./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa --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 8259c4061eb15e4ed63bc06f98acbb6dc3f9862bbe262b5cabdd3ad4658d3239 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:00:06,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:00:06,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:00:06,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:00:06,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:00:06,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:00:06,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:00:06,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:00:06,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:00:06,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:00:06,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:00:06,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:00:06,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:00:06,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:00:06,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:00:06,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:00:06,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:00:06,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:00:06,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:00:06,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:00:06,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:00:06,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:00:06,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:00:06,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:00:06,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:00:06,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:00:06,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:00:06,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:00:06,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:00:06,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:00:06,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:00:06,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:00:06,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:00:06,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:00:06,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:00:06,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:00:06,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:00:06,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:00:06,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:00:06,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:00:06,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:00:06,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/config/svcomp-DataRace-32bit-Automizer_Default.epf [2021-12-06 21:00:06,980 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:00:06,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:00:06,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:00:06,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:00:06,982 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:00:06,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:00:06,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:00:06,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:00:06,983 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:00:06,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:00:06,983 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 21:00:06,983 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 21:00:06,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:00:06,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 21:00:06,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:00:06,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 21:00:06,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:00:06,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 21:00:06,984 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-12-06 21:00:06,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 21:00:06,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 21:00:06,985 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:00:06,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 21:00:06,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:00:06,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:00:06,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:00:06,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:00:06,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:00:06,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:00:06,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 21:00:06,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:00:06,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:00:06,986 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 21:00:06,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 21:00:06,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 21:00:06,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:00:06,987 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_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8259c4061eb15e4ed63bc06f98acbb6dc3f9862bbe262b5cabdd3ad4658d3239 [2021-12-06 21:00:07,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:00:07,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:00:07,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:00:07,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:00:07,194 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:00:07,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i [2021-12-06 21:00:07,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/data/994661638/8fd27efee4a348ed8e17c7e1b4a2f34f/FLAGc478258fd [2021-12-06 21:00:07,672 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:00:07,673 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i [2021-12-06 21:00:07,688 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/data/994661638/8fd27efee4a348ed8e17c7e1b4a2f34f/FLAGc478258fd [2021-12-06 21:00:07,700 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/data/994661638/8fd27efee4a348ed8e17c7e1b4a2f34f [2021-12-06 21:00:07,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:00:07,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:00:07,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:00:07,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:00:07,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:00:07,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:00:07" (1/1) ... [2021-12-06 21:00:07,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bac350f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:07, skipping insertion in model container [2021-12-06 21:00:07,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:00:07" (1/1) ... [2021-12-06 21:00:07,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:00:07,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:00:08,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:00:08,060 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:00:08,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:00:08,130 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:00:08,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:08 WrapperNode [2021-12-06 21:00:08,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:00:08,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:00:08,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:00:08,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:00:08,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:08" (1/1) ... [2021-12-06 21:00:08,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:08" (1/1) ... [2021-12-06 21:00:08,179 INFO L137 Inliner]: procedures = 262, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 112 [2021-12-06 21:00:08,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:00:08,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:00:08,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:00:08,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:00:08,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:08" (1/1) ... [2021-12-06 21:00:08,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:08" (1/1) ... [2021-12-06 21:00:08,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:08" (1/1) ... [2021-12-06 21:00:08,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:08" (1/1) ... [2021-12-06 21:00:08,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:08" (1/1) ... [2021-12-06 21:00:08,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:08" (1/1) ... [2021-12-06 21:00:08,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:08" (1/1) ... [2021-12-06 21:00:08,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:00:08,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:00:08,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:00:08,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:00:08,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:08" (1/1) ... [2021-12-06 21:00:08,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:00:08,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:08,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:00:08,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:00:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 21:00:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 21:00:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 21:00:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 21:00:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-06 21:00:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:00:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-12-06 21:00:08,261 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-12-06 21:00:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:00:08,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:00:08,262 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 21:00:08,342 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:00:08,344 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:00:08,544 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:00:08,552 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:00:08,552 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 21:00:08,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:00:08 BoogieIcfgContainer [2021-12-06 21:00:08,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:00:08,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:00:08,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:00:08,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:00:08,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:00:07" (1/3) ... [2021-12-06 21:00:08,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550f4125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:00:08, skipping insertion in model container [2021-12-06 21:00:08,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:00:08" (2/3) ... [2021-12-06 21:00:08,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550f4125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:00:08, skipping insertion in model container [2021-12-06 21:00:08,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:00:08" (3/3) ... [2021-12-06 21:00:08,562 INFO L111 eAbstractionObserver]: Analyzing ICFG 06-symbeq_03-funloop_simple.i [2021-12-06 21:00:08,567 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 21:00:08,567 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:00:08,567 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-06 21:00:08,568 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 21:00:08,596 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,596 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,596 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,596 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,597 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,597 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,597 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,597 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,597 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,597 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,597 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,598 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,598 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,598 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,598 