878 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-11-13 18:27:43,878 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:27:43,878 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:43,879 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] [2021-11-13 18:27:43,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:43,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:43,888 INFO L85 PathProgramCache]: Analyzing trace with hash 753030405, now seen corresponding path program 1 times [2021-11-13 18:27:43,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:43,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832654530] [2021-11-13 18:27:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:43,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:44,217 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 18:27:44,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:44,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832654530] [2021-11-13 18:27:44,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832654530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:44,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:44,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:27:44,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566233583] [2021-11-13 18:27:44,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:44,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:27:44,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:44,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:27:44,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:44,273 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 115 [2021-11-13 18:27:44,278 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 18:27:44,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:44,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 115 [2021-11-13 18:27:44,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:44,370 INFO L129 PetriNetUnfolder]: 9/227 cut-off events. [2021-11-13 18:27:44,370 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-13 18:27:44,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 227 events. 9/227 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 722 event pairs, 9 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 200. Up to 29 conditions per place. [2021-11-13 18:27:44,378 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 10 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2021-11-13 18:27:44,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 113 transitions, 253 flow [2021-11-13 18:27:44,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:27:44,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:27:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2021-11-13 18:27:44,401 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9246376811594202 [2021-11-13 18:27:44,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2021-11-13 18:27:44,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2021-11-13 18:27:44,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:44,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2021-11-13 18:27:44,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 18:27:44,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 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 18:27:44,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 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 18:27:44,438 INFO L186 Difference]: Start difference. First operand has 118 places, 114 transitions, 231 flow. Second operand 3 states and 319 transitions. [2021-11-13 18:27:44,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 113 transitions, 253 flow [2021-11-13 18:27:44,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 113 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-13 18:27:44,449 INFO L242 Difference]: Finished difference. Result has 118 places, 113 transitions, 232 flow [2021-11-13 18:27:44,452 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=118, PETRI_TRANSITIONS=113} [2021-11-13 18:27:44,457 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 0 predicate places. [2021-11-13 18:27:44,457 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 113 transitions, 232 flow [2021-11-13 18:27:44,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 18:27:44,458 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:44,458 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] [2021-11-13 18:27:44,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:27:44,459 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:44,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2014786041, now seen corresponding path program 1 times [2021-11-13 18:27:44,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:44,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035169930] [2021-11-13 18:27:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:44,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:44,598 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 18:27:44,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:44,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035169930] [2021-11-13 18:27:44,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035169930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:44,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:44,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:27:44,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004999483] [2021-11-13 18:27:44,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:44,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:27:44,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:44,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:27:44,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:44,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 115 [2021-11-13 18:27:44,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 113 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 18:27:44,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:44,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 115 [2021-11-13 18:27:44,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:44,662 INFO L129 PetriNetUnfolder]: 0/112 cut-off events. [2021-11-13 18:27:44,662 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:27:44,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 112 events. 0/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-11-13 18:27:44,663 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 10 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2021-11-13 18:27:44,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 112 transitions, 254 flow [2021-11-13 18:27:44,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:27:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:27:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2021-11-13 18:27:44,675 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9246376811594202 [2021-11-13 18:27:44,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2021-11-13 18:27:44,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2021-11-13 18:27:44,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:44,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2021-11-13 18:27:44,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 18:27:44,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 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 18:27:44,682 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 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 18:27:44,682 INFO L186 Difference]: Start difference. First operand has 118 places, 113 transitions, 232 flow. Second operand 3 states and 319 transitions. [2021-11-13 18:27:44,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 112 transitions, 254 flow [2021-11-13 18:27:44,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 112 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-13 18:27:44,688 INFO L242 Difference]: Finished difference. Result has 117 places, 112 transitions, 230 flow [2021-11-13 18:27:44,689 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=115, 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=230, PETRI_PLACES=117, PETRI_TRANSITIONS=112} [2021-11-13 18:27:44,690 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2021-11-13 18:27:44,690 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 112 transitions, 230 flow [2021-11-13 18:27:44,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 18:27:44,691 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:44,691 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] [2021-11-13 18:27:44,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:27:44,692 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:44,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:44,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1429971418, now seen corresponding path program 1 times [2021-11-13 18:27:44,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:44,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391544778] [2021-11-13 18:27:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:44,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:44,807 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 18:27:44,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:44,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391544778] [2021-11-13 18:27:44,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391544778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:44,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:44,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:27:44,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12258388] [2021-11-13 18:27:44,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:44,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:27:44,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:44,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:27:44,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:44,812 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 115 [2021-11-13 18:27:44,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 18:27:44,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:44,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 115 [2021-11-13 18:27:44,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:44,871 INFO L129 PetriNetUnfolder]: 0/110 cut-off events. [2021-11-13 18:27:44,872 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-13 18:27:44,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 110 events. 0/110 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-11-13 18:27:44,873 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 6 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2021-11-13 18:27:44,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 110 transitions, 240 flow [2021-11-13 18:27:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:27:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:27:44,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2021-11-13 18:27:44,876 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9391304347826087 [2021-11-13 18:27:44,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2021-11-13 18:27:44,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2021-11-13 18:27:44,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:44,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2021-11-13 18:27:44,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 18:27:44,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 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 18:27:44,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 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 18:27:44,880 INFO L186 Difference]: Start difference. First operand has 117 places, 112 transitions, 230 flow. Second operand 3 states and 324 transitions. [2021-11-13 18:27:44,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 110 transitions, 240 flow [2021-11-13 18:27:44,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 110 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-13 18:27:44,885 INFO L242 Difference]: Finished difference. Result has 115 places, 110 transitions, 224 flow [2021-11-13 18:27:44,886 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=115, PETRI_TRANSITIONS=110} [2021-11-13 18:27:44,887 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2021-11-13 18:27:44,887 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 110 transitions, 224 flow [2021-11-13 18:27:44,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 18:27:44,888 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:44,888 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] [2021-11-13 18:27:44,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:27:44,889 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:44,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:44,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1715619923, now seen corresponding path program 1 times [2021-11-13 18:27:44,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:44,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432511068] [2021-11-13 18:27:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:44,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:44,947 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 18:27:44,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:44,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432511068] [2021-11-13 18:27:44,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432511068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:44,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:44,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:27:44,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048966039] [2021-11-13 18:27:44,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:44,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:27:44,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:44,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:27:44,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:44,951 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 115 [2021-11-13 18:27:44,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 110 transitions, 224 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 18:27:44,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:44,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 115 [2021-11-13 18:27:44,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:45,026 INFO L129 PetriNetUnfolder]: 4/187 cut-off events. [2021-11-13 18:27:45,026 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:27:45,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 187 events. 4/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 482 event pairs, 2 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 159. Up to 12 conditions per place. [2021-11-13 18:27:45,029 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 7 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2021-11-13 18:27:45,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 110 transitions, 242 flow [2021-11-13 18:27:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:27:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:27:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2021-11-13 18:27:45,031 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9449275362318841 [2021-11-13 18:27:45,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2021-11-13 18:27:45,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2021-11-13 18:27:45,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:45,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2021-11-13 18:27:45,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 18:27:45,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 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 18:27:45,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 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 18:27:45,036 INFO L186 Difference]: Start difference. First operand has 115 places, 110 transitions, 224 flow. Second operand 3 states and 326 transitions. [2021-11-13 18:27:45,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 110 transitions, 242 flow [2021-11-13 18:27:45,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 110 transitions, 241 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-13 18:27:45,041 INFO L242 Difference]: Finished difference. Result has 115 places, 110 transitions, 233 flow [2021-11-13 18:27:45,042 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=115, PETRI_TRANSITIONS=110} [2021-11-13 18:27:45,043 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2021-11-13 18:27:45,043 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 110 transitions, 233 flow [2021-11-13 18:27:45,044 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 18:27:45,044 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:45,044 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 18:27:45,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:27:45,045 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:45,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:45,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1010089467, now seen corresponding path program 1 times [2021-11-13 18:27:45,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:45,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732545455] [2021-11-13 18:27:45,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:45,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:45,236 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 18:27:45,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:45,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732545455] [2021-11-13 18:27:45,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732545455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:45,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:45,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:27:45,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705995445] [2021-11-13 18:27:45,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:45,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:45,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:45,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:45,242 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 115 [2021-11-13 18:27:45,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 110 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 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 18:27:45,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:45,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 115 [2021-11-13 18:27:45,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:45,720 INFO L129 PetriNetUnfolder]: 290/918 cut-off events. [2021-11-13 18:27:45,721 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:27:45,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1558 conditions, 918 events. 290/918 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4997 event pairs, 130 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 1509. Up to 437 conditions per place. [2021-11-13 18:27:45,736 INFO L132 encePairwiseOnDemand]: 99/115 looper letters, 62 selfloop transitions, 41 changer transitions 0/182 dead transitions. [2021-11-13 18:27:45,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 182 transitions, 583 flow [2021-11-13 18:27:45,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:27:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 18:27:45,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 608 transitions. [2021-11-13 18:27:45,740 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.881159420289855 [2021-11-13 18:27:45,741 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 608 transitions. [2021-11-13 18:27:45,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 608 transitions. [2021-11-13 18:27:45,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:45,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 608 transitions. [2021-11-13 18:27:45,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.33333333333333) internal successors, (608), 6 states have internal predecessors, (608), 0 states have call successors, (0), 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 18:27:45,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 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 18:27:45,748 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 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 18:27:45,748 INFO L186 Difference]: Start difference. First operand has 115 places, 110 transitions, 233 flow. Second operand 6 states and 608 transitions. [2021-11-13 18:27:45,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 182 transitions, 583 flow [2021-11-13 18:27:45,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 182 transitions, 583 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-13 18:27:45,759 INFO L242 Difference]: Finished difference. Result has 124 places, 152 transitions, 491 flow [2021-11-13 18:27:45,759 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=491, PETRI_PLACES=124, PETRI_TRANSITIONS=152} [2021-11-13 18:27:45,763 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2021-11-13 18:27:45,763 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 152 transitions, 491 flow [2021-11-13 18:27:45,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 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 18:27:45,764 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:45,765 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 18:27:45,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:27:45,766 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:45,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:45,767 INFO L85 PathProgramCache]: Analyzing trace with hash 75175412, now seen corresponding path program 1 times [2021-11-13 18:27:45,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:45,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038765868] [2021-11-13 18:27:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:45,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:46,005 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 18:27:46,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:46,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038765868] [2021-11-13 18:27:46,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038765868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:46,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:46,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:27:46,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437728830] [2021-11-13 18:27:46,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:46,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:46,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:46,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:46,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:46,016 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 115 [2021-11-13 18:27:46,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 152 transitions, 491 flow. Second operand has 6 states, 6 states have (on average 87.5) internal successors, (525), 6 states have internal predecessors, (525), 0 states have call successors, (0), 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 18:27:46,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:46,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 115 [2021-11-13 18:27:46,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:46,737 INFO L129 PetriNetUnfolder]: 448/1421 cut-off events. [2021-11-13 18:27:46,738 INFO L130 PetriNetUnfolder]: For 382/396 co-relation queries the response was YES. [2021-11-13 18:27:46,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 1421 events. 448/1421 cut-off events. For 382/396 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9146 event pairs, 34 based on Foata normal form. 24/1362 useless extension candidates. Maximal degree in co-relation 3220. Up to 453 conditions per place. [2021-11-13 18:27:46,753 INFO L132 encePairwiseOnDemand]: 100/115 looper letters, 129 selfloop transitions, 48 changer transitions 0/262 dead transitions. [2021-11-13 18:27:46,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 262 transitions, 1240 flow [2021-11-13 18:27:46,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:27:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 18:27:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 638 transitions. [2021-11-13 18:27:46,757 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9246376811594202 [2021-11-13 18:27:46,757 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 638 transitions. [2021-11-13 18:27:46,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 638 transitions. [2021-11-13 18:27:46,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:46,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 638 transitions. [2021-11-13 18:27:46,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.33333333333333) internal successors, (638), 6 states have internal predecessors, (638), 0 states have call successors, (0), 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 18:27:46,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 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 18:27:46,764 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 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 18:27:46,764 INFO L186 Difference]: Start difference. First operand has 124 places, 152 transitions, 491 flow. Second operand 6 states and 638 transitions. [2021-11-13 18:27:46,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 262 transitions, 1240 flow [2021-11-13 18:27:46,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 262 transitions, 1240 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-13 18:27:46,779 INFO L242 Difference]: Finished difference. Result has 134 places, 198 transitions, 897 flow [2021-11-13 18:27:46,780 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=897, PETRI_PLACES=134, PETRI_TRANSITIONS=198} [2021-11-13 18:27:46,781 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 16 predicate places. [2021-11-13 18:27:46,781 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 198 transitions, 897 flow [2021-11-13 18:27:46,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.5) internal successors, (525), 6 states have internal predecessors, (525), 0 states have call successors, (0), 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 18:27:46,781 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:46,782 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] [2021-11-13 18:27:46,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:27:46,782 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:46,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash -758238230, now seen corresponding path program 1 times [2021-11-13 18:27:46,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:46,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260341899] [2021-11-13 18:27:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:46,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:27:46,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:46,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260341899] [2021-11-13 18:27:46,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260341899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:46,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:46,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:27:46,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358535414] [2021-11-13 18:27:46,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:46,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:27:46,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:46,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:27:46,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:46,896 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 115 [2021-11-13 18:27:46,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 198 transitions, 897 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 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 18:27:46,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:46,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 115 [2021-11-13 18:27:46,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:46,979 INFO L129 PetriNetUnfolder]: 39/301 cut-off events. [2021-11-13 18:27:46,979 INFO L130 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2021-11-13 18:27:46,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 301 events. 39/301 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 998 event pairs, 4 based on Foata normal form. 2/289 useless extension candidates. Maximal degree in co-relation 501. Up to 64 conditions per place. [2021-11-13 18:27:46,982 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 7 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2021-11-13 18:27:46,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 131 transitions, 445 flow [2021-11-13 18:27:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:27:46,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:27:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2021-11-13 18:27:46,984 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9420289855072463 [2021-11-13 18:27:46,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2021-11-13 18:27:46,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2021-11-13 18:27:46,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:46,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2021-11-13 18:27:46,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 18:27:46,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 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 18:27:46,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 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 18:27:46,988 INFO L186 Difference]: Start difference. First operand has 134 places, 198 transitions, 897 flow. Second operand 3 states and 325 transitions. [2021-11-13 18:27:46,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 131 transitions, 445 flow [2021-11-13 18:27:46,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 131 transitions, 395 flow, removed 17 selfloop flow, removed 8 redundant places. [2021-11-13 18:27:46,998 INFO L242 Difference]: Finished difference. Result has 127 places, 131 transitions, 381 flow [2021-11-13 18:27:46,999 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=381, PETRI_PLACES=127, PETRI_TRANSITIONS=131} [2021-11-13 18:27:47,000 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 9 predicate places. [2021-11-13 18:27:47,001 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 131 transitions, 381 flow [2021-11-13 18:27:47,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 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 18:27:47,001 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:47,001 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] [2021-11-13 18:27:47,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:27:47,002 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:47,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:47,002 INFO L85 PathProgramCache]: Analyzing trace with hash 34445642, now seen corresponding path program 1 times [2021-11-13 18:27:47,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:47,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355562087] [2021-11-13 18:27:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:47,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:47,147 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 18:27:47,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:47,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355562087] [2021-11-13 18:27:47,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355562087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:47,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:47,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:27:47,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993162567] [2021-11-13 18:27:47,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:47,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:47,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:47,152 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 115 [2021-11-13 18:27:47,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 131 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 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 18:27:47,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:47,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 115 [2021-11-13 18:27:47,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:47,656 INFO L129 PetriNetUnfolder]: 157/673 cut-off events. [2021-11-13 18:27:47,657 INFO L130 PetriNetUnfolder]: For 144/168 co-relation queries the response was YES. [2021-11-13 18:27:47,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 673 events. 157/673 cut-off events. For 144/168 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3512 event pairs, 22 based on Foata normal form. 0/639 useless extension candidates. Maximal degree in co-relation 1334. Up to 262 conditions per place. [2021-11-13 18:27:47,663 INFO L132 encePairwiseOnDemand]: 101/115 looper letters, 57 selfloop transitions, 47 changer transitions 5/190 dead transitions. [2021-11-13 18:27:47,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 190 transitions, 808 flow [2021-11-13 18:27:47,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:27:47,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 18:27:47,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 597 transitions. [2021-11-13 18:27:47,667 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8652173913043478 [2021-11-13 18:27:47,667 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 597 transitions. [2021-11-13 18:27:47,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 597 transitions. [2021-11-13 18:27:47,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:47,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 597 transitions. [2021-11-13 18:27:47,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 0 states have call successors, (0), 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 18:27:47,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 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 18:27:47,675 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 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 18:27:47,675 INFO L186 Difference]: Start difference. First operand has 127 places, 131 transitions, 381 flow. Second operand 6 states and 597 transitions. [2021-11-13 18:27:47,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 190 transitions, 808 flow [2021-11-13 18:27:47,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 190 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-13 18:27:47,684 INFO L242 Difference]: Finished difference. Result has 136 places, 172 transitions, 754 flow [2021-11-13 18:27:47,685 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=754, PETRI_PLACES=136, PETRI_TRANSITIONS=172} [2021-11-13 18:27:47,688 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 18 predicate places. [2021-11-13 18:27:47,689 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 172 transitions, 754 flow [2021-11-13 18:27:47,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 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 18:27:47,690 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:47,690 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] [2021-11-13 18:27:47,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:27:47,691 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:47,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:47,691 INFO L85 PathProgramCache]: Analyzing trace with hash -533347327, now seen corresponding path program 1 times [2021-11-13 18:27:47,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:47,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010448113] [2021-11-13 18:27:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:47,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:47,878 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 18:27:47,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:47,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010448113] [2021-11-13 18:27:47,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010448113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:47,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:47,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:27:47,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967994072] [2021-11-13 18:27:47,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:47,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:27:47,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:47,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:27:47,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:27:47,884 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 115 [2021-11-13 18:27:47,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 172 transitions, 754 flow. Second operand has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 0 states have call successors, (0), 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 18:27:47,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:47,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 115 [2021-11-13 18:27:47,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:48,279 INFO L129 PetriNetUnfolder]: 202/779 cut-off events. [2021-11-13 18:27:48,279 INFO L130 PetriNetUnfolder]: For 550/606 co-relation queries the response was YES. [2021-11-13 18:27:48,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 779 events. 202/779 cut-off events. For 550/606 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4183 event pairs, 29 based on Foata normal form. 0/766 useless extension candidates. Maximal degree in co-relation 2033. Up to 401 conditions per place. [2021-11-13 18:27:48,288 INFO L132 encePairwiseOnDemand]: 104/115 looper letters, 88 selfloop transitions, 26 changer transitions 16/208 dead transitions. [2021-11-13 18:27:48,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 208 transitions, 1218 flow [2021-11-13 18:27:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:27:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 18:27:48,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2021-11-13 18:27:48,292 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8173913043478261 [2021-11-13 18:27:48,292 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2021-11-13 18:27:48,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2021-11-13 18:27:48,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:48,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2021-11-13 18:27:48,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 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 18:27:48,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 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 18:27:48,298 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 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 18:27:48,299 INFO L186 Difference]: Start difference. First operand has 136 places, 172 transitions, 754 flow. Second operand 6 states and 564 transitions. [2021-11-13 18:27:48,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 208 transitions, 1218 flow [2021-11-13 18:27:48,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 208 transitions, 1200 flow, removed 9 selfloop flow, removed 0 redundant places. [2021-11-13 18:27:48,319 INFO L242 Difference]: Finished difference. Result has 146 places, 188 transitions, 950 flow [2021-11-13 18:27:48,320 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=950, PETRI_PLACES=146, PETRI_TRANSITIONS=188} [2021-11-13 18:27:48,321 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 28 predicate places. [2021-11-13 18:27:48,321 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 188 transitions, 950 flow [2021-11-13 18:27:48,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 0 states have call successors, (0), 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 18:27:48,322 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:48,322 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] [2021-11-13 18:27:48,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:27:48,323 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:48,324 INFO L85 PathProgramCache]: Analyzing trace with hash 661791856, now seen corresponding path program 1 times [2021-11-13 18:27:48,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:48,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773595843] [2021-11-13 18:27:48,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:48,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:48,689 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 18:27:48,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:48,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773595843] [2021-11-13 18:27:48,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773595843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:48,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:48,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 18:27:48,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773989566] [2021-11-13 18:27:48,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:48,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:27:48,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:48,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:27:48,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:27:48,703 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 115 [2021-11-13 18:27:48,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 188 transitions, 950 flow. Second operand has 12 states, 12 states have (on average 69.66666666666667) internal successors, (836), 12 states have internal predecessors, (836), 0 states have call successors, (0), 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 18:27:48,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:48,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 115 [2021-11-13 18:27:48,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:49,572 INFO L129 PetriNetUnfolder]: 234/900 cut-off events. [2021-11-13 18:27:49,572 INFO L130 PetriNetUnfolder]: For 785/791 co-relation queries the response was YES. [2021-11-13 18:27:49,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 900 events. 234/900 cut-off events. For 785/791 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5304 event pairs, 35 based on Foata normal form. 13/903 useless extension candidates. Maximal degree in co-relation 2545. Up to 292 conditions per place. [2021-11-13 18:27:49,583 INFO L132 encePairwiseOnDemand]: 101/115 looper letters, 130 selfloop transitions, 33 changer transitions 35/259 dead transitions. [2021-11-13 18:27:49,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 259 transitions, 1809 flow [2021-11-13 18:27:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 18:27:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-13 18:27:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1301 transitions. [2021-11-13 18:27:49,591 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6285024154589371 [2021-11-13 18:27:49,591 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1301 transitions. [2021-11-13 18:27:49,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1301 transitions. [2021-11-13 18:27:49,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:49,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1301 transitions. [2021-11-13 18:27:49,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 72.27777777777777) internal successors, (1301), 18 states have internal predecessors, (1301), 0 states have call successors, (0), 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 18:27:49,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 115.0) internal successors, (2185), 19 states have internal predecessors, (2185), 0 states have call successors, (0), 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 18:27:49,607 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 115.0) internal successors, (2185), 19 states have internal predecessors, (2185), 0 states have call successors, (0), 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 18:27:49,608 INFO L186 Difference]: Start difference. First operand has 146 places, 188 transitions, 950 flow. Second operand 18 states and 1301 transitions. [2021-11-13 18:27:49,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 259 transitions, 1809 flow [2021-11-13 18:27:49,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 259 transitions, 1731 flow, removed 25 selfloop flow, removed 4 redundant places. [2021-11-13 18:27:49,630 INFO L242 Difference]: Finished difference. Result has 158 places, 187 transitions, 939 flow [2021-11-13 18:27:49,631 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=939, PETRI_PLACES=158, PETRI_TRANSITIONS=187} [2021-11-13 18:27:49,632 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 40 predicate places. [2021-11-13 18:27:49,632 INFO L470 AbstractCegarLoop]: Abstraction has has 158 places, 187 transitions, 939 flow [2021-11-13 18:27:49,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.66666666666667) internal successors, (836), 12 states have internal predecessors, (836), 0 states have call successors, (0), 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 18:27:49,633 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:49,634 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] [2021-11-13 18:27:49,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:27:49,634 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:49,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:49,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1313476244, now seen corresponding path program 1 times [2021-11-13 18:27:49,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:49,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224700794] [2021-11-13 18:27:49,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:49,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:49,936 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 18:27:49,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:27:49,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224700794] [2021-11-13 18:27:49,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224700794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:49,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:49,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 18:27:49,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537665929] [2021-11-13 18:27:49,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:49,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:27:49,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:27:49,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:27:49,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:27:49,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 115 [2021-11-13 18:27:49,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 187 transitions, 939 flow. Second operand has 12 states, 12 states have (on average 71.58333333333333) internal successors, (859), 12 states have internal predecessors, (859), 0 states have call successors, (0), 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 18:27:49,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:49,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 115 [2021-11-13 18:27:49,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:50,774 INFO L129 PetriNetUnfolder]: 195/713 cut-off events. [2021-11-13 18:27:50,775 INFO L130 PetriNetUnfolder]: For 695/706 co-relation queries the response was YES. [2021-11-13 18:27:50,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2297 conditions, 713 events. 195/713 cut-off events. For 695/706 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3652 event pairs, 19 based on Foata normal form. 15/727 useless extension candidates. Maximal degree in co-relation 2214. Up to 167 conditions per place. [2021-11-13 18:27:50,785 INFO L132 encePairwiseOnDemand]: 97/115 looper letters, 115 selfloop transitions, 63 changer transitions 16/258 dead transitions. [2021-11-13 18:27:50,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 258 transitions, 1771 flow [2021-11-13 18:27:50,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:27:50,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-13 18:27:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1150 transitions. [2021-11-13 18:27:50,791 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2021-11-13 18:27:50,792 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1150 transitions. [2021-11-13 18:27:50,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1150 transitions. [2021-11-13 18:27:50,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:50,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1150 transitions. [2021-11-13 18:27:50,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.66666666666667) internal successors, (1150), 15 states have internal predecessors, (1150), 0 states have call successors, (0), 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 18:27:50,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 115.0) internal successors, (1840), 16 states have internal predecessors, (1840), 0 states have call successors, (0), 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 18:27:50,805 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 115.0) internal successors, (1840), 16 states have internal predecessors, (1840), 0 states have call successors, (0), 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 18:27:50,805 INFO L186 Difference]: Start difference. First operand has 158 places, 187 transitions, 939 flow. Second operand 15 states and 1150 transitions. [2021-11-13 18:27:50,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 258 transitions, 1771 flow [2021-11-13 18:27:50,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 258 transitions, 1675 flow, removed 0 selfloop flow, removed 11 redundant places. [2021-11-13 18:27:50,828 INFO L242 Difference]: Finished difference. Result has 162 places, 199 transitions, 1216 flow [2021-11-13 18:27:50,828 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1216, PETRI_PLACES=162, PETRI_TRANSITIONS=199} [2021-11-13 18:27:50,829 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 44 predicate places. [2021-11-13 18:27:50,829 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 199 transitions, 1216 flow [2021-11-13 18:27:50,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 71.58333333333333) internal successors, (859), 12 states have internal predecessors, (859), 0 states have call successors, (0), 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 18:27:50,830 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:50,831 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] [2021-11-13 18:27:50,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:27:50,831 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:50,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:50,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1161366886, now seen corresponding path program 1 times [2021-11-13 18:27:50,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:27:50,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406558580] [2021-11-13 18:27:50,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:50,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:27:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:27:50,893 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:27:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:27:50,988 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:27:50,989 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:27:50,990 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (14 of 15 remaining) [2021-11-13 18:27:50,992 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2021-11-13 18:27:50,993 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2021-11-13 18:27:50,993 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2021-11-13 18:27:50,993 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2021-11-13 18:27:50,993 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2021-11-13 18:27:50,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (8 of 15 remaining) [2021-11-13 18:27:50,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2021-11-13 18:27:50,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2021-11-13 18:27:50,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2021-11-13 18:27:50,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2021-11-13 18:27:50,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2021-11-13 18:27:50,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2021-11-13 18:27:50,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2021-11-13 18:27:50,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2021-11-13 18:27:50,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:27:51,001 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:27:51,011 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 18:27:51,011 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:27:51,082 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.DataRaceFoundResult.getLongDescription(DataRaceFoundResult.java:136) 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 18:27:51,086 INFO L158 Benchmark]: Toolchain (without parser) took 9415.21ms. Allocated memory was 88.1MB in the beginning and 205.5MB in the end (delta: 117.4MB). Free memory was 48.6MB in the beginning and 113.4MB in the end (delta: -64.8MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2021-11-13 18:27:51,087 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 88.1MB. Free memory was 67.5MB in the beginning and 67.5MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:27:51,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1050.52ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 48.4MB in the beginning and 79.3MB in the end (delta: -30.9MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2021-11-13 18:27:51,088 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.87ms. Allocated memory is still 130.0MB. Free memory was 79.3MB in the beginning and 76.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:27:51,088 INFO L158 Benchmark]: Boogie Preprocessor took 43.77ms. Allocated memory is still 130.0MB. Free memory was 76.7MB in the beginning and 75.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:27:51,089 INFO L158 Benchmark]: RCFGBuilder took 638.61ms. Allocated memory is still 130.0MB. Free memory was 75.1MB in the beginning and 60.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 18:27:51,090 INFO L158 Benchmark]: TraceAbstraction took 7598.70ms. Allocated memory was 130.0MB in the beginning and 205.5MB in the end (delta: 75.5MB). Free memory was 60.0MB in the beginning and 113.4MB in the end (delta: -53.4MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2021-11-13 18:27:51,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 88.1MB. Free memory was 67.5MB in the beginning and 67.5MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1050.52ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 48.4MB in the beginning and 79.3MB in the end (delta: -30.9MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.87ms. Allocated memory is still 130.0MB. Free memory was 79.3MB in the beginning and 76.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.77ms. Allocated memory is still 130.0MB. Free memory was 76.7MB in the beginning and 75.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 638.61ms. Allocated memory is still 130.0MB. Free memory was 75.1MB in the beginning and 60.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7598.70ms. Allocated memory was 130.0MB in the beginning and 205.5MB in the end (delta: 75.5MB). Free memory was 60.0MB in the beginning and 113.4MB in the end (delta: -53.4MB). Peak memory consumption was 22.9MB. 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 18:27:51,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/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_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/02-base_25-malloc_race_cp.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1bf1a57452cb04c4e0acc7059a368e9894233cf719b7dca68f11bd8477a0c6ed --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:27:54,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:27:54,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:27:54,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:27:54,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:27:54,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:27:54,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:27:54,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:27:54,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:27:54,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:27:54,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:27:54,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:27:54,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:27:54,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:27:54,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:27:54,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:27:54,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:27:54,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:27:54,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:27:54,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:27:54,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:27:54,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:27:54,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:27:54,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:27:54,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:27:54,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:27:54,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:27:54,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:27:54,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:27:54,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:27:54,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:27:54,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:27:54,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:27:54,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:27:54,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:27:54,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:27:54,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:27:54,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:27:54,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:27:54,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:27:54,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:27:54,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf [2021-11-13 18:27:54,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:27:54,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:27:54,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:27:54,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:27:54,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:27:54,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:27:54,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:27:54,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:27:54,187 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:27:54,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:27:54,187 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:27:54,188 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:27:54,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:27:54,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:27:54,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:27:54,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:27:54,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:27:54,189 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-11-13 18:27:54,190 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:27:54,190 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:27:54,190 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:27:54,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:27:54,191 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:27:54,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:27:54,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:27:54,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:27:54,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:27:54,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:27:54,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:27:54,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:27:54,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:27:54,194 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:27:54,194 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:27:54,194 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:27:54,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:27:54,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:27:54,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:27:54,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:27:54,196 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_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bf1a57452cb04c4e0acc7059a368e9894233cf719b7dca68f11bd8477a0c6ed [2021-11-13 18:27:54,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:27:54,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:27:54,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:27:54,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:27:54,678 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:27:54,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/goblint-regression/02-base_25-malloc_race_cp.i [2021-11-13 18:27:54,771 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/data/16ea161f4/d4a9087f2bf744e084b4a21aa1eb449a/FLAGd06addded [2021-11-13 18:27:55,561 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:27:55,562 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/sv-benchmarks/c/goblint-regression/02-base_25-malloc_race_cp.i [2021-11-13 18:27:55,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/data/16ea161f4/d4a9087f2bf744e084b4a21aa1eb449a/FLAGd06addded [2021-11-13 18:27:55,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/data/16ea161f4/d4a9087f2bf744e084b4a21aa1eb449a [2021-11-13 18:27:55,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:27:55,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:27:55,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:27:55,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:27:55,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:27:55,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:27:55" (1/1) ... [2021-11-13 18:27:55,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68540d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:55, skipping insertion in model container [2021-11-13 18:27:55,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:27:55" (1/1) ... [2021-11-13 18:27:55,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:27:55,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:27:56,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:27:56,555 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:27:56,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:27:56,753 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:27:56,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:56 WrapperNode [2021-11-13 18:27:56,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:27:56,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:27:56,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:27:56,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:27:56,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:56" (1/1) ... [2021-11-13 18:27:56,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:56" (1/1) ... [2021-11-13 18:27:56,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:27:56,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:27:56,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:27:56,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:27:56,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:56" (1/1) ... [2021-11-13 18:27:56,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:56" (1/1) ... [2021-11-13 18:27:56,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:56" (1/1) ... [2021-11-13 18:27:56,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:56" (1/1) ... [2021-11-13 18:27:56,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:56" (1/1) ... [2021-11-13 18:27:56,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:56" (1/1) ... [2021-11-13 18:27:56,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:56" (1/1) ... [2021-11-13 18:27:56,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:27:56,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:27:56,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:27:56,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:27:56,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:56" (1/1) ... [2021-11-13 18:27:56,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:27:56,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:27:56,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:27:56,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:27:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:27:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:27:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:27:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:27:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:27:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 18:27:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-13 18:27:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:27:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-13 18:27:56,986 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-13 18:27:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:27:56,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:27:56,988 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 18:27:57,675 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:27:57,675 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:27:57,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:27:57 