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,598 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,599 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,599 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,599 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,599 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,599 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,599 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,600 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,600 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,600 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,600 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,600 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,600 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,600 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,601 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,602 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,603 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,603 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,603 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,603 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,603 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,603 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,604 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,604 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,604 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,604 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,604 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,604 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,605 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,605 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,605 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,605 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,605 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,605 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,605 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,606 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,606 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,606 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,606 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,606 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,606 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,607 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,607 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,607 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,607 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,607 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,607 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,608 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,608 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,608 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,608 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,608 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,608 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,609 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,609 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,609 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,609 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,609 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,610 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,610 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,610 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,610 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,610 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,610 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,611 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,611 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,611 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,611 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,611 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,611 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,611 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,612 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,612 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,612 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,612 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,612 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,613 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,613 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,614 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,614 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,614 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,614 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,614 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,615 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,615 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,615 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,615 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,615 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,615 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,615 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,616 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,616 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,616 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,616 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,616 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,616 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,616 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,616 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,622 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,622 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,622 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,623 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,623 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,623 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,623 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,623 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,623 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,624 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,624 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,624 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,624 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,624 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,624 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,624 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,625 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,625 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,625 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,625 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,625 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,625 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,625 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,626 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,626 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,626 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,626 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,629 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,629 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,629 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,629 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,629 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,630 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,630 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,630 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,630 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,630 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,630 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,630 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,631 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,631 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 21:00:08,633 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 21:00:08,669 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:00:08,675 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 [2021-12-06 21:00:08,675 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-12-06 21:00:08,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 125 transitions, 255 flow [2021-12-06 21:00:08,720 INFO L129 PetriNetUnfolder]: 6/124 cut-off events. [2021-12-06 21:00:08,720 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 21:00:08,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 124 events. 6/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 218 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2021-12-06 21:00:08,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 125 transitions, 255 flow [2021-12-06 21:00:08,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 124 transitions, 251 flow [2021-12-06 21:00:08,738 INFO L129 PetriNetUnfolder]: 4/54 cut-off events. [2021-12-06 21:00:08,738 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 21:00:08,738 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:08,738 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] [2021-12-06 21:00:08,739 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:08,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash 397060765, now seen corresponding path program 1 times [2021-12-06 21:00:08,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:08,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8543378] [2021-12-06 21:00:08,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:08,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:08,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:08,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8543378] [2021-12-06 21:00:08,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8543378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:08,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:00:08,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 21:00:08,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852170470] [2021-12-06 21:00:08,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:08,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 21:00:08,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:08,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 21:00:08,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 21:00:08,902 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 125 [2021-12-06 21:00:08,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 124 transitions, 251 flow. Second operand has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:08,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:08,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 125 [2021-12-06 21:00:08,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:08,931 INFO L129 PetriNetUnfolder]: 3/121 cut-off events. [2021-12-06 21:00:08,932 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-06 21:00:08,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 121 events. 