BoogieIcfgContainer [2021-11-13 18:27:57,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:27:57,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:27:57,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:27:57,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:27:57,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:27:55" (1/3) ... [2021-11-13 18:27:57,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541bb7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:27:57, skipping insertion in model container [2021-11-13 18:27:57,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:56" (2/3) ... [2021-11-13 18:27:57,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541bb7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:27:57, skipping insertion in model container [2021-11-13 18:27:57,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:27:57" (3/3) ... [2021-11-13 18:27:57,688 INFO L111 eAbstractionObserver]: Analyzing ICFG 02-base_25-malloc_race_cp.i [2021-11-13 18:27:57,694 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 18:27:57,694 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:27:57,695 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-13 18:27:57,695 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 18:27:57,731 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,732 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,732 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,732 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,732 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,733 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,733 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,733 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,733 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,734 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,734 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,734 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,735 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,735 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,736 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,736 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,736 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,737 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,737 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,737 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,738 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,738 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,738 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,739 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,739 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,740 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,740 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,740 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,741 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,741 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,741 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,742 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,742 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,742 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,743 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,743 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,743 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,744 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,744 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,744 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,745 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,745 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,746 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,746 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,746 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,747 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,747 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,747 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,751 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,751 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,752 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,752 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,752 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,752 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,753 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 18:27:57,756 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-13 18:27:57,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:27:57,823 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 18:27:57,824 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-13 18:27:57,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 120 places, 116 transitions, 237 flow [2021-11-13 18:27:57,967 INFO L129 PetriNetUnfolder]: 0/115 cut-off events. [2021-11-13 18:27:57,968 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:27:57,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 115 events. 0/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-11-13 18:27:57,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 116 transitions, 237 flow [2021-11-13 18:27:57,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 115 transitions, 233 flow [2021-11-13 18:27:58,000 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-11-13 18:27:58,001 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:27:58,001 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:58,002 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] [2021-11-13 18:27:58,003 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:58,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:58,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1045803999, now seen corresponding path program 1 times [2021-11-13 18:27:58,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:58,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390900965] [2021-11-13 18:27:58,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:58,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:58,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:58,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:58,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:27:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:58,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:27:58,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:58,435 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 18:27:58,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:58,567 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 18:27:58,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:58,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390900965] [2021-11-13 18:27:58,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390900965] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:58,570 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:58,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:27:58,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672538191] [2021-11-13 18:27:58,574 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:58,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:27:58,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:58,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:27:58,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:58,648 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 116 [2021-11-13 18:27:58,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 115 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 18:27:58,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:58,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 116 [2021-11-13 18:27:58,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:58,813 INFO L129 PetriNetUnfolder]: 9/228 cut-off events. [2021-11-13 18:27:58,813 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-13 18:27:58,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 228 events. 9/228 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 719 event pairs, 9 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 200. Up to 29 conditions per place. [2021-11-13 18:27:58,824 INFO L132 encePairwiseOnDemand]: 113/116 looper letters, 10 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2021-11-13 18:27:58,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 114 transitions, 255 flow [2021-11-13 18:27:58,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:27:58,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:27:58,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2021-11-13 18:27:58,844 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9252873563218391 [2021-11-13 18:27:58,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2021-11-13 18:27:58,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2021-11-13 18:27:58,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:58,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2021-11-13 18:27:58,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 18:27:58,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 18:27:58,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 18:27:58,868 INFO L186 Difference]: Start difference. First operand has 119 places, 115 transitions, 233 flow. Second operand 3 states and 322 transitions. [2021-11-13 18:27:58,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 114 transitions, 255 flow [2021-11-13 18:27:58,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 114 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-13 18:27:58,879 INFO L242 Difference]: Finished difference. Result has 119 places, 114 transitions, 234 flow [2021-11-13 18:27:58,882 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=119, PETRI_TRANSITIONS=114} [2021-11-13 18:27:58,887 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 0 predicate places. [2021-11-13 18:27:58,888 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 114 transitions, 234 flow [2021-11-13 18:27:58,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 18:27:58,889 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:58,889 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] [2021-11-13 18:27:58,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:59,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:59,106 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:59,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:59,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1369505471, now seen corresponding path program 1 times [2021-11-13 18:27:59,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:59,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576220259] [2021-11-13 18:27:59,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:59,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:59,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:59,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:59,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:27:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:59,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:27:59,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:59,347 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 18:27:59,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:27:59,431 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 18:27:59,431 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:27:59,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576220259] [2021-11-13 18:27:59,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576220259] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:27:59,432 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:27:59,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:27:59,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139498585] [2021-11-13 18:27:59,433 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:27:59,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:27:59,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:27:59,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:27:59,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:27:59,438 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 116 [2021-11-13 18:27:59,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 114 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 18:27:59,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:27:59,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 116 [2021-11-13 18:27:59,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:27:59,480 INFO L129 PetriNetUnfolder]: 0/113 cut-off events. [2021-11-13 18:27:59,481 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:27:59,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 113 events. 0/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-11-13 18:27:59,482 INFO L132 encePairwiseOnDemand]: 113/116 looper letters, 10 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2021-11-13 18:27:59,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 256 flow [2021-11-13 18:27:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:27:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:27:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2021-11-13 18:27:59,486 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9252873563218391 [2021-11-13 18:27:59,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2021-11-13 18:27:59,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2021-11-13 18:27:59,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:27:59,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2021-11-13 18:27:59,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 18:27:59,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 18:27:59,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 18:27:59,493 INFO L186 Difference]: Start difference. First operand has 119 places, 114 transitions, 234 flow. Second operand 3 states and 322 transitions. [2021-11-13 18:27:59,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 256 flow [2021-11-13 18:27:59,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 113 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-13 18:27:59,499 INFO L242 Difference]: Finished difference. Result has 118 places, 113 transitions, 232 flow [2021-11-13 18:27:59,500 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=118, PETRI_TRANSITIONS=113} [2021-11-13 18:27:59,501 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -1 predicate places. [2021-11-13 18:27:59,501 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 113 transitions, 232 flow [2021-11-13 18:27:59,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 18:27:59,502 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:27:59,502 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] [2021-11-13 18:27:59,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:27:59,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:27:59,715 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:27:59,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:27:59,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2014933984, now seen corresponding path program 1 times [2021-11-13 18:27:59,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:27:59,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118689030] [2021-11-13 18:27:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:27:59,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:27:59,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:27:59,719 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:27:59,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:27:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:27:59,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:27:59,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:27:59,938 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 18:27:59,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:00,026 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 18:28:00,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:00,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118689030] [2021-11-13 18:28:00,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118689030] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:00,027 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:00,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:28:00,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893583111] [2021-11-13 18:28:00,028 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:00,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:28:00,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:00,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:28:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:28:00,031 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 116 [2021-11-13 18:28:00,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 113 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 18:28:00,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:28:00,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 116 [2021-11-13 18:28:00,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:28:00,066 INFO L129 PetriNetUnfolder]: 0/111 cut-off events. [2021-11-13 18:28:00,066 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-13 18:28:00,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 111 events. 0/111 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-11-13 18:28:00,067 INFO L132 encePairwiseOnDemand]: 113/116 looper letters, 6 selfloop transitions, 1 changer transitions 0/111 dead transitions. [2021-11-13 18:28:00,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 111 transitions, 242 flow [2021-11-13 18:28:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:28:00,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:28:00,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2021-11-13 18:28:00,070 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9396551724137931 [2021-11-13 18:28:00,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2021-11-13 18:28:00,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2021-11-13 18:28:00,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:28:00,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2021-11-13 18:28:00,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 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 18:28:00,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 18:28:00,076 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 18:28:00,076 INFO L186 Difference]: Start difference. First operand has 118 places, 113 transitions, 232 flow. Second operand 3 states and 327 transitions. [2021-11-13 18:28:00,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 111 transitions, 242 flow [2021-11-13 18:28:00,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 111 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-13 18:28:00,081 INFO L242 Difference]: Finished difference. Result has 116 places, 111 transitions, 226 flow [2021-11-13 18:28:00,082 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=116, PETRI_TRANSITIONS=111} [2021-11-13 18:28:00,083 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -3 predicate places. [2021-11-13 18:28:00,083 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 111 transitions, 226 flow [2021-11-13 18:28:00,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 18:28:00,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:28:00,085 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] [2021-11-13 18:28:00,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:00,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:00,301 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:28:00,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:00,301 INFO L85 PathProgramCache]: Analyzing trace with hash -594873255, now seen corresponding path program 1 times [2021-11-13 18:28:00,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:00,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40494358] [2021-11-13 18:28:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:00,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:00,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:00,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:00,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:28:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:00,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:28:00,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:00,592 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 18:28:00,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:00,704 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 18:28:00,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:00,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40494358] [2021-11-13 18:28:00,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40494358] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:00,706 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:00,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:28:00,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002581751] [2021-11-13 18:28:00,707 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:00,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:28:00,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:00,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:28:00,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:28:00,713 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 116 [2021-11-13 18:28:00,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 111 transitions, 226 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 18:28:00,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:28:00,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 116 [2021-11-13 18:28:00,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:28:00,779 INFO L129 PetriNetUnfolder]: 4/188 cut-off events. [2021-11-13 18:28:00,779 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:28:00,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 188 events. 4/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 479 event pairs, 2 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 159. Up to 12 conditions per place. [2021-11-13 18:28:00,782 INFO L132 encePairwiseOnDemand]: 112/116 looper letters, 7 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2021-11-13 18:28:00,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 111 transitions, 244 flow [2021-11-13 18:28:00,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:28:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:28:00,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2021-11-13 18:28:00,785 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9454022988505747 [2021-11-13 18:28:00,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2021-11-13 18:28:00,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2021-11-13 18:28:00,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:28:00,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2021-11-13 18:28:00,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 18:28:00,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 18:28:00,790 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 18:28:00,790 INFO L186 Difference]: Start difference. First operand has 116 places, 111 transitions, 226 flow. Second operand 3 states and 329 transitions. [2021-11-13 18:28:00,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 111 transitions, 244 flow [2021-11-13 18:28:00,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 111 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-13 18:28:00,796 INFO L242 Difference]: Finished difference. Result has 116 places, 111 transitions, 235 flow [2021-11-13 18:28:00,796 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=116, PETRI_TRANSITIONS=111} [2021-11-13 18:28:00,798 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, -3 predicate places. [2021-11-13 18:28:00,799 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 111 transitions, 235 flow [2021-11-13 18:28:00,799 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 18:28:00,799 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:28:00,800 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 18:28:00,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:01,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:01,016 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:28:01,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:01,016 INFO L85 PathProgramCache]: Analyzing trace with hash -877861257, now seen corresponding path program 1 times [2021-11-13 18:28:01,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:01,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814052145] [2021-11-13 18:28:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:01,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:01,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:01,022 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:01,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:28:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:01,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:28:01,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:01,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:28:01,437 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:28:01,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-13 18:28:01,603 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:28:01,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 60 [2021-11-13 18:28:01,835 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:28:01,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 91 [2021-11-13 18:28:02,006 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 18:28:02,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:02,359 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 18:28:02,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:02,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814052145] [2021-11-13 18:28:02,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814052145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:02,360 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:02,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 18:28:02,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971821216] [2021-11-13 18:28:02,360 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:02,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:28:02,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:02,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:28:02,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=33, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:28:02,365 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 116 [2021-11-13 18:28:02,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 111 transitions, 235 flow. Second operand has 9 states, 9 states have (on average 86.55555555555556) internal successors, (779), 9 states have internal predecessors, (779), 0 states have call successors, (0), 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 18:28:02,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:28:02,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 116 [2021-11-13 18:28:02,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:28:02,901 INFO L129 PetriNetUnfolder]: 254/830 cut-off events. [2021-11-13 18:28:02,904 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-13 18:28:02,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 830 events. 254/830 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4273 event pairs, 121 based on Foata normal form. 0/749 useless extension candidates. Maximal degree in co-relation 1347. Up to 461 conditions per place. [2021-11-13 18:28:02,919 INFO L132 encePairwiseOnDemand]: 96/116 looper letters, 37 selfloop transitions, 51 changer transitions 0/168 dead transitions. [2021-11-13 18:28:02,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 168 transitions, 525 flow [2021-11-13 18:28:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:28:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 18:28:02,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 599 transitions. [2021-11-13 18:28:02,924 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.860632183908046 [2021-11-13 18:28:02,924 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 599 transitions. [2021-11-13 18:28:02,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 599 transitions. [2021-11-13 18:28:02,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:28:02,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 599 transitions. [2021-11-13 18:28:02,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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 18:28:02,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 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 18:28:02,932 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 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 18:28:02,933 INFO L186 Difference]: Start difference. First operand has 116 places, 111 transitions, 235 flow. Second operand 6 states and 599 transitions. [2021-11-13 18:28:02,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 168 transitions, 525 flow [2021-11-13 18:28:02,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 168 transitions, 525 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-13 18:28:02,941 INFO L242 Difference]: Finished difference. Result has 126 places, 165 transitions, 593 flow [2021-11-13 18:28:02,942 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=593, PETRI_PLACES=126, PETRI_TRANSITIONS=165} [2021-11-13 18:28:02,947 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 7 predicate places. [2021-11-13 18:28:02,947 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 165 transitions, 593 flow [2021-11-13 18:28:02,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.55555555555556) internal successors, (779), 9 states have internal predecessors, (779), 0 states have call successors, (0), 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 18:28:02,949 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:28:02,950 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] [2021-11-13 18:28:02,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:03,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:03,166 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:28:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:03,167 INFO L85 PathProgramCache]: Analyzing trace with hash 790741402, now seen corresponding path program 1 times [2021-11-13 18:28:03,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:03,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542846990] [2021-11-13 18:28:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:03,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:03,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:03,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:03,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:28:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:03,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:28:03,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:03,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:28:03,507 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:28:03,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-11-13 18:28:03,625 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:28:03,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 47 [2021-11-13 18:28:03,791 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:28:03,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 72 [2021-11-13 18:28:03,916 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 18:28:03,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:04,215 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 18:28:04,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:04,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542846990] [2021-11-13 18:28:04,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542846990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:04,216 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:04,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 18:28:04,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997753748] [2021-11-13 18:28:04,217 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:04,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:28:04,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:04,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:28:04,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=33, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:28:04,225 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 116 [2021-11-13 18:28:04,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 165 transitions, 593 flow. Second operand has 9 states, 9 states have (on average 88.44444444444444) internal successors, (796), 9 states have internal predecessors, (796), 0 states have call successors, (0), 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 18:28:04,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:28:04,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 116 [2021-11-13 18:28:04,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:28:05,431 INFO L129 PetriNetUnfolder]: 431/1364 cut-off events. [2021-11-13 18:28:05,431 INFO L130 PetriNetUnfolder]: For 351/375 co-relation queries the response was YES. [2021-11-13 18:28:05,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 1364 events. 431/1364 cut-off events. For 351/375 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8626 event pairs, 22 based on Foata normal form. 4/1261 useless extension candidates. Maximal degree in co-relation 3219. Up to 482 conditions per place. [2021-11-13 18:28:05,447 INFO L132 encePairwiseOnDemand]: 101/116 looper letters, 139 selfloop transitions, 46 changer transitions 0/268 dead transitions. [2021-11-13 18:28:05,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 268 transitions, 1349 flow [2021-11-13 18:28:05,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:28:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 18:28:05,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 644 transitions. [2021-11-13 18:28:05,452 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9252873563218391 [2021-11-13 18:28:05,452 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 644 transitions. [2021-11-13 18:28:05,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 644 transitions. [2021-11-13 18:28:05,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:28:05,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 644 transitions. [2021-11-13 18:28:05,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 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 18:28:05,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 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 18:28:05,459 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 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 18:28:05,459 INFO L186 Difference]: Start difference. First operand has 126 places, 165 transitions, 593 flow. Second operand 6 states and 644 transitions. [2021-11-13 18:28:05,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 268 transitions, 1349 flow [2021-11-13 18:28:05,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 268 transitions, 1349 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-13 18:28:05,476 INFO L242 Difference]: Finished difference. Result has 136 places, 205 transitions, 961 flow [2021-11-13 18:28:05,476 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=961, PETRI_PLACES=136, PETRI_TRANSITIONS=205} [2021-11-13 18:28:05,477 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 17 predicate places. [2021-11-13 18:28:05,478 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 205 transitions, 961 flow [2021-11-13 18:28:05,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.44444444444444) internal successors, (796), 9 states have internal predecessors, (796), 0 states have call successors, (0), 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 18:28:05,479 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:28:05,479 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] [2021-11-13 18:28:05,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:05,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:05,694 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:28:05,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:05,695 INFO L85 PathProgramCache]: Analyzing trace with hash -248592294, now seen corresponding path program 1 times [2021-11-13 18:28:05,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:05,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131806775] [2021-11-13 18:28:05,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:05,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:05,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:05,698 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:05,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:28:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:05,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:28:05,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:06,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:28:06,099 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 18:28:06,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:06,259 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 18:28:06,259 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:06,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131806775] [2021-11-13 18:28:06,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131806775] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:06,260 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:06,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:28:06,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539414714] [2021-11-13 18:28:06,260 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:06,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:28:06,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:06,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:28:06,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:28:06,263 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 116 [2021-11-13 18:28:06,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 205 transitions, 961 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 18:28:06,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:28:06,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 116 [2021-11-13 18:28:06,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:28:06,356 INFO L129 PetriNetUnfolder]: 57/330 cut-off events. [2021-11-13 18:28:06,356 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2021-11-13 18:28:06,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 330 events. 57/330 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1118 event pairs, 6 based on Foata normal form. 2/314 useless extension candidates. Maximal degree in co-relation 609. Up to 88 conditions per place. [2021-11-13 18:28:06,359 INFO L132 encePairwiseOnDemand]: 112/116 looper letters, 7 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2021-11-13 18:28:06,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 140 transitions, 513 flow [2021-11-13 18:28:06,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:28:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-13 18:28:06,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2021-11-13 18:28:06,362 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9425287356321839 [2021-11-13 18:28:06,362 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2021-11-13 18:28:06,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2021-11-13 18:28:06,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:28:06,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2021-11-13 18:28:06,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 18:28:06,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 18:28:06,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 18:28:06,367 INFO L186 Difference]: Start difference. First operand has 136 places, 205 transitions, 961 flow. Second operand 3 states and 328 transitions. [2021-11-13 18:28:06,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 140 transitions, 513 flow [2021-11-13 18:28:06,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 140 transitions, 465 flow, removed 16 selfloop flow, removed 8 redundant places. [2021-11-13 18:28:06,375 INFO L242 Difference]: Finished difference. Result has 129 places, 140 transitions, 451 flow [2021-11-13 18:28:06,376 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=129, PETRI_TRANSITIONS=140} [2021-11-13 18:28:06,376 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 10 predicate places. [2021-11-13 18:28:06,377 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 140 transitions, 451 flow [2021-11-13 18:28:06,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 18:28:06,377 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:28:06,378 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] [2021-11-13 18:28:06,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:06,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:06,591 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:28:06,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:06,591 INFO L85 PathProgramCache]: Analyzing trace with hash -434898297, now seen corresponding path program 1 times [2021-11-13 18:28:06,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:06,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322500402] [2021-11-13 18:28:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:06,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:06,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:06,594 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:06,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:28:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:06,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:28:06,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:06,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:28:06,980 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:28:06,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 25 [2021-11-13 18:28:07,084 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:28:07,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 52 [2021-11-13 18:28:07,262 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:28:07,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 84 [2021-11-13 18:28:07,411 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 18:28:07,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:07,708 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 18:28:07,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:07,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322500402] [2021-11-13 18:28:07,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322500402] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:07,710 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:07,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 18:28:07,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618076041] [2021-11-13 18:28:07,710 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:07,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:28:07,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:07,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:28:07,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=33, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:28:07,714 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 116 [2021-11-13 18:28:07,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 140 transitions, 451 flow. Second operand has 9 states, 9 states have (on average 89.11111111111111) internal successors, (802), 9 states have internal predecessors, (802), 0 states have call successors, (0), 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 18:28:07,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:28:07,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 116 [2021-11-13 18:28:07,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:28:08,342 INFO L129 PetriNetUnfolder]: 156/647 cut-off events. [2021-11-13 18:28:08,343 INFO L130 PetriNetUnfolder]: For 143/167 co-relation queries the response was YES. [2021-11-13 18:28:08,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 647 events. 156/647 cut-off events. For 143/167 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3264 event pairs, 19 based on Foata normal form. 0/612 useless extension candidates. Maximal degree in co-relation 1368. Up to 256 conditions per place. [2021-11-13 18:28:08,350 INFO L132 encePairwiseOnDemand]: 102/116 looper letters, 62 selfloop transitions, 48 changer transitions 5/197 dead transitions. [2021-11-13 18:28:08,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 197 transitions, 889 flow [2021-11-13 18:28:08,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:28:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 18:28:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 603 transitions. [2021-11-13 18:28:08,355 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8663793103448276 [2021-11-13 18:28:08,355 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 603 transitions. [2021-11-13 18:28:08,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 603 transitions. [2021-11-13 18:28:08,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:28:08,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 603 transitions. [2021-11-13 18:28:08,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 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 18:28:08,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 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 18:28:08,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 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 18:28:08,362 INFO L186 Difference]: Start difference. First operand has 129 places, 140 transitions, 451 flow. Second operand 6 states and 603 transitions. [2021-11-13 18:28:08,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 197 transitions, 889 flow [2021-11-13 18:28:08,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 197 transitions, 885 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-13 18:28:08,372 INFO L242 Difference]: Finished difference. Result has 138 places, 179 transitions, 821 flow [2021-11-13 18:28:08,373 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=821, PETRI_PLACES=138, PETRI_TRANSITIONS=179} [2021-11-13 18:28:08,373 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 19 predicate places. [2021-11-13 18:28:08,374 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 179 transitions, 821 flow [2021-11-13 18:28:08,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 89.11111111111111) internal successors, (802), 9 states have internal predecessors, (802), 0 states have call successors, (0), 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 18:28:08,375 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:28:08,375 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] [2021-11-13 18:28:08,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:08,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:08,591 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:28:08,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:08,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1567366467, now seen corresponding path program 1 times [2021-11-13 18:28:08,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:08,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539330269] [2021-11-13 18:28:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:08,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:08,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:08,594 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:08,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:28:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:28:08,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:08,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:28:08,931 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:28:08,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-13 18:28:09,008 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:28:09,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 53 [2021-11-13 18:28:09,119 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:28:09,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 79 [2021-11-13 18:28:09,195 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 18:28:09,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:09,446 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 18:28:09,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:09,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539330269] [2021-11-13 18:28:09,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539330269] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:09,447 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:09,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 18:28:09,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974638971] [2021-11-13 18:28:09,448 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:09,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:28:09,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:09,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:28:09,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:28:09,451 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 116 [2021-11-13 18:28:09,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 179 transitions, 821 flow. Second operand has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 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 18:28:09,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:28:09,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 116 [2021-11-13 18:28:09,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:28:09,854 INFO L129 PetriNetUnfolder]: 201/753 cut-off events. [2021-11-13 18:28:09,854 INFO L130 PetriNetUnfolder]: For 604/644 co-relation queries the response was YES. [2021-11-13 18:28:09,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2117 conditions, 753 events. 201/753 cut-off events. For 604/644 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3912 event pairs, 26 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 2055. Up to 396 conditions per place. [2021-11-13 18:28:09,863 INFO L132 encePairwiseOnDemand]: 105/116 looper letters, 95 selfloop transitions, 26 changer transitions 15/215 dead transitions. [2021-11-13 18:28:09,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 215 transitions, 1315 flow [2021-11-13 18:28:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:28:09,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-13 18:28:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 570 transitions. [2021-11-13 18:28:09,868 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8189655172413793 [2021-11-13 18:28:09,868 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 570 transitions. [2021-11-13 18:28:09,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 570 transitions. [2021-11-13 18:28:09,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:28:09,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 570 transitions. [2021-11-13 18:28:09,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 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 18:28:09,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 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 18:28:09,874 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 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 18:28:09,875 INFO L186 Difference]: Start difference. First operand has 138 places, 179 transitions, 821 flow. Second operand 6 states and 570 transitions. [2021-11-13 18:28:09,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 215 transitions, 1315 flow [2021-11-13 18:28:09,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 215 transitions, 1291 flow, removed 12 selfloop flow, removed 0 redundant places. [2021-11-13 18:28:09,890 INFO L242 Difference]: Finished difference. Result has 148 places, 196 transitions, 1026 flow [2021-11-13 18:28:09,891 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1026, PETRI_PLACES=148, PETRI_TRANSITIONS=196} [2021-11-13 18:28:09,892 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 29 predicate places. [2021-11-13 18:28:09,892 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 196 transitions, 1026 flow [2021-11-13 18:28:09,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 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 18:28:09,893 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:28:09,893 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 18:28:09,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:10,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:10,110 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:28:10,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:10,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1087908811, now seen corresponding path program 1 times [2021-11-13 18:28:10,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:10,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364691525] [2021-11-13 18:28:10,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:10,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:10,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:10,113 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:10,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:28:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:28:10,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:10,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:28:10,382 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:28:10,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:28:10,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:28:10,592 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:28:10,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-11-13 18:28:10,724 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:28:10,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 48 [2021-11-13 18:28:11,489 INFO L354 Elim1Store]: treesize reduction 107, result has 24.6 percent of original size [2021-11-13 18:28:11,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 88 [2021-11-13 18:28:11,717 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:28:11,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 102 [2021-11-13 18:28:11,927 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 18:28:11,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:28,062 WARN L227 SmtUtils]: Spent 5.92s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:28:32,810 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 18:28:32,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:32,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364691525] [2021-11-13 18:28:32,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364691525] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:32,811 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:32,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 15 [2021-11-13 18:28:32,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237849149] [2021-11-13 18:28:32,812 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:32,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 18:28:32,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:32,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 18:28:32,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=182, Unknown=5, NotChecked=0, Total=240 [2021-11-13 18:28:32,816 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 116 [2021-11-13 18:28:32,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 196 transitions, 1026 flow. Second operand has 16 states, 16 states have (on average 72.3125) internal successors, (1157), 16 states have internal predecessors, (1157), 0 states have call successors, (0), 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 18:28:32,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:28:32,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 116 [2021-11-13 18:28:32,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:28:37,188 INFO L129 PetriNetUnfolder]: 260/884 cut-off events. [2021-11-13 18:28:37,188 INFO L130 PetriNetUnfolder]: For 1028/1040 co-relation queries the response was YES. [2021-11-13 18:28:37,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 884 events. 260/884 cut-off events. For 1028/1040 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4937 event pairs, 15 based on Foata normal form. 15/896 useless extension candidates. Maximal degree in co-relation 2829. Up to 262 conditions per place. [2021-11-13 18:28:37,201 INFO L132 encePairwiseOnDemand]: 89/116 looper letters, 106 selfloop transitions, 96 changer transitions 5/272 dead transitions. [2021-11-13 18:28:37,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 272 transitions, 1894 flow [2021-11-13 18:28:37,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:28:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-13 18:28:37,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1102 transitions. [2021-11-13 18:28:37,208 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2021-11-13 18:28:37,208 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1102 transitions. [2021-11-13 18:28:37,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1102 transitions. [2021-11-13 18:28:37,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:28:37,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1102 transitions. [2021-11-13 18:28:37,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 78.71428571428571) internal successors, (1102), 14 states have internal predecessors, (1102), 0 states have call successors, (0), 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 18:28:37,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 116.0) internal successors, (1740), 15 states have internal predecessors, (1740), 0 states have call successors, (0), 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 18:28:37,219 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 116.0) internal successors, (1740), 15 states have internal predecessors, (1740), 0 states have call successors, (0), 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 18:28:37,220 INFO L186 Difference]: Start difference. First operand has 148 places, 196 transitions, 1026 flow. Second operand 14 states and 1102 transitions. [2021-11-13 18:28:37,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 272 transitions, 1894 flow [2021-11-13 18:28:37,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 272 transitions, 1857 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-11-13 18:28:37,245 INFO L242 Difference]: Finished difference. Result has 164 places, 236 transitions, 1679 flow [2021-11-13 18:28:37,246 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1679, PETRI_PLACES=164, PETRI_TRANSITIONS=236} [2021-11-13 18:28:37,246 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 45 predicate places. [2021-11-13 18:28:37,247 INFO L470 AbstractCegarLoop]: Abstraction has has 164 places, 236 transitions, 1679 flow [2021-11-13 18:28:37,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 72.3125) internal successors, (1157), 16 states have internal predecessors, (1157), 0 states have call successors, (0), 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 18:28:37,248 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:28:37,248 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 18:28:37,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:37,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:37,463 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:28:37,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:37,463 INFO L85 PathProgramCache]: Analyzing trace with hash -593837835, now seen corresponding path program 2 times [2021-11-13 18:28:37,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:37,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741143732] [2021-11-13 18:28:37,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:28:37,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:37,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:37,466 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:37,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:28:37,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:28:37,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:28:37,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:28:37,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:37,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:28:37,717 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:28:37,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:28:37,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:28:37,955 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:28:37,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 25 [2021-11-13 18:28:38,099 INFO L354 Elim1Store]: treesize reduction 58, result has 28.4 percent of original size [2021-11-13 18:28:38,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 53 [2021-11-13 18:28:38,240 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:28:38,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 58 [2021-11-13 18:28:38,435 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:28:38,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 89 [2021-11-13 18:28:38,605 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 18:28:38,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:52,711 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 18:28:52,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:52,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741143732] [2021-11-13 18:28:52,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741143732] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:52,712 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:52,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 15 [2021-11-13 18:28:52,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129304525] [2021-11-13 18:28:52,712 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:52,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 18:28:52,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:52,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 18:28:52,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=178, Unknown=7, NotChecked=0, Total=240 [2021-11-13 18:28:52,718 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 116 [2021-11-13 18:28:52,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 236 transitions, 1679 flow. Second operand has 16 states, 16 states have (on average 72.25) internal successors, (1156), 16 states have internal predecessors, (1156), 0 states have call successors, (0), 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 18:28:52,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:28:52,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 116 [2021-11-13 18:28:52,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:28:53,887 INFO L129 PetriNetUnfolder]: 312/998 cut-off events. [2021-11-13 18:28:53,887 INFO L130 PetriNetUnfolder]: For 2699/2759 co-relation queries the response was YES. [2021-11-13 18:28:53,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4179 conditions, 998 events. 312/998 cut-off events. For 2699/2759 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5698 event pairs, 18 based on Foata normal form. 26/1017 useless extension candidates. Maximal degree in co-relation 4088. Up to 506 conditions per place. [2021-11-13 18:28:53,908 INFO L132 encePairwiseOnDemand]: 92/116 looper letters, 180 selfloop transitions, 69 changer transitions 4/318 dead transitions. [2021-11-13 18:28:53,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 318 transitions, 2975 flow [2021-11-13 18:28:53,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:28:53,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-13 18:28:53,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1147 transitions. [2021-11-13 18:28:53,918 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6591954022988505 [2021-11-13 18:28:53,918 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1147 transitions. [2021-11-13 18:28:53,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1147 transitions. [2021-11-13 18:28:53,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:28:53,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1147 transitions. [2021-11-13 18:28:53,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.46666666666667) internal successors, (1147), 15 states have internal predecessors, (1147), 0 states have call successors, (0), 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 18:28:53,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 116.0) internal successors, (1856), 16 states have internal predecessors, (1856), 0 states have call successors, (0), 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 18:28:53,932 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 116.0) internal successors, (1856), 16 states have internal predecessors, (1856), 0 states have call successors, (0), 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 18:28:53,933 INFO L186 Difference]: Start difference. First operand has 164 places, 236 transitions, 1679 flow. Second operand 15 states and 1147 transitions. [2021-11-13 18:28:53,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 318 transitions, 2975 flow [2021-11-13 18:28:53,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 318 transitions, 2895 flow, removed 34 selfloop flow, removed 6 redundant places. [2021-11-13 18:28:53,989 INFO L242 Difference]: Finished difference. Result has 179 places, 292 transitions, 2564 flow [2021-11-13 18:28:53,990 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2564, PETRI_PLACES=179, PETRI_TRANSITIONS=292} [2021-11-13 18:28:53,991 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 60 predicate places. [2021-11-13 18:28:53,991 INFO L470 AbstractCegarLoop]: Abstraction has has 179 places, 292 transitions, 2564 flow [2021-11-13 18:28:53,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 72.25) internal successors, (1156), 16 states have internal predecessors, (1156), 0 states have call successors, (0), 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 18:28:53,992 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:28:53,993 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 18:28:54,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:54,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:54,207 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:28:54,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash 28092069, now seen corresponding path program 3 times [2021-11-13 18:28:54,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:54,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888297847] [2021-11-13 18:28:54,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:28:54,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:54,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:54,209 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:54,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:28:54,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-13 18:28:54,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:28:54,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:28:54,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:54,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:28:54,494 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:28:54,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:28:54,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:28:54,688 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:28:54,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-13 18:28:54,955 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:28:54,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 51 [2021-11-13 18:28:55,234 INFO L354 Elim1Store]: treesize reduction 107, result has 24.6 percent of original size [2021-11-13 18:28:55,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 77 [2021-11-13 18:28:55,445 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:28:55,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 88 [2021-11-13 18:28:55,615 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 18:28:55,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:57,767 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((~x~0.offset (_ BitVec 32)) (|t_funThread1of1ForFork0_#t~nondet31| (_ BitVec 1))) (= (_ bv0 1) (bvneg (bvneg (select (store (select (store |c_#race| c_~x~0.base (store (select |c_#race| c_~x~0.base) ~x~0.offset |t_funThread1of1ForFork0_#t~nondet31|)) |c_ULTIMATE.start_main_~z~0#1.base|) (bvadd |c_ULTIMATE.start_main_~z~0#1.offset| (_ bv3 32)) (_ bv0 1)) (bvadd |c_ULTIMATE.start_main_~z~0#1.offset| (_ bv1 32))))))) (forall ((~x~0.offset (_ BitVec 32)) (|t_funThread1of1ForFork0_#t~nondet31| (_ BitVec 1))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store (select (store |c_#race| c_~x~0.base (store (select |c_#race| c_~x~0.base) ~x~0.offset |t_funThread1of1ForFork0_#t~nondet31|)) |c_ULTIMATE.start_main_~z~0#1.base|) (bvadd |c_ULTIMATE.start_main_~z~0#1.offset| (_ bv3 32)) (_ bv0 1)) (bvadd (_ bv2 32) |c_ULTIMATE.start_main_~z~0#1.offset|))))))) (forall ((~x~0.offset (_ BitVec 32)) (|t_funThread1of1ForFork0_#t~nondet31| (_ BitVec 1))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select (store (select (store |c_#race| c_~x~0.base (store (select |c_#race| c_~x~0.base) ~x~0.offset |t_funThread1of1ForFork0_#t~nondet31|)) |c_ULTIMATE.start_main_~z~0#1.base|) (bvadd |c_ULTIMATE.start_main_~z~0#1.offset| (_ bv3 32)) (_ bv0 1)) |c_ULTIMATE.start_main_~z~0#1.offset|)))))))) is different from false [2021-11-13 18:29:00,570 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 18:29:00,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:00,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888297847] [2021-11-13 18:29:00,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888297847] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:00,571 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:00,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 15 [2021-11-13 18:29:00,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474130803] [2021-11-13 18:29:00,571 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:00,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 18:29:00,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:00,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 18:29:00,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=163, Unknown=1, NotChecked=26, Total=240 [2021-11-13 18:29:00,576 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 116 [2021-11-13 18:29:00,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 292 transitions, 2564 flow. Second operand has 16 states, 16 states have (on average 72.3125) internal successors, (1157), 16 states have internal predecessors, (1157), 0 states have call successors, (0), 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 18:29:00,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:29:00,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 116 [2021-11-13 18:29:00,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:29:08,741 INFO L129 PetriNetUnfolder]: 312/991 cut-off events. [2021-11-13 18:29:08,741 INFO L130 PetriNetUnfolder]: For 4293/4357 co-relation queries the response was YES. [2021-11-13 18:29:08,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4581 conditions, 991 events. 312/991 cut-off events. For 4293/4357 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5679 event pairs, 28 based on Foata normal form. 22/998 useless extension candidates. Maximal degree in co-relation 4482. Up to 474 conditions per place. [2021-11-13 18:29:08,760 INFO L132 encePairwiseOnDemand]: 101/116 looper letters, 206 selfloop transitions, 49 changer transitions 1/321 dead transitions. [2021-11-13 18:29:08,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 321 transitions, 3344 flow [2021-11-13 18:29:08,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:29:08,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-13 18:29:08,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1128 transitions. [2021-11-13 18:29:08,767 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6482758620689655 [2021-11-13 18:29:08,767 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1128 transitions. [2021-11-13 18:29:08,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1128 transitions. [2021-11-13 18:29:08,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:29:08,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1128 transitions. [2021-11-13 18:29:08,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 75.2) internal successors, (1128), 15 states have internal predecessors, (1128), 0 states have call successors, (0), 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 18:29:08,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 116.0) internal successors, (1856), 16 states have internal predecessors, (1856), 0 states have call successors, (0), 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 18:29:08,779 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 116.0) internal successors, (1856), 16 states have internal predecessors, (1856), 0 states have call successors, (0), 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 18:29:08,780 INFO L186 Difference]: Start difference. First operand has 179 places, 292 transitions, 2564 flow. Second operand 15 states and 1128 transitions. [2021-11-13 18:29:08,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 321 transitions, 3344 flow [2021-11-13 18:29:08,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 321 transitions, 3292 flow, removed 20 selfloop flow, removed 6 redundant places. [2021-11-13 18:29:08,859 INFO L242 Difference]: Finished difference. Result has 191 places, 301 transitions, 2769 flow [2021-11-13 18:29:08,860 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=2516, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2769, PETRI_PLACES=191, PETRI_TRANSITIONS=301} [2021-11-13 18:29:08,861 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 72 predicate places. [2021-11-13 18:29:08,861 INFO L470 AbstractCegarLoop]: Abstraction has has 191 places, 301 transitions, 2769 flow [2021-11-13 18:29:08,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 72.3125) internal successors, (1157), 16 states have internal predecessors, (1157), 0 states have call successors, (0), 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 18:29:08,862 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:29:08,863 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 18:29:08,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:09,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:09,080 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:29:09,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:09,081 INFO L85 PathProgramCache]: Analyzing trace with hash 44726979, now seen corresponding path program 4 times [2021-11-13 18:29:09,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:09,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631718044] [2021-11-13 18:29:09,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:29:09,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:09,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:09,083 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:09,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:29:09,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:29:09,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:29:09,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:29:09,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:09,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:29:09,361 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:29:09,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-13 18:29:09,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:29:09,519 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:29:09,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-13 18:29:09,698 INFO L354 Elim1Store]: treesize reduction 58, result has 28.4 percent of original size [2021-11-13 18:29:09,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-11-13 18:29:09,786 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:29:09,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 49 [2021-11-13 18:29:09,940 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:29:09,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 67 [2021-11-13 18:29:10,038 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 18:29:10,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:20,873 WARN L227 SmtUtils]: Spent 5.44s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:29:21,216 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 18:29:21,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:21,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631718044] [2021-11-13 18:29:21,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631718044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:21,217 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:21,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 15 [2021-11-13 18:29:21,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594249510] [2021-11-13 18:29:21,218 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:21,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 18:29:21,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:21,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 18:29:21,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=182, Unknown=3, NotChecked=0, Total=240 [2021-11-13 18:29:21,223 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 116 [2021-11-13 18:29:21,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 301 transitions, 2769 flow. Second operand has 16 states, 16 states have (on average 72.3125) internal successors, (1157), 16 states have internal predecessors, (1157), 0 states have call successors, (0), 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 18:29:21,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:29:21,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 116 [2021-11-13 18:29:21,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:29:22,510 INFO L129 PetriNetUnfolder]: 345/1179 cut-off events. [2021-11-13 18:29:22,511 INFO L130 PetriNetUnfolder]: For 5779/5844 co-relation queries the response was YES. [2021-11-13 18:29:22,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5405 conditions, 1179 events. 345/1179 cut-off events. For 5779/5844 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7482 event pairs, 44 based on Foata normal form. 50/1214 useless extension candidates. Maximal degree in co-relation 5301. Up to 295 conditions per place. [2021-11-13 18:29:22,531 INFO L132 encePairwiseOnDemand]: 91/116 looper letters, 152 selfloop transitions, 165 changer transitions 4/386 dead transitions. [2021-11-13 18:29:22,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 386 transitions, 4273 flow [2021-11-13 18:29:22,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:29:22,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-13 18:29:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1028 transitions. [2021-11-13 18:29:22,537 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6816976127320955 [2021-11-13 18:29:22,537 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1028 transitions. [2021-11-13 18:29:22,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1028 transitions. [2021-11-13 18:29:22,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:29:22,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1028 transitions. [2021-11-13 18:29:22,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.07692307692308) internal successors, (1028), 13 states have internal predecessors, (1028), 0 states have call successors, (0), 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 18:29:22,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 116.0) internal successors, (1624), 14 states have internal predecessors, (1624), 0 states have call successors, (0), 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 18:29:22,549 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 116.0) internal successors, (1624), 14 states have internal predecessors, (1624), 0 states have call successors, (0), 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 18:29:22,549 INFO L186 Difference]: Start difference. First operand has 191 places, 301 transitions, 2769 flow. Second operand 13 states and 1028 transitions. [2021-11-13 18:29:22,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 386 transitions, 4273 flow [2021-11-13 18:29:22,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 386 transitions, 4237 flow, removed 10 selfloop flow, removed 7 redundant places. [2021-11-13 18:29:22,637 INFO L242 Difference]: Finished difference. Result has 198 places, 340 transitions, 3705 flow [2021-11-13 18:29:22,638 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=2733, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3705, PETRI_PLACES=198, PETRI_TRANSITIONS=340} [2021-11-13 18:29:22,639 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 79 predicate places. [2021-11-13 18:29:22,639 INFO L470 AbstractCegarLoop]: Abstraction has has 198 places, 340 transitions, 3705 flow [2021-11-13 18:29:22,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 72.3125) internal successors, (1157), 16 states have internal predecessors, (1157), 0 states have call successors, (0), 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 18:29:22,640 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:29:22,640 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 18:29:22,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:22,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:22,856 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:29:22,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:22,856 INFO L85 PathProgramCache]: Analyzing trace with hash -444422331, now seen corresponding path program 5 times [2021-11-13 18:29:22,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:22,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326140252] [2021-11-13 18:29:22,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:29:22,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:22,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:22,858 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:22,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 18:29:22,973 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:29:22,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:29:22,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:29:22,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:23,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:29:23,098 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:29:23,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:29:23,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:29:23,276 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:29:23,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-13 18:29:23,438 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:29:23,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 39 [2021-11-13 18:29:23,606 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:29:23,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 70 [2021-11-13 18:29:23,886 INFO L354 Elim1Store]: treesize reduction 168, result has 21.9 percent of original size [2021-11-13 18:29:23,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 97 [2021-11-13 18:29:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:29:24,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:50,238 WARN L227 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:29:54,953 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 18:29:54,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:54,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326140252] [2021-11-13 18:29:54,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326140252] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:54,954 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:54,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 14 [2021-11-13 18:29:54,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952848063] [2021-11-13 18:29:54,954 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:54,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:29:54,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:54,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:29:54,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=154, Unknown=6, NotChecked=0, Total=210 [2021-11-13 18:29:54,957 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 116 [2021-11-13 18:29:54,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 340 transitions, 3705 flow. Second operand has 15 states, 15 states have (on average 72.4) internal successors, (1086), 15 states have internal predecessors, (1086), 0 states have call successors, (0), 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 18:29:54,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:29:54,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 116 [2021-11-13 18:29:54,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:29:59,787 INFO L129 PetriNetUnfolder]: 346/1176 cut-off events. [2021-11-13 18:29:59,787 INFO L130 PetriNetUnfolder]: For 7135/7216 co-relation queries the response was YES. [2021-11-13 18:29:59,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5970 conditions, 1176 events. 346/1176 cut-off events. For 7135/7216 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7479 event pairs, 39 based on Foata normal form. 21/1181 useless extension candidates. Maximal degree in co-relation 5862. Up to 436 conditions per place. [2021-11-13 18:29:59,825 INFO L132 encePairwiseOnDemand]: 100/116 looper letters, 249 selfloop transitions, 47 changer transitions 1/362 dead transitions. [2021-11-13 18:29:59,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 362 transitions, 4499 flow [2021-11-13 18:29:59,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:29:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-13 18:29:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1123 transitions. [2021-11-13 18:29:59,835 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6454022988505748 [2021-11-13 18:29:59,835 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1123 transitions. [2021-11-13 18:29:59,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1123 transitions. [2021-11-13 18:29:59,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:29:59,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1123 transitions. [2021-11-13 18:29:59,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 74.86666666666666) internal successors, (1123), 15 states have internal predecessors, (1123), 0 states have call successors, (0), 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 18:29:59,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 116.0) internal successors, (1856), 16 states have internal predecessors, (1856), 0 states have call successors, (0), 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 18:29:59,846 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 116.0) internal successors, (1856), 16 states have internal predecessors, (1856), 0 states have call successors, (0), 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 18:29:59,846 INFO L186 Difference]: Start difference. First operand has 198 places, 340 transitions, 3705 flow. Second operand 15 states and 1123 transitions. [2021-11-13 18:29:59,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 362 transitions, 4499 flow [2021-11-13 18:29:59,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 362 transitions, 4432 flow, removed 26 selfloop flow, removed 7 redundant places. [2021-11-13 18:29:59,949 INFO L242 Difference]: Finished difference. Result has 206 places, 342 transitions, 3771 flow [2021-11-13 18:29:59,950 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=3638, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3771, PETRI_PLACES=206, PETRI_TRANSITIONS=342} [2021-11-13 18:29:59,950 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 87 predicate places. [2021-11-13 18:29:59,950 INFO L470 AbstractCegarLoop]: Abstraction has has 206 places, 342 transitions, 3771 flow [2021-11-13 18:29:59,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 72.4) internal successors, (1086), 15 states have internal predecessors, (1086), 0 states have call successors, (0), 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 18:29:59,951 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:29:59,952 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] [2021-11-13 18:29:59,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:30:00,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:30:00,167 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:30:00,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:00,167 INFO L85 PathProgramCache]: Analyzing trace with hash -634562106, now seen corresponding path program 1 times [2021-11-13 18:30:00,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:30:00,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985544365] [2021-11-13 18:30:00,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:00,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:30:00,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:30:00,168 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:30:00,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 18:30:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:30:00,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 18:30:00,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:30:00,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:30:00,347 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:30:00,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-13 18:30:00,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:30:00,478 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:30:00,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-13 18:30:00,550 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:30:00,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 41 [2021-11-13 18:30:00,757 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-13 18:30:00,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2021-11-13 18:30:00,888 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:30:00,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 86 [2021-11-13 18:30:01,125 INFO L354 Elim1Store]: treesize reduction 255, result has 18.3 percent of original size [2021-11-13 18:30:01,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 107 treesize of output 133 [2021-11-13 18:30:05,289 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 18:30:05,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:30:35,251 WARN L227 SmtUtils]: Spent 14.09s on a formula simplification. DAG size of input: 53 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:31:02,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:31:02,559 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 18:31:02,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:31:02,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985544365] [2021-11-13 18:31:02,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985544365] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:31:02,559 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:31:02,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 18 [2021-11-13 18:31:02,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212504400] [2021-11-13 18:31:02,560 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:31:02,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-13 18:31:02,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:31:02,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-13 18:31:02,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=254, Unknown=15, NotChecked=0, Total=342 [2021-11-13 18:31:02,563 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-11-13 18:31:02,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 342 transitions, 3771 flow. Second operand has 19 states, 19 states have (on average 70.21052631578948) internal successors, (1334), 19 states have internal predecessors, (1334), 0 states have call successors, (0), 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 18:31:02,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:31:02,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-11-13 18:31:02,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:31:03,537 INFO L129 PetriNetUnfolder]: 380/1250 cut-off events. [2021-11-13 18:31:03,537 INFO L130 PetriNetUnfolder]: For 7655/7727 co-relation queries the response was YES. [2021-11-13 18:31:03,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6326 conditions, 1250 events. 380/1250 cut-off events. For 7655/7727 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8004 event pairs, 46 based on Foata normal form. 18/1252 useless extension candidates. Maximal degree in co-relation 6217. Up to 482 conditions per place. [2021-11-13 18:31:03,556 INFO L132 encePairwiseOnDemand]: 98/116 looper letters, 264 selfloop transitions, 50 changer transitions 0/376 dead transitions. [2021-11-13 18:31:03,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 376 transitions, 4688 flow [2021-11-13 18:31:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:31:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-13 18:31:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1172 transitions. [2021-11-13 18:31:03,564 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6314655172413793 [2021-11-13 18:31:03,564 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1172 transitions. [2021-11-13 18:31:03,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1172 transitions. [2021-11-13 18:31:03,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:31:03,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1172 transitions. [2021-11-13 18:31:03,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.25) internal successors, (1172), 16 states have internal predecessors, (1172), 0 states have call successors, (0), 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 18:31:03,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 116.0) internal successors, (1972), 17 states have internal predecessors, (1972), 0 states have call successors, (0), 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 18:31:03,576 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 116.0) internal successors, (1972), 17 states have internal predecessors, (1972), 0 states have call successors, (0), 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 18:31:03,577 INFO L186 Difference]: Start difference. First operand has 206 places, 342 transitions, 3771 flow. Second operand 16 states and 1172 transitions. [2021-11-13 18:31:03,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 376 transitions, 4688 flow [2021-11-13 18:31:03,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 376 transitions, 4621 flow, removed 7 selfloop flow, removed 10 redundant places. [2021-11-13 18:31:03,724 INFO L242 Difference]: Finished difference. Result has 215 places, 350 transitions, 3943 flow [2021-11-13 18:31:03,725 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=3705, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3943, PETRI_PLACES=215, PETRI_TRANSITIONS=350} [2021-11-13 18:31:03,726 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 96 predicate places. [2021-11-13 18:31:03,726 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 350 transitions, 3943 flow [2021-11-13 18:31:03,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 70.21052631578948) internal successors, (1334), 19 states have internal predecessors, (1334), 0 states have call successors, (0), 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 18:31:03,727 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:31:03,727 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] [2021-11-13 18:31:03,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:31:03,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:31:03,945 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:31:03,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:31:03,946 INFO L85 PathProgramCache]: Analyzing trace with hash -506565870, now seen corresponding path program 2 times [2021-11-13 18:31:03,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:31:03,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159354859] [2021-11-13 18:31:03,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:31:03,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:31:03,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:31:03,949 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:31:03,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 18:31:04,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:31:04,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:31:04,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 18:31:04,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:31:04,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:31:04,217 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:31:04,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-13 18:31:04,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:31:04,474 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:31:04,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 25 [2021-11-13 18:31:04,598 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:31:04,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 58 [2021-11-13 18:31:04,874 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-13 18:31:04,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 77 [2021-11-13 18:31:05,146 INFO L354 Elim1Store]: treesize reduction 176, result has 20.4 percent of original size [2021-11-13 18:31:05,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 114 [2021-11-13 18:31:11,553 INFO L354 Elim1Store]: treesize reduction 247, result has 18.8 percent of original size [2021-11-13 18:31:11,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 137 treesize of output 163 [2021-11-13 18:31:15,855 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 18:31:15,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:17,844 WARN L227 SmtUtils]: Spent 26.26s on a formula simplification. DAG size of input: 78 DAG size of output: 45 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 18:32:17,844 INFO L354 Elim1Store]: treesize reduction 318, result has 25.0 percent of original size [2021-11-13 18:32:17,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 126 [2021-11-13 18:32:17,859 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:32:17,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 120 [2021-11-13 18:32:17,886 INFO L354 Elim1Store]: treesize reduction 104, result has 1.0 percent of original size [2021-11-13 18:32:17,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 127 treesize of output 95 [2021-11-13 18:32:18,080 INFO L354 Elim1Store]: treesize reduction 141, result has 0.7 percent of original size [2021-11-13 18:32:18,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 1 [2021-11-13 18:32:18,244 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 18:32:18,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:32:18,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159354859] [2021-11-13 18:32:18,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159354859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:18,245 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:18,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 18 [2021-11-13 18:32:18,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582038685] [2021-11-13 18:32:18,245 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:18,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-13 18:32:18,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:32:18,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-13 18:32:18,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=259, Unknown=14, NotChecked=0, Total=342 [2021-11-13 18:32:18,248 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-11-13 18:32:18,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 350 transitions, 3943 flow. Second operand has 19 states, 19 states have (on average 70.21052631578948) internal successors, (1334), 19 states have internal predecessors, (1334), 0 states have call successors, (0), 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 18:32:18,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:32:18,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-11-13 18:32:18,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:32:27,699 INFO L129 PetriNetUnfolder]: 402/1333 cut-off events. [2021-11-13 18:32:27,699 INFO L130 PetriNetUnfolder]: For 9302/9409 co-relation queries the response was YES. [2021-11-13 18:32:27,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6840 conditions, 1333 events. 402/1333 cut-off events. For 9302/9409 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8739 event pairs, 28 based on Foata normal form. 46/1374 useless extension candidates. Maximal degree in co-relation 6727. Up to 441 conditions per place. [2021-11-13 18:32:27,718 INFO L132 encePairwiseOnDemand]: 88/116 looper letters, 225 selfloop transitions, 139 changer transitions 6/432 dead transitions. [2021-11-13 18:32:27,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 432 transitions, 5525 flow [2021-11-13 18:32:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 18:32:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-13 18:32:27,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1367 transitions. [2021-11-13 18:32:27,723 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6546934865900383 [2021-11-13 18:32:27,723 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1367 transitions. [2021-11-13 18:32:27,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1367 transitions. [2021-11-13 18:32:27,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:32:27,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1367 transitions. [2021-11-13 18:32:27,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 75.94444444444444) internal successors, (1367), 18 states have internal predecessors, (1367), 0 states have call successors, (0), 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 18:32:27,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 116.0) internal successors, (2204), 19 states have internal predecessors, (2204), 0 states have call successors, (0), 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 18:32:27,732 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 116.0) internal successors, (2204), 19 states have internal predecessors, (2204), 0 states have call successors, (0), 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 18:32:27,732 INFO L186 Difference]: Start difference. First operand has 215 places, 350 transitions, 3943 flow. Second operand 18 states and 1367 transitions. [2021-11-13 18:32:27,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 432 transitions, 5525 flow [2021-11-13 18:32:27,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 432 transitions, 5408 flow, removed 9 selfloop flow, removed 11 redundant places. [2021-11-13 18:32:27,840 INFO L242 Difference]: Finished difference. Result has 231 places, 386 transitions, 4893 flow [2021-11-13 18:32:27,841 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=3838, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4893, PETRI_PLACES=231, PETRI_TRANSITIONS=386} [2021-11-13 18:32:27,842 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 112 predicate places. [2021-11-13 18:32:27,842 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 386 transitions, 4893 flow [2021-11-13 18:32:27,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 70.21052631578948) internal successors, (1334), 19 states have internal predecessors, (1334), 0 states have call successors, (0), 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 18:32:27,843 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:32:27,844 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 18:32:27,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:28,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:32:28,067 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:32:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash 263497923, now seen corresponding path program 6 times [2021-11-13 18:32:28,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:28,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328915446] [2021-11-13 18:32:28,068 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 18:32:28,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:28,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:28,069 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:28,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 18:32:28,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-13 18:32:28,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:32:28,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:32:28,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:28,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:32:28,309 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:32:28,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-13 18:32:28,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:32:28,478 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:32:28,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-13 18:32:28,542 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:32:28,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 38 [2021-11-13 18:32:28,644 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:32:28,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 58 [2021-11-13 18:32:29,204 INFO L354 Elim1Store]: treesize reduction 168, result has 21.9 percent of original size [2021-11-13 18:32:29,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 95 [2021-11-13 18:32:29,341 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 18:32:29,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:52,464 WARN L227 SmtUtils]: Spent 12.93s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:32:53,122 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 18:32:53,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:32:53,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328915446] [2021-11-13 18:32:53,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328915446] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:53,123 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:53,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 13 [2021-11-13 18:32:53,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290046766] [2021-11-13 18:32:53,123 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:53,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:32:53,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:32:53,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:32:53,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=135, Unknown=5, NotChecked=0, Total=182 [2021-11-13 18:32:53,126 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 116 [2021-11-13 18:32:53,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 386 transitions, 4893 flow. Second operand has 14 states, 14 states have (on average 72.5) internal successors, (1015), 14 states have internal predecessors, (1015), 0 states have call successors, (0), 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 18:32:53,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:32:53,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 116 [2021-11-13 18:32:53,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:32:54,432 INFO L129 PetriNetUnfolder]: 362/1268 cut-off events. [2021-11-13 18:32:54,432 INFO L130 PetriNetUnfolder]: For 12831/12980 co-relation queries the response was YES. [2021-11-13 18:32:54,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7128 conditions, 1268 events. 362/1268 cut-off events. For 12831/12980 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8353 event pairs, 33 based on Foata normal form. 99/1357 useless extension candidates. Maximal degree in co-relation 7005. Up to 281 conditions per place. [2021-11-13 18:32:54,446 INFO L132 encePairwiseOnDemand]: 96/116 looper letters, 178 selfloop transitions, 178 changer transitions 10/433 dead transitions. [2021-11-13 18:32:54,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 433 transitions, 6115 flow [2021-11-13 18:32:54,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:32:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-13 18:32:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1026 transitions. [2021-11-13 18:32:54,449 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6803713527851459 [2021-11-13 18:32:54,449 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1026 transitions. [2021-11-13 18:32:54,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1026 transitions. [2021-11-13 18:32:54,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:32:54,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1026 transitions. [2021-11-13 18:32:54,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.92307692307692) internal successors, (1026), 13 states have internal predecessors, (1026), 0 states have call successors, (0), 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 18:32:54,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 116.0) internal successors, (1624), 14 states have internal predecessors, (1624), 0 states have call successors, (0), 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 18:32:54,455 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 116.0) internal successors, (1624), 14 states have internal predecessors, (1624), 0 states have call successors, (0), 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 18:32:54,455 INFO L186 Difference]: Start difference. First operand has 231 places, 386 transitions, 4893 flow. Second operand 13 states and 1026 transitions. [2021-11-13 18:32:54,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 433 transitions, 6115 flow [2021-11-13 18:32:54,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 433 transitions, 6011 flow, removed 27 selfloop flow, removed 7 redundant places. [2021-11-13 18:32:54,562 INFO L242 Difference]: Finished difference. Result has 237 places, 390 transitions, 5317 flow [2021-11-13 18:32:54,562 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=4770, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5317, PETRI_PLACES=237, PETRI_TRANSITIONS=390} [2021-11-13 18:32:54,563 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 118 predicate places. [2021-11-13 18:32:54,563 INFO L470 AbstractCegarLoop]: Abstraction has has 237 places, 390 transitions, 5317 flow [2021-11-13 18:32:54,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 72.5) internal successors, (1015), 14 states have internal predecessors, (1015), 0 states have call successors, (0), 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 18:32:54,563 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:32:54,564 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] [2021-11-13 18:32:54,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:54,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:32:54,764 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:32:54,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:54,765 INFO L85 PathProgramCache]: Analyzing trace with hash 870857260, now seen corresponding path program 3 times [2021-11-13 18:32:54,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:54,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510669461] [2021-11-13 18:32:54,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:32:54,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:54,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:54,767 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:54,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 18:32:54,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-13 18:32:54,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:32:55,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 18:32:55,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:55,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:32:55,118 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:32:55,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:32:55,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:32:55,315 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:32:55,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-13 18:32:55,465 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:32:55,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 41 [2021-11-13 18:32:55,607 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-13 18:32:55,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 69 [2021-11-13 18:32:55,755 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:32:55,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 103 [2021-11-13 18:32:56,059 INFO L354 Elim1Store]: treesize reduction 255, result has 18.3 percent of original size [2021-11-13 18:32:56,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 124 treesize of output 150 [2021-11-13 18:33:00,281 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 18:33:00,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:33:04,668 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((~x~0.offset (_ BitVec 32)) (|t_funThread1of1ForFork0_#t~nondet31| (_ BitVec 1))) (= (_ bv0 1) (bvneg (bvneg (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~z~0#1.offset| (_ bv3 32)))) (select (select (let ((.cse0 (let ((.cse1 (store |c_#race| c_~x~0.base (store (select |c_#race| c_~x~0.base) ~x~0.offset |t_funThread1of1ForFork0_#t~nondet31|)))) (store .cse1 |c_ULTIMATE.start_main_~z~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~z~0#1.base|) .cse2 (_ bv0 1)))))) (store .cse0 c_~x~0.base (store (select .cse0 c_~x~0.base) (bvadd ~x~0.offset (_ bv1 32)) |t_funThread1of1ForFork0_#t~nondet31|))) |c_ULTIMATE.start_main_~z~0#1.base|) .cse2)))))) (forall ((~x~0.offset (_ BitVec 32)) (|t_funThread1of1ForFork0_#t~nondet31| (_ BitVec 1))) (= (_ bv0 1) (bvneg (bvneg (select (select (let ((.cse3 (let ((.cse4 (store |c_#race| c_~x~0.base (store (select |c_#race| c_~x~0.base) ~x~0.offset |t_funThread1of1ForFork0_#t~nondet31|)))) (store .cse4 |c_ULTIMATE.start_main_~z~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~z~0#1.base|) (bvadd |c_ULTIMATE.start_main_~z~0#1.offset| (_ bv3 32)) (_ bv0 1)))))) (store .cse3 c_~x~0.base (store (select .cse3 c_~x~0.base) (bvadd ~x~0.offset (_ bv1 32)) |t_funThread1of1ForFork0_#t~nondet31|))) |c_ULTIMATE.start_main_~z~0#1.base|) |c_ULTIMATE.start_main_~z~0#1.offset|))))) (forall ((~x~0.offset (_ BitVec 32)) (|t_funThread1of1ForFork0_#t~nondet31| (_ BitVec 1))) (= (_ bv0 1) (bvneg (select (select (let ((.cse5 (let ((.cse6 (store |c_#race| c_~x~0.base (store (select |c_#race| c_~x~0.base) ~x~0.offset |t_funThread1of1ForFork0_#t~nondet31|)))) (store .cse6 |c_ULTIMATE.start_main_~z~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~z~0#1.base|) (bvadd |c_ULTIMATE.start_main_~z~0#1.offset| (_ bv3 32)) (_ bv0 1)))))) (store .cse5 c_~x~0.base (store (select .cse5 c_~x~0.base) (bvadd ~x~0.offset (_ bv1 32)) |t_funThread1of1ForFork0_#t~nondet31|))) |c_ULTIMATE.start_main_~z~0#1.base|) (bvadd |c_ULTIMATE.start_main_~z~0#1.offset| (_ bv1 32)))))) (forall ((~x~0.offset (_ BitVec 32)) (|t_funThread1of1ForFork0_#t~nondet31| (_ BitVec 1))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select (select (let ((.cse7 (let ((.cse8 (store |c_#race| c_~x~0.base (store (select |c_#race| c_~x~0.base) ~x~0.offset |t_funThread1of1ForFork0_#t~nondet31|)))) (store .cse8 |c_ULTIMATE.start_main_~z~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~z~0#1.base|) (bvadd |c_ULTIMATE.start_main_~z~0#1.offset| (_ bv3 32)) (_ bv0 1)))))) (store .cse7 c_~x~0.base (store (select .cse7 c_~x~0.base) (bvadd ~x~0.offset (_ bv1 32)) |t_funThread1of1ForFork0_#t~nondet31|))) |c_ULTIMATE.start_main_~z~0#1.base|) (bvadd (_ bv2 32) |c_ULTIMATE.start_main_~z~0#1.offset|)))))))) is different from false [2021-11-13 18:33:28,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:33:28,372 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 18:33:28,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:33:28,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510669461] [2021-11-13 18:33:28,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510669461] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:28,373 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:28,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 18 [2021-11-13 18:33:28,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7000103] [2021-11-13 18:33:28,378 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:28,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-13 18:33:28,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:33:28,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-13 18:33:28,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=233, Unknown=9, NotChecked=32, Total=342 [2021-11-13 18:33:28,383 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-11-13 18:33:28,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 390 transitions, 5317 flow. Second operand has 19 states, 19 states have (on average 70.21052631578948) internal successors, (1334), 19 states have internal predecessors, (1334), 0 states have call successors, (0), 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 18:33:28,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:33:28,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-11-13 18:33:28,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:33:40,129 WARN L227 SmtUtils]: Spent 10.97s on a formula simplification. DAG size of input: 81 DAG size of output: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:33:43,340 INFO L129 PetriNetUnfolder]: 436/1426 cut-off events. [2021-11-13 18:33:43,340 INFO L130 PetriNetUnfolder]: For 15324/15413 co-relation queries the response was YES. [2021-11-13 18:33:43,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8490 conditions, 1426 events. 436/1426 cut-off events. For 15324/15413 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9448 event pairs, 7 based on Foata normal form. 26/1449 useless extension candidates. Maximal degree in co-relation 8366. Up to 338 conditions per place. [2021-11-13 18:33:43,372 INFO L132 encePairwiseOnDemand]: 94/116 looper letters, 305 selfloop transitions, 118 changer transitions 8/493 dead transitions. [2021-11-13 18:33:43,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 493 transitions, 7271 flow [2021-11-13 18:33:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 18:33:43,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-13 18:33:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1414 transitions. [2021-11-13 18:33:43,376 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6415607985480943 [2021-11-13 18:33:43,376 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1414 transitions. [2021-11-13 18:33:43,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1414 transitions. [2021-11-13 18:33:43,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:33:43,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1414 transitions. [2021-11-13 18:33:43,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 74.42105263157895) internal successors, (1414), 19 states have internal predecessors, (1414), 0 states have call successors, (0), 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 18:33:43,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 116.0) internal successors, (2320), 20 states have internal predecessors, (2320), 0 states have call successors, (0), 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 18:33:43,385 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 116.0) internal successors, (2320), 20 states have internal predecessors, (2320), 0 states have call successors, (0), 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 18:33:43,385 INFO L186 Difference]: Start difference. First operand has 237 places, 390 transitions, 5317 flow. Second operand 19 states and 1414 transitions. [2021-11-13 18:33:43,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 493 transitions, 7271 flow [2021-11-13 18:33:43,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 493 transitions, 7173 flow, removed 15 selfloop flow, removed 8 redundant places. [2021-11-13 18:33:43,520 INFO L242 Difference]: Finished difference. Result has 250 places, 413 transitions, 5866 flow [2021-11-13 18:33:43,520 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=5238, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5866, PETRI_PLACES=250, PETRI_TRANSITIONS=413} [2021-11-13 18:33:43,521 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 131 predicate places. [2021-11-13 18:33:43,521 INFO L470 AbstractCegarLoop]: Abstraction has has 250 places, 413 transitions, 5866 flow [2021-11-13 18:33:43,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 70.21052631578948) internal successors, (1334), 19 states have internal predecessors, (1334), 0 states have call successors, (0), 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 18:33:43,522 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:33:43,522 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] [2021-11-13 18:33:43,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:33:43,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:33:43,735 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:33:43,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:43,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1386539470, now seen corresponding path program 4 times [2021-11-13 18:33:43,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:33:43,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62276621] [2021-11-13 18:33:43,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:33:43,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:33:43,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:33:43,737 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:33:43,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 18:33:43,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:33:43,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:33:43,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 18:33:43,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:33:43,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:33:43,961 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:33:43,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:33:44,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:33:44,115 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:33:44,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-13 18:33:44,315 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-13 18:33:44,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 45 [2021-11-13 18:33:44,447 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:33:44,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 70 [2021-11-13 18:33:44,616 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:33:44,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 98 [2021-11-13 18:33:44,902 INFO L354 Elim1Store]: treesize reduction 255, result has 18.3 percent of original size [2021-11-13 18:33:44,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 120 treesize of output 146 [2021-11-13 18:33:49,121 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 18:33:49,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:34:18,036 WARN L227 SmtUtils]: Spent 15.32s on a formula simplification. DAG size of input: 59 DAG size of output: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:34:35,345 WARN L227 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 60 DAG size of output: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:34:35,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:34:35,589 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 18:34:35,590 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:34:35,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62276621] [2021-11-13 18:34:35,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62276621] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:34:35,590 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:34:35,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 18 [2021-11-13 18:34:35,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957490331] [2021-11-13 18:34:35,590 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:34:35,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-13 18:34:35,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:34:35,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-13 18:34:35,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=259, Unknown=10, NotChecked=0, Total=342 [2021-11-13 18:34:35,593 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-11-13 18:34:35,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 413 transitions, 5866 flow. Second operand has 19 states, 19 states have (on average 70.21052631578948) internal successors, (1334), 19 states have internal predecessors, (1334), 0 states have call successors, (0), 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 18:34:35,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:34:35,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-11-13 18:34:35,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:34:44,908 INFO L129 PetriNetUnfolder]: 512/1773 cut-off events. [2021-11-13 18:34:44,908 INFO L130 PetriNetUnfolder]: For 21373/21484 co-relation queries the response was YES. [2021-11-13 18:34:44,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10640 conditions, 1773 events. 512/1773 cut-off events. For 21373/21484 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13223 event pairs, 26 based on Foata normal form. 79/1846 useless extension candidates. Maximal degree in co-relation 10513. Up to 484 conditions per place. [2021-11-13 18:34:44,931 INFO L132 encePairwiseOnDemand]: 91/116 looper letters, 237 selfloop transitions, 267 changer transitions 19/585 dead transitions. [2021-11-13 18:34:44,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 585 transitions, 9689 flow [2021-11-13 18:34:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 18:34:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-13 18:34:44,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1531 transitions. [2021-11-13 18:34:44,948 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6599137931034482 [2021-11-13 18:34:44,948 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1531 transitions. [2021-11-13 18:34:44,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1531 transitions. [2021-11-13 18:34:44,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:34:44,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1531 transitions. [2021-11-13 18:34:44,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 76.55) internal successors, (1531), 20 states have internal predecessors, (1531), 0 states have call successors, (0), 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 18:34:44,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 116.0) internal successors, (2436), 21 states have internal predecessors, (2436), 0 states have call successors, (0), 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 18:34:44,959 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 116.0) internal successors, (2436), 21 states have internal predecessors, (2436), 0 states have call successors, (0), 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 18:34:44,959 INFO L186 Difference]: Start difference. First operand has 250 places, 413 transitions, 5866 flow. Second operand 20 states and 1531 transitions. [2021-11-13 18:34:44,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 585 transitions, 9689 flow [2021-11-13 18:34:45,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 585 transitions, 9561 flow, removed 53 selfloop flow, removed 7 redundant places. [2021-11-13 18:34:45,201 INFO L242 Difference]: Finished difference. Result has 270 places, 514 transitions, 8829 flow [2021-11-13 18:34:45,202 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=5789, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=8829, PETRI_PLACES=270, PETRI_TRANSITIONS=514} [2021-11-13 18:34:45,203 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 151 predicate places. [2021-11-13 18:34:45,203 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 514 transitions, 8829 flow [2021-11-13 18:34:45,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 70.21052631578948) internal successors, (1334), 19 states have internal predecessors, (1334), 0 states have call successors, (0), 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 18:34:45,204 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:34:45,204 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 18:34:45,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:34:45,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:34:45,419 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:34:45,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:34:45,419 INFO L85 PathProgramCache]: Analyzing trace with hash 37244731, now seen corresponding path program 1 times [2021-11-13 18:34:45,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:34:45,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408058271] [2021-11-13 18:34:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:45,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:34:45,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:34:45,421 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:34:45,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 18:34:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:45,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:34:45,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:34:45,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:34:45,601 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:34:45,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:34:45,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:34:45,769 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:34:45,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-13 18:34:45,862 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:34:45,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 58 [2021-11-13 18:34:46,006 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:34:46,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 102 [2021-11-13 18:34:46,272 INFO L354 Elim1Store]: treesize reduction 168, result has 21.9 percent of original size [2021-11-13 18:34:46,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 138 treesize of output 158 [2021-11-13 18:34:46,479 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 18:34:46,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:34:56,701 WARN L227 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:35:27,314 WARN L227 SmtUtils]: Spent 12.07s on a formula simplification. DAG size of input: 61 DAG size of output: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:35:39,799 WARN L227 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 58 DAG size of output: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:35:39,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:35:40,011 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 18:35:40,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:35:40,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408058271] [2021-11-13 18:35:40,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408058271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:35:40,012 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:35:40,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-11-13 18:35:40,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900194184] [2021-11-13 18:35:40,012 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:35:40,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:35:40,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:35:40,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:35:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=201, Unknown=11, NotChecked=0, Total=272 [2021-11-13 18:35:40,015 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-11-13 18:35:40,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 514 transitions, 8829 flow. Second operand has 17 states, 17 states have (on average 70.23529411764706) internal successors, (1194), 17 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 18:35:40,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:35:40,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-11-13 18:35:40,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:35:40,983 INFO L129 PetriNetUnfolder]: 486/1721 cut-off events. [2021-11-13 18:35:40,983 INFO L130 PetriNetUnfolder]: For 26586/26684 co-relation queries the response was YES. [2021-11-13 18:35:40,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11419 conditions, 1721 events. 486/1721 cut-off events. For 26586/26684 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 12921 event pairs, 50 based on Foata normal form. 18/1722 useless extension candidates. Maximal degree in co-relation 11283. Up to 907 conditions per place. [2021-11-13 18:35:41,004 INFO L132 encePairwiseOnDemand]: 99/116 looper letters, 435 selfloop transitions, 82 changer transitions 0/579 dead transitions. [2021-11-13 18:35:41,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 579 transitions, 11159 flow [2021-11-13 18:35:41,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:35:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-13 18:35:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1169 transitions. [2021-11-13 18:35:41,007 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6298491379310345 [2021-11-13 18:35:41,007 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1169 transitions. [2021-11-13 18:35:41,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1169 transitions. [2021-11-13 18:35:41,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:35:41,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1169 transitions. [2021-11-13 18:35:41,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.0625) internal successors, (1169), 16 states have internal predecessors, (1169), 0 states have call successors, (0), 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 18:35:41,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 116.0) internal successors, (1972), 17 states have internal predecessors, (1972), 0 states have call successors, (0), 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 18:35:41,014 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 116.0) internal successors, (1972), 17 states have internal predecessors, (1972), 0 states have call successors, (0), 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 18:35:41,014 INFO L186 Difference]: Start difference. First operand has 270 places, 514 transitions, 8829 flow. Second operand 16 states and 1169 transitions. [2021-11-13 18:35:41,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 579 transitions, 11159 flow [2021-11-13 18:35:41,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 579 transitions, 10973 flow, removed 65 selfloop flow, removed 7 redundant places. [2021-11-13 18:35:41,446 INFO L242 Difference]: Finished difference. Result has 281 places, 549 transitions, 9453 flow [2021-11-13 18:35:41,446 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=8683, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9453, PETRI_PLACES=281, PETRI_TRANSITIONS=549} [2021-11-13 18:35:41,447 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 162 predicate places. [2021-11-13 18:35:41,447 INFO L470 AbstractCegarLoop]: Abstraction has has 281 places, 549 transitions, 9453 flow [2021-11-13 18:35:41,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 70.23529411764706) internal successors, (1194), 17 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 18:35:41,448 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:35:41,448 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 18:35:41,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 18:35:41,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:35:41,663 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:35:41,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:35:41,664 INFO L85 PathProgramCache]: Analyzing trace with hash -813185155, now seen corresponding path program 2 times [2021-11-13 18:35:41,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:35:41,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5025284] [2021-11-13 18:35:41,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:35:41,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:35:41,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:35:41,666 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:35:41,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 18:35:41,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:35:41,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:35:41,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:35:41,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:35:41,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:35:41,914 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:35:41,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:35:42,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:35:42,149 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:35:42,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-13 18:35:42,250 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:35:42,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 60 [2021-11-13 18:35:42,475 INFO L354 Elim1Store]: treesize reduction 107, result has 24.6 percent of original size [2021-11-13 18:35:42,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 100 [2021-11-13 18:35:42,789 INFO L354 Elim1Store]: treesize reduction 160, result has 22.0 percent of original size [2021-11-13 18:35:42,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 122 treesize of output 142 [2021-11-13 18:35:43,004 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 18:35:43,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:35:53,298 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:36:07,493 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:36:23,127 WARN L227 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 62 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:36:23,215 INFO L354 Elim1Store]: treesize reduction 182, result has 19.1 percent of original size [2021-11-13 18:36:23,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 65 treesize of output 64 [2021-11-13 18:36:23,226 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:36:23,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 60 [2021-11-13 18:36:23,244 INFO L354 Elim1Store]: treesize reduction 110, result has 0.9 percent of original size [2021-11-13 18:36:23,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 67 treesize of output 1 [2021-11-13 18:36:23,401 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 18:36:23,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:36:23,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5025284] [2021-11-13 18:36:23,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5025284] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:23,402 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:23,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-11-13 18:36:23,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38810565] [2021-11-13 18:36:23,402 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:23,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:36:23,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:36:23,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:36:23,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=211, Unknown=8, NotChecked=0, Total=272 [2021-11-13 18:36:23,404 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-11-13 18:36:23,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 549 transitions, 9453 flow. Second operand has 17 states, 17 states have (on average 70.23529411764706) internal successors, (1194), 17 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 18:36:23,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:36:23,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-11-13 18:36:23,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:36:24,573 INFO L129 PetriNetUnfolder]: 494/1748 cut-off events. [2021-11-13 18:36:24,573 INFO L130 PetriNetUnfolder]: For 26173/26273 co-relation queries the response was YES. [2021-11-13 18:36:24,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11785 conditions, 1748 events. 494/1748 cut-off events. For 26173/26273 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 13195 event pairs, 43 based on Foata normal form. 17/1750 useless extension candidates. Maximal degree in co-relation 11645. Up to 864 conditions per place. [2021-11-13 18:36:24,596 INFO L132 encePairwiseOnDemand]: 94/116 looper letters, 357 selfloop transitions, 183 changer transitions 1/603 dead transitions. [2021-11-13 18:36:24,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 603 transitions, 11684 flow [2021-11-13 18:36:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:36:24,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-13 18:36:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1259 transitions. [2021-11-13 18:36:24,600 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6384381338742393 [2021-11-13 18:36:24,600 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1259 transitions. [2021-11-13 18:36:24,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1259 transitions. [2021-11-13 18:36:24,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:36:24,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1259 transitions. [2021-11-13 18:36:24,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 74.05882352941177) internal successors, (1259), 17 states have internal predecessors, (1259), 0 states have call successors, (0), 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 18:36:24,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 116.0) internal successors, (2088), 18 states have internal predecessors, (2088), 0 states have call successors, (0), 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 18:36:24,607 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 116.0) internal successors, (2088), 18 states have internal predecessors, (2088), 0 states have call successors, (0), 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 18:36:24,607 INFO L186 Difference]: Start difference. First operand has 281 places, 549 transitions, 9453 flow. Second operand 17 states and 1259 transitions. [2021-11-13 18:36:24,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 603 transitions, 11684 flow [2021-11-13 18:36:24,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 603 transitions, 11606 flow, removed 34 selfloop flow, removed 5 redundant places. [2021-11-13 18:36:25,016 INFO L242 Difference]: Finished difference. Result has 299 places, 568 transitions, 10364 flow [2021-11-13 18:36:25,017 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=9379, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10364, PETRI_PLACES=299, PETRI_TRANSITIONS=568} [2021-11-13 18:36:25,017 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 180 predicate places. [2021-11-13 18:36:25,017 INFO L470 AbstractCegarLoop]: Abstraction has has 299 places, 568 transitions, 10364 flow [2021-11-13 18:36:25,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 70.23529411764706) internal successors, (1194), 17 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 18:36:25,018 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:36:25,018 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 18:36:25,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 18:36:25,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:36:25,231 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:36:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:25,232 INFO L85 PathProgramCache]: Analyzing trace with hash -813502285, now seen corresponding path program 3 times [2021-11-13 18:36:25,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:36:25,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023762594] [2021-11-13 18:36:25,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:36:25,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:36:25,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:36:25,234 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:36:25,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 18:36:25,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-13 18:36:25,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:36:25,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:36:25,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:36:25,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:36:25,445 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:36:25,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:36:25,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:36:25,612 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:36:25,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-13 18:36:25,719 INFO L354 Elim1Store]: treesize reduction 58, result has 28.4 percent of original size [2021-11-13 18:36:25,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 58 [2021-11-13 18:36:25,888 INFO L354 Elim1Store]: treesize reduction 101, result has 24.6 percent of original size [2021-11-13 18:36:25,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 95 [2021-11-13 18:36:26,142 INFO L354 Elim1Store]: treesize reduction 160, result has 22.0 percent of original size [2021-11-13 18:36:26,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 106 treesize of output 126 [2021-11-13 18:36:26,379 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 18:36:26,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:36:47,204 INFO L354 Elim1Store]: treesize reduction 82, result has 26.8 percent of original size [2021-11-13 18:36:47,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 60 [2021-11-13 18:36:47,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2021-11-13 18:36:47,226 INFO L354 Elim1Store]: treesize reduction 47, result has 2.1 percent of original size [2021-11-13 18:36:47,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 1 [2021-11-13 18:36:47,451 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 18:36:47,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:36:47,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023762594] [2021-11-13 18:36:47,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023762594] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:47,452 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:47,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-11-13 18:36:47,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297093997] [2021-11-13 18:36:47,452 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:47,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:36:47,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:36:47,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:36:47,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=216, Unknown=4, NotChecked=0, Total=272 [2021-11-13 18:36:47,455 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-11-13 18:36:47,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 568 transitions, 10364 flow. Second operand has 17 states, 17 states have (on average 70.23529411764706) internal successors, (1194), 17 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 18:36:47,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:36:47,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-11-13 18:36:47,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:36:48,897 INFO L129 PetriNetUnfolder]: 505/1790 cut-off events. [2021-11-13 18:36:48,898 INFO L130 PetriNetUnfolder]: For 28462/28564 co-relation queries the response was YES. [2021-11-13 18:36:48,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12564 conditions, 1790 events. 505/1790 cut-off events. For 28462/28564 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 13637 event pairs, 40 based on Foata normal form. 22/1796 useless extension candidates. Maximal degree in co-relation 12415. Up to 865 conditions per place. [2021-11-13 18:36:48,939 INFO L132 encePairwiseOnDemand]: 96/116 looper letters, 365 selfloop transitions, 180 changer transitions 8/615 dead transitions. [2021-11-13 18:36:48,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 615 transitions, 12538 flow [2021-11-13 18:36:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:36:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-13 18:36:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1257 transitions. [2021-11-13 18:36:48,943 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6374239350912779 [2021-11-13 18:36:48,943 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1257 transitions. [2021-11-13 18:36:48,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1257 transitions. [2021-11-13 18:36:48,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:36:48,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1257 transitions. [2021-11-13 18:36:48,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.94117647058823) internal successors, (1257), 17 states have internal predecessors, (1257), 0 states have call successors, (0), 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 18:36:48,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 116.0) internal successors, (2088), 18 states have internal predecessors, (2088), 0 states have call successors, (0), 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 18:36:48,950 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 116.0) internal successors, (2088), 18 states have internal predecessors, (2088), 0 states have call successors, (0), 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 18:36:48,950 INFO L186 Difference]: Start difference. First operand has 299 places, 568 transitions, 10364 flow. Second operand 17 states and 1257 transitions. [2021-11-13 18:36:48,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 615 transitions, 12538 flow [2021-11-13 18:36:49,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 615 transitions, 12486 flow, removed 13 selfloop flow, removed 7 redundant places. [2021-11-13 18:36:49,327 INFO L242 Difference]: Finished difference. Result has 314 places, 578 transitions, 10990 flow [2021-11-13 18:36:49,327 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=10314, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10990, PETRI_PLACES=314, PETRI_TRANSITIONS=578} [2021-11-13 18:36:49,328 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 195 predicate places. [2021-11-13 18:36:49,328 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 578 transitions, 10990 flow [2021-11-13 18:36:49,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 70.23529411764706) internal successors, (1194), 17 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 18:36:49,329 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:36:49,329 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 18:36:49,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 18:36:49,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:36:49,547 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:36:49,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:49,547 INFO L85 PathProgramCache]: Analyzing trace with hash -822439585, now seen corresponding path program 4 times [2021-11-13 18:36:49,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:36:49,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430055286] [2021-11-13 18:36:49,548 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:36:49,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:36:49,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:36:49,548 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:36:49,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 18:36:49,632 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:36:49,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:36:49,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:36:49,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:36:49,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:36:49,732 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:36:49,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-13 18:36:49,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:36:49,934 INFO L354 Elim1Store]: treesize reduction 22, result has 31.3 percent of original size [2021-11-13 18:36:49,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-13 18:36:50,045 INFO L354 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2021-11-13 18:36:50,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 53 [2021-11-13 18:36:50,208 INFO L354 Elim1Store]: treesize reduction 101, result has 24.6 percent of original size [2021-11-13 18:36:50,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 77 [2021-11-13 18:36:50,497 INFO L354 Elim1Store]: treesize reduction 160, result has 22.0 percent of original size [2021-11-13 18:36:50,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 114 [2021-11-13 18:36:50,724 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 18:36:50,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:37:05,668 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-13 18:37:05,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 56 [2021-11-13 18:37:05,678 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:37:05,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 52 [2021-11-13 18:37:05,838 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 18:37:05,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:37:05,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430055286] [2021-11-13 18:37:05,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430055286] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:05,839 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:05,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-11-13 18:37:05,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143832632] [2021-11-13 18:37:05,839 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:05,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:37:05,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:37:05,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:37:05,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=207, Unknown=8, NotChecked=0, Total=272 [2021-11-13 18:37:05,842 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-11-13 18:37:05,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 578 transitions, 10990 flow. Second operand has 17 states, 17 states have (on average 70.23529411764706) internal successors, (1194), 17 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 18:37:05,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:37:05,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-11-13 18:37:05,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:37:07,401 INFO L129 PetriNetUnfolder]: 502/1805 cut-off events. [2021-11-13 18:37:07,401 INFO L130 PetriNetUnfolder]: For 30168/30290 co-relation queries the response was YES. [2021-11-13 18:37:07,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12994 conditions, 1805 events. 502/1805 cut-off events. For 30168/30290 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 13747 event pairs, 31 based on Foata normal form. 22/1807 useless extension candidates. Maximal degree in co-relation 12838. Up to 927 conditions per place. [2021-11-13 18:37:07,424 INFO L132 encePairwiseOnDemand]: 94/116 looper letters, 394 selfloop transitions, 170 changer transitions 8/634 dead transitions. [2021-11-13 18:37:07,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 634 transitions, 13282 flow [2021-11-13 18:37:07,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 18:37:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-11-13 18:37:07,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1402 transitions. [2021-11-13 18:37:07,427 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6361161524500908 [2021-11-13 18:37:07,427 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1402 transitions. [2021-11-13 18:37:07,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1402 transitions. [2021-11-13 18:37:07,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:37:07,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1402 transitions. [2021-11-13 18:37:07,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 73.78947368421052) internal successors, (1402), 19 states have internal predecessors, (1402), 0 states have call successors, (0), 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 18:37:07,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 116.0) internal successors, (2320), 20 states have internal predecessors, (2320), 0 states have call successors, (0), 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 18:37:07,435 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 116.0) internal successors, (2320), 20 states have internal predecessors, (2320), 0 states have call successors, (0), 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 18:37:07,436 INFO L186 Difference]: Start difference. First operand has 314 places, 578 transitions, 10990 flow. Second operand 19 states and 1402 transitions. [2021-11-13 18:37:07,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 634 transitions, 13282 flow [2021-11-13 18:37:07,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 634 transitions, 13169 flow, removed 43 selfloop flow, removed 7 redundant places. [2021-11-13 18:37:07,806 INFO L242 Difference]: Finished difference. Result has 332 places, 603 transitions, 11941 flow [2021-11-13 18:37:07,807 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=10882, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11941, PETRI_PLACES=332, PETRI_TRANSITIONS=603} [2021-11-13 18:37:07,808 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 213 predicate places. [2021-11-13 18:37:07,808 INFO L470 AbstractCegarLoop]: Abstraction has has 332 places, 603 transitions, 11941 flow [2021-11-13 18:37:07,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 70.23529411764706) internal successors, (1194), 17 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 18:37:07,809 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:37:07,809 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 18:37:07,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-13 18:37:08,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:37:08,017 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:37:08,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:08,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1870094069, now seen corresponding path program 5 times [2021-11-13 18:37:08,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:37:08,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27215693] [2021-11-13 18:37:08,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:37:08,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:37:08,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:37:08,019 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:37:08,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-13 18:37:08,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:37:08,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:37:08,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:37:08,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:37:08,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:37:08,259 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:37:08,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:37:08,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:37:08,434 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:37:08,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-13 18:37:08,554 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:37:08,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 58 [2021-11-13 18:37:08,707 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:37:08,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 104 [2021-11-13 18:37:08,953 INFO L354 Elim1Store]: treesize reduction 168, result has 21.9 percent of original size [2021-11-13 18:37:08,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 129 treesize of output 149 [2021-11-13 18:37:09,175 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 18:37:09,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:37:50,195 WARN L227 SmtUtils]: Spent 12.07s on a formula simplification. DAG size of input: 54 DAG size of output: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:38:04,314 WARN L227 SmtUtils]: Spent 7.68s on a formula simplification. DAG size of input: 52 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:38:04,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:38:04,484 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 18:38:04,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:38:04,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27215693] [2021-11-13 18:38:04,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27215693] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:38:04,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:38:04,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-11-13 18:38:04,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661646601] [2021-11-13 18:38:04,485 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:38:04,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:38:04,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:38:04,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:38:04,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=201, Unknown=11, NotChecked=0, Total=272 [2021-11-13 18:38:04,486 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-11-13 18:38:04,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 603 transitions, 11941 flow. Second operand has 17 states, 17 states have (on average 70.29411764705883) internal successors, (1195), 17 states have internal predecessors, (1195), 0 states have call successors, (0), 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 18:38:04,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:38:04,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-11-13 18:38:04,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:38:05,304 INFO L129 PetriNetUnfolder]: 503/1781 cut-off events. [2021-11-13 18:38:05,304 INFO L130 PetriNetUnfolder]: For 32087/32189 co-relation queries the response was YES. [2021-11-13 18:38:05,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13471 conditions, 1781 events. 503/1781 cut-off events. For 32087/32189 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13487 event pairs, 44 based on Foata normal form. 21/1785 useless extension candidates. Maximal degree in co-relation 13307. Up to 943 conditions per place. [2021-11-13 18:38:05,325 INFO L132 encePairwiseOnDemand]: 99/116 looper letters, 493 selfloop transitions, 87 changer transitions 0/642 dead transitions. [2021-11-13 18:38:05,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 642 transitions, 14024 flow [2021-11-13 18:38:05,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:38:05,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-13 18:38:05,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1165 transitions. [2021-11-13 18:38:05,328 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6276939655172413 [2021-11-13 18:38:05,328 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1165 transitions. [2021-11-13 18:38:05,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1165 transitions. [2021-11-13 18:38:05,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:38:05,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1165 transitions. [2021-11-13 18:38:05,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.8125) internal successors, (1165), 16 states have internal predecessors, (1165), 0 states have call successors, (0), 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 18:38:05,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 116.0) internal successors, (1972), 17 states have internal predecessors, (1972), 0 states have call successors, (0), 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 18:38:05,333 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 116.0) internal successors, (1972), 17 states have internal predecessors, (1972), 0 states have call successors, (0), 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 18:38:05,333 INFO L186 Difference]: Start difference. First operand has 332 places, 603 transitions, 11941 flow. Second operand 16 states and 1165 transitions. [2021-11-13 18:38:05,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 642 transitions, 14024 flow [2021-11-13 18:38:05,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 642 transitions, 13871 flow, removed 70 selfloop flow, removed 7 redundant places. [2021-11-13 18:38:05,797 INFO L242 Difference]: Finished difference. Result has 344 places, 612 transitions, 12186 flow [2021-11-13 18:38:05,797 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=11800, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=12186, PETRI_PLACES=344, PETRI_TRANSITIONS=612} [2021-11-13 18:38:05,798 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 225 predicate places. [2021-11-13 18:38:05,798 INFO L470 AbstractCegarLoop]: Abstraction has has 344 places, 612 transitions, 12186 flow [2021-11-13 18:38:05,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 70.29411764705883) internal successors, (1195), 17 states have internal predecessors, (1195), 0 states have call successors, (0), 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 18:38:05,799 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:38:05,799 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 18:38:05,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-13 18:38:06,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:38:06,012 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:38:06,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:38:06,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1578362219, now seen corresponding path program 6 times [2021-11-13 18:38:06,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:38:06,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953755430] [2021-11-13 18:38:06,013 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 18:38:06,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:38:06,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:38:06,014 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:38:06,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 18:38:06,134 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-11-13 18:38:06,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:38:06,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:38:06,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:38:06,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:38:06,232 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:38:06,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:38:06,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:38:06,382 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:38:06,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-13 18:38:06,457 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:38:06,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 60 [2021-11-13 18:38:06,726 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:38:06,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 102 [2021-11-13 18:38:06,954 INFO L354 Elim1Store]: treesize reduction 168, result has 21.9 percent of original size [2021-11-13 18:38:06,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 129 treesize of output 149 [2021-11-13 18:38:07,129 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 18:38:07,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:38:15,451 WARN L227 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:38:48,534 WARN L227 SmtUtils]: Spent 11.96s on a formula simplification. DAG size of input: 57 DAG size of output: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:39:02,894 WARN L227 SmtUtils]: Spent 8.05s on a formula simplification. DAG size of input: 51 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:39:02,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:39:03,094 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 18:39:03,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:03,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953755430] [2021-11-13 18:39:03,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953755430] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:03,094 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:03,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-11-13 18:39:03,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433759780] [2021-11-13 18:39:03,095 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:03,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:39:03,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:03,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:39:03,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=200, Unknown=12, NotChecked=0, Total=272 [2021-11-13 18:39:03,097 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-11-13 18:39:03,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 612 transitions, 12186 flow. Second operand has 17 states, 17 states have (on average 70.29411764705883) internal successors, (1195), 17 states have internal predecessors, (1195), 0 states have call successors, (0), 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 18:39:03,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:39:03,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-11-13 18:39:03,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:39:04,413 INFO L129 PetriNetUnfolder]: 515/1820 cut-off events. [2021-11-13 18:39:04,414 INFO L130 PetriNetUnfolder]: For 34221/34323 co-relation queries the response was YES. [2021-11-13 18:39:04,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13908 conditions, 1820 events. 515/1820 cut-off events. For 34221/34323 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 13887 event pairs, 47 based on Foata normal form. 35/1841 useless extension candidates. Maximal degree in co-relation 13739. Up to 924 conditions per place. [2021-11-13 18:39:04,434 INFO L132 encePairwiseOnDemand]: 95/116 looper letters, 375 selfloop transitions, 214 changer transitions 18/669 dead transitions. [2021-11-13 18:39:04,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 669 transitions, 14727 flow [2021-11-13 18:39:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:39:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-13 18:39:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1253 transitions. [2021-11-13 18:39:04,436 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6353955375253549 [2021-11-13 18:39:04,436 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1253 transitions. [2021-11-13 18:39:04,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1253 transitions. [2021-11-13 18:39:04,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:39:04,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1253 transitions. [2021-11-13 18:39:04,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.70588235294117) internal successors, (1253), 17 states have internal predecessors, (1253), 0 states have call successors, (0), 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 18:39:04,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 116.0) internal successors, (2088), 18 states have internal predecessors, (2088), 0 states have call successors, (0), 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 18:39:04,442 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 116.0) internal successors, (2088), 18 states have internal predecessors, (2088), 0 states have call successors, (0), 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 18:39:04,443 INFO L186 Difference]: Start difference. First operand has 344 places, 612 transitions, 12186 flow. Second operand 17 states and 1253 transitions. [2021-11-13 18:39:04,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 669 transitions, 14727 flow [2021-11-13 18:39:04,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 669 transitions, 14616 flow, removed 13 selfloop flow, removed 7 redundant places. [2021-11-13 18:39:04,849 INFO L242 Difference]: Finished difference. Result has 357 places, 633 transitions, 13212 flow [2021-11-13 18:39:04,849 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=12079, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=13212, PETRI_PLACES=357, PETRI_TRANSITIONS=633} [2021-11-13 18:39:04,850 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 238 predicate places. [2021-11-13 18:39:04,850 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 633 transitions, 13212 flow [2021-11-13 18:39:04,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 70.29411764705883) internal successors, (1195), 17 states have internal predecessors, (1195), 0 states have call successors, (0), 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 18:39:04,850 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:39:04,851 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 18:39:04,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:05,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:05,051 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:39:05,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:05,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1902402365, now seen corresponding path program 7 times [2021-11-13 18:39:05,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:05,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706877015] [2021-11-13 18:39:05,052 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 18:39:05,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:05,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:05,053 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:05,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-13 18:39:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:05,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:39:05,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:05,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:39:05,233 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:39:05,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-13 18:39:05,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:39:05,422 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:39:05,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-13 18:39:05,517 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:39:05,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 58 [2021-11-13 18:39:05,682 INFO L354 Elim1Store]: treesize reduction 107, result has 24.6 percent of original size [2021-11-13 18:39:05,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 102 [2021-11-13 18:39:05,960 INFO L354 Elim1Store]: treesize reduction 160, result has 22.0 percent of original size [2021-11-13 18:39:05,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 123 treesize of output 143 [2021-11-13 18:39:06,161 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 18:39:06,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:39,634 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 68 DAG size of output: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:39:41,034 INFO L354 Elim1Store]: treesize reduction 181, result has 19.6 percent of original size [2021-11-13 18:39:41,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 77 treesize of output 77 [2021-11-13 18:39:41,065 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:39:41,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 71 [2021-11-13 18:39:41,087 INFO L354 Elim1Store]: treesize reduction 110, result has 0.9 percent of original size [2021-11-13 18:39:41,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 69 treesize of output 1 [2021-11-13 18:39:41,242 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 18:39:41,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:41,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706877015] [2021-11-13 18:39:41,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706877015] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:41,242 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:41,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-11-13 18:39:41,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803551128] [2021-11-13 18:39:41,243 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:41,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:39:41,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:41,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:39:41,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=210, Unknown=9, NotChecked=0, Total=272 [2021-11-13 18:39:41,245 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-11-13 18:39:41,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 633 transitions, 13212 flow. Second operand has 17 states, 17 states have (on average 70.29411764705883) internal successors, (1195), 17 states have internal predecessors, (1195), 0 states have call successors, (0), 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 18:39:41,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:39:41,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-11-13 18:39:41,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:39:42,460 INFO L129 PetriNetUnfolder]: 509/1811 cut-off events. [2021-11-13 18:39:42,461 INFO L130 PetriNetUnfolder]: For 35956/36055 co-relation queries the response was YES. [2021-11-13 18:39:42,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14275 conditions, 1811 events. 509/1811 cut-off events. For 35956/36055 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 13843 event pairs, 48 based on Foata normal form. 34/1831 useless extension candidates. Maximal degree in co-relation 14101. Up to 893 conditions per place. [2021-11-13 18:39:42,484 INFO L132 encePairwiseOnDemand]: 94/116 looper letters, 362 selfloop transitions, 232 changer transitions 8/664 dead transitions. [2021-11-13 18:39:42,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 664 transitions, 15171 flow [2021-11-13 18:39:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:39:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-13 18:39:42,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1184 transitions. [2021-11-13 18:39:42,486 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2021-11-13 18:39:42,486 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1184 transitions. [2021-11-13 18:39:42,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1184 transitions. [2021-11-13 18:39:42,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:39:42,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1184 transitions. [2021-11-13 18:39:42,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 74.0) internal successors, (1184), 16 states have internal predecessors, (1184), 0 states have call successors, (0), 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 18:39:42,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 116.0) internal successors, (1972), 17 states have internal predecessors, (1972), 0 states have call successors, (0), 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 18:39:42,491 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 116.0) internal successors, (1972), 17 states have internal predecessors, (1972), 0 states have call successors, (0), 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 18:39:42,491 INFO L186 Difference]: Start difference. First operand has 357 places, 633 transitions, 13212 flow. Second operand 16 states and 1184 transitions. [2021-11-13 18:39:42,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 664 transitions, 15171 flow [2021-11-13 18:39:42,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 664 transitions, 14908 flow, removed 100 selfloop flow, removed 10 redundant places. [2021-11-13 18:39:42,946 INFO L242 Difference]: Finished difference. Result has 364 places, 637 transitions, 13648 flow [2021-11-13 18:39:42,947 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=12958, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=13648, PETRI_PLACES=364, PETRI_TRANSITIONS=637} [2021-11-13 18:39:42,948 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 245 predicate places. [2021-11-13 18:39:42,948 INFO L470 AbstractCegarLoop]: Abstraction has has 364 places, 637 transitions, 13648 flow [2021-11-13 18:39:42,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 70.29411764705883) internal successors, (1195), 17 states have internal predecessors, (1195), 0 states have call successors, (0), 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 18:39:42,949 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:39:42,949 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 18:39:42,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:43,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:43,149 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:39:43,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:43,150 INFO L85 PathProgramCache]: Analyzing trace with hash -717412909, now seen corresponding path program 8 times [2021-11-13 18:39:43,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:43,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80307775] [2021-11-13 18:39:43,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:39:43,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:43,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:43,151 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:43,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-13 18:39:43,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:39:43,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:39:43,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:39:43,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:43,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:39:43,383 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:39:43,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:39:43,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:39:43,557 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:39:43,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-13 18:39:43,643 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:39:43,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 58 [2021-11-13 18:39:43,784 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:39:43,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 89 [2021-11-13 18:39:44,110 INFO L354 Elim1Store]: treesize reduction 168, result has 21.9 percent of original size [2021-11-13 18:39:44,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 114 treesize of output 134 [2021-11-13 18:39:44,316 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 18:39:44,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:56,511 WARN L227 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:40:29,643 WARN L227 SmtUtils]: Spent 12.07s on a formula simplification. DAG size of input: 64 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:40:42,367 WARN L227 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 62 DAG size of output: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:40:42,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:40:42,609 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 18:40:42,609 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:40:42,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80307775] [2021-11-13 18:40:42,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80307775] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:40:42,610 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:40:42,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-11-13 18:40:42,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198660368] [2021-11-13 18:40:42,610 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:40:42,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:40:42,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:40:42,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:40:42,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=199, Unknown=13, NotChecked=0, Total=272 [2021-11-13 18:40:42,613 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-11-13 18:40:42,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 637 transitions, 13648 flow. Second operand has 17 states, 17 states have (on average 70.29411764705883) internal successors, (1195), 17 states have internal predecessors, (1195), 0 states have call successors, (0), 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 18:40:42,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:40:42,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-11-13 18:40:42,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:40:43,825 INFO L129 PetriNetUnfolder]: 504/1802 cut-off events. [2021-11-13 18:40:43,825 INFO L130 PetriNetUnfolder]: For 35731/35836 co-relation queries the response was YES. [2021-11-13 18:40:43,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14319 conditions, 1802 events. 504/1802 cut-off events. For 35731/35836 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 13742 event pairs, 45 based on Foata normal form. 24/1814 useless extension candidates. Maximal degree in co-relation 14142. Up to 969 conditions per place. [2021-11-13 18:40:43,851 INFO L132 encePairwiseOnDemand]: 99/116 looper letters, 514 selfloop transitions, 79 changer transitions 0/655 dead transitions. [2021-11-13 18:40:43,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 655 transitions, 15284 flow [2021-11-13 18:40:43,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:40:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-13 18:40:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1091 transitions. [2021-11-13 18:40:43,853 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6270114942528736 [2021-11-13 18:40:43,853 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1091 transitions. [2021-11-13 18:40:43,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1091 transitions. [2021-11-13 18:40:43,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:40:43,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1091 transitions. [2021-11-13 18:40:43,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 72.73333333333333) internal successors, (1091), 15 states have internal predecessors, (1091), 0 states have call successors, (0), 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 18:40:43,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 116.0) internal successors, (1856), 16 states have internal predecessors, (1856), 0 states have call successors, (0), 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 18:40:43,857 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 116.0) internal successors, (1856), 16 states have internal predecessors, (1856), 0 states have call successors, (0), 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 18:40:43,857 INFO L186 Difference]: Start difference. First operand has 364 places, 637 transitions, 13648 flow. Second operand 15 states and 1091 transitions. [2021-11-13 18:40:43,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 655 transitions, 15284 flow [2021-11-13 18:40:44,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 655 transitions, 15166 flow, removed 29 selfloop flow, removed 8 redundant places. [2021-11-13 18:40:44,364 INFO L242 Difference]: Finished difference. Result has 371 places, 637 transitions, 13718 flow [2021-11-13 18:40:44,365 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=13527, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=13718, PETRI_PLACES=371, PETRI_TRANSITIONS=637} [2021-11-13 18:40:44,365 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 252 predicate places. [2021-11-13 18:40:44,366 INFO L470 AbstractCegarLoop]: Abstraction has has 371 places, 637 transitions, 13718 flow [2021-11-13 18:40:44,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 70.29411764705883) internal successors, (1195), 17 states have internal predecessors, (1195), 0 states have call successors, (0), 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 18:40:44,366 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:40:44,366 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 18:40:44,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-13 18:40:44,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:40:44,567 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:40:44,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:40:44,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1578373379, now seen corresponding path program 9 times [2021-11-13 18:40:44,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:40:44,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892190822] [2021-11-13 18:40:44,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:40:44,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:40:44,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:40:44,568 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:40:44,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-13 18:40:44,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-13 18:40:44,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:40:44,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:40:44,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:40:44,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:40:44,828 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:40:44,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:40:44,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:40:45,023 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:40:45,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-13 18:40:45,119 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:40:45,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 56 [2021-11-13 18:40:45,408 INFO L354 Elim1Store]: treesize reduction 107, result has 24.6 percent of original size [2021-11-13 18:40:45,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 96 [2021-11-13 18:40:45,722 INFO L354 Elim1Store]: treesize reduction 160, result has 22.0 percent of original size [2021-11-13 18:40:45,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 132 treesize of output 152 [2021-11-13 18:40:45,966 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 18:40:45,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:41:00,903 WARN L227 SmtUtils]: Spent 8.65s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:41:27,143 WARN L227 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 66 DAG size of output: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:41:27,254 INFO L354 Elim1Store]: treesize reduction 181, result has 19.6 percent of original size [2021-11-13 18:41:27,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 75 [2021-11-13 18:41:27,278 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:41:27,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 71 [2021-11-13 18:41:27,298 INFO L354 Elim1Store]: treesize reduction 110, result has 0.9 percent of original size [2021-11-13 18:41:27,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 69 treesize of output 1 [2021-11-13 18:41:27,483 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 18:41:27,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:41:27,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892190822] [2021-11-13 18:41:27,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892190822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:41:27,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:41:27,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-11-13 18:41:27,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619951268] [2021-11-13 18:41:27,485 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:41:27,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:41:27,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:41:27,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:41:27,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=209, Unknown=10, NotChecked=0, Total=272 [2021-11-13 18:41:27,488 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 116 [2021-11-13 18:41:27,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 637 transitions, 13718 flow. Second operand has 17 states, 17 states have (on average 70.29411764705883) internal successors, (1195), 17 states have internal predecessors, (1195), 0 states have call successors, (0), 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 18:41:27,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-13 18:41:27,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 116 [2021-11-13 18:41:27,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-13 18:41:28,929 INFO L129 PetriNetUnfolder]: 503/1794 cut-off events. [2021-11-13 18:41:28,929 INFO L130 PetriNetUnfolder]: For 35847/35952 co-relation queries the response was YES. [2021-11-13 18:41:28,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14330 conditions, 1794 events. 503/1794 cut-off events. For 35847/35952 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 13707 event pairs, 46 based on Foata normal form. 38/1819 useless extension candidates. Maximal degree in co-relation 14151. Up to 882 conditions per place. [2021-11-13 18:41:28,954 INFO L132 encePairwiseOnDemand]: 95/116 looper letters, 362 selfloop transitions, 235 changer transitions 3/662 dead transitions. [2021-11-13 18:41:28,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 662 transitions, 15509 flow [2021-11-13 18:41:28,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:41:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-13 18:41:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1113 transitions. [2021-11-13 18:41:28,957 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6396551724137931 [2021-11-13 18:41:28,957 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1113 transitions. [2021-11-13 18:41:28,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1113 transitions. [2021-11-13 18:41:28,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:41:28,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1113 transitions. [2021-11-13 18:41:28,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 74.2) internal successors, (1113), 15 states have internal predecessors, (1113), 0 states have call successors, (0), 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 18:41:28,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 116.0) internal successors, (1856), 16 states have internal predecessors, (1856), 0 states have call successors, (0), 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 18:41:28,961 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 116.0) internal successors, (1856), 16 states have internal predecessors, (1856), 0 states have call successors, (0), 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 18:41:28,961 INFO L186 Difference]: Start difference. First operand has 371 places, 637 transitions, 13718 flow. Second operand 15 states and 1113 transitions. [2021-11-13 18:41:28,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 662 transitions, 15509 flow [2021-11-13 18:41:29,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 662 transitions, 15393 flow, removed 4 selfloop flow, removed 10 redundant places. [2021-11-13 18:41:29,452 INFO L242 Difference]: Finished difference. Result has 377 places, 640 transitions, 14190 flow [2021-11-13 18:41:29,453 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=13602, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14190, PETRI_PLACES=377, PETRI_TRANSITIONS=640} [2021-11-13 18:41:29,454 INFO L334 CegarLoopForPetriNet]: 119 programPoint places, 258 predicate places. [2021-11-13 18:41:29,454 INFO L470 AbstractCegarLoop]: Abstraction has has 377 places, 640 transitions, 14190 flow [2021-11-13 18:41:29,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 70.29411764705883) internal successors, (1195), 17 states have internal predecessors, (1195), 0 states have call successors, (0), 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 18:41:29,455 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-13 18:41:29,455 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] [2021-11-13 18:41:29,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-11-13 18:41:29,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:41:29,687 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2021-11-13 18:41:29,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:41:29,688 INFO L85 PathProgramCache]: Analyzing trace with hash -421495858, now seen corresponding path program 5 times [2021-11-13 18:41:29,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:41:29,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796759035] [2021-11-13 18:41:29,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:41:29,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:41:29,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:41:29,689 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:41:29,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a2c1ca-7fb0-401e-a3e1-4200794bcca1/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 18:41:29,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:41:29,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:41:29,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 18:41:29,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:41:29,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:41:29,877 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 18:41:29,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-13 18:41:30,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:41:30,060 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-13 18:41:30,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-13 18:41:30,137 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-13 18:41:30,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 38 [2021-11-13 18:41:30,255 INFO L354 Elim1Store]: treesize reduction 95, result has 26.9 percent of original size [2021-11-13 18:41:30,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 56 [2021-11-13 18:41:30,688 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 18:41:30,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 73 [2021-11-13 18:41:30,913 INFO L354 Elim1Store]: treesize reduction 255, result has 18.3 percent of original size [2021-11-13 18:41:30,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 114 [2021-11-13 18:41:37,133 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 18:41:37,133 INFO L328 TraceCheckSpWp]: Computing backward predicates...