3/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 217 event pairs, 0 based on Foata normal form. 3/115 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2021-12-06 21:00:08,934 INFO L132 encePairwiseOnDemand]: 122/125 looper letters, 1 selfloop transitions, 0 changer transitions 0/121 dead transitions. [2021-12-06 21:00:08,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 121 transitions, 247 flow [2021-12-06 21:00:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 21:00:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-06 21:00:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 246 transitions. [2021-12-06 21:00:08,944 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.984 [2021-12-06 21:00:08,944 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 246 transitions. [2021-12-06 21:00:08,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 246 transitions. [2021-12-06 21:00:08,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:08,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 246 transitions. [2021-12-06 21:00:08,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:08,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:08,954 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:08,956 INFO L186 Difference]: Start difference. First operand has 122 places, 124 transitions, 251 flow. Second operand 2 states and 246 transitions. [2021-12-06 21:00:08,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 121 transitions, 247 flow [2021-12-06 21:00:08,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 121 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 21:00:08,962 INFO L242 Difference]: Finished difference. Result has 122 places, 121 transitions, 244 flow [2021-12-06 21:00:08,964 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=244, PETRI_PLACES=122, PETRI_TRANSITIONS=121} [2021-12-06 21:00:08,966 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 0 predicate places. [2021-12-06 21:00:08,966 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 121 transitions, 244 flow [2021-12-06 21:00:08,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:08,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:08,967 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] [2021-12-06 21:00:08,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 21:00:08,967 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:08,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1657093153, now seen corresponding path program 1 times [2021-12-06 21:00:08,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:08,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413120966] [2021-12-06 21:00:08,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:08,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:09,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:09,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413120966] [2021-12-06 21:00:09,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413120966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:09,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:00:09,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:00:09,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061962746] [2021-12-06 21:00:09,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:09,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:00:09,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:00:09,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:00:09,020 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 125 [2021-12-06 21:00:09,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 121 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:09,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 125 [2021-12-06 21:00:09,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:09,062 INFO L129 PetriNetUnfolder]: 3/125 cut-off events. [2021-12-06 21:00:09,062 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 21:00:09,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 3/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 215 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 139. Up to 9 conditions per place. [2021-12-06 21:00:09,065 INFO L132 encePairwiseOnDemand]: 122/125 looper letters, 10 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2021-12-06 21:00:09,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 125 transitions, 276 flow [2021-12-06 21:00:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:00:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:00:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2021-12-06 21:00:09,069 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9466666666666667 [2021-12-06 21:00:09,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2021-12-06 21:00:09,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2021-12-06 21:00:09,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:09,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2021-12-06 21:00:09,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,076 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,076 INFO L186 Difference]: Start difference. First operand has 122 places, 121 transitions, 244 flow. Second operand 3 states and 355 transitions. [2021-12-06 21:00:09,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 125 transitions, 276 flow [2021-12-06 21:00:09,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 125 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 21:00:09,082 INFO L242 Difference]: Finished difference. Result has 125 places, 122 transitions, 256 flow [2021-12-06 21:00:09,082 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2021-12-06 21:00:09,083 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 3 predicate places. [2021-12-06 21:00:09,083 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 256 flow [2021-12-06 21:00:09,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:09,084 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] [2021-12-06 21:00:09,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 21:00:09,084 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:09,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:09,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1891473138, now seen corresponding path program 1 times [2021-12-06 21:00:09,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:09,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985706857] [2021-12-06 21:00:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:09,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:09,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:09,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985706857] [2021-12-06 21:00:09,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985706857] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929141610] [2021-12-06 21:00:09,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:09,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:09,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:09,154 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:09,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 21:00:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:09,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 21:00:09,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 21:00:09,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:09,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929141610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:09,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:09,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-12-06 21:00:09,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795171415] [2021-12-06 21:00:09,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:09,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:00:09,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:09,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:00:09,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:00:09,275 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 125 [2021-12-06 21:00:09,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:09,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 125 [2021-12-06 21:00:09,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:09,310 INFO L129 PetriNetUnfolder]: 3/155 cut-off events. [2021-12-06 21:00:09,310 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-06 21:00:09,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 155 events. 3/155 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 160 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 175. Up to 10 conditions per place. [2021-12-06 21:00:09,312 INFO L132 encePairwiseOnDemand]: 122/125 looper letters, 11 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2021-12-06 21:00:09,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 290 flow [2021-12-06 21:00:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:00:09,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 21:00:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2021-12-06 21:00:09,314 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9413333333333334 [2021-12-06 21:00:09,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2021-12-06 21:00:09,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2021-12-06 21:00:09,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:09,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2021-12-06 21:00:09,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,317 INFO L186 Difference]: Start difference. First operand has 125 places, 122 transitions, 256 flow. Second operand 3 states and 353 transitions. [2021-12-06 21:00:09,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 290 flow [2021-12-06 21:00:09,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 126 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 21:00:09,320 INFO L242 Difference]: Finished difference. Result has 127 places, 123 transitions, 266 flow [2021-12-06 21:00:09,321 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=127, PETRI_TRANSITIONS=123} [2021-12-06 21:00:09,321 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 5 predicate places. [2021-12-06 21:00:09,322 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 123 transitions, 266 flow [2021-12-06 21:00:09,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,322 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:09,322 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] [2021-12-06 21:00:09,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:00:09,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:09,524 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:09,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:09,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1317859348, now seen corresponding path program 1 times [2021-12-06 21:00:09,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:09,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549946116] [2021-12-06 21:00:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:09,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:09,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:09,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549946116] [2021-12-06 21:00:09,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549946116] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:09,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783221288] [2021-12-06 21:00:09,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:09,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:09,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:09,658 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:09,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 21:00:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:09,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 21:00:09,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:09,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:00:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:09,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783221288] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:00:09,841 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:00:09,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-06 21:00:09,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415560919] [2021-12-06 21:00:09,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:00:09,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:00:09,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:09,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:00:09,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:00:09,845 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 125 [2021-12-06 21:00:09,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 123 transitions, 266 flow. Second operand has 10 states, 10 states have (on average 115.1) internal successors, (1151), 10 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:09,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 125 [2021-12-06 21:00:09,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:09,916 INFO L129 PetriNetUnfolder]: 3/162 cut-off events. [2021-12-06 21:00:09,916 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-06 21:00:09,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 162 events. 3/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 155 event pairs, 0 based on Foata normal form. 2/155 useless extension candidates. Maximal degree in co-relation 194. Up to 6 conditions per place. [2021-12-06 21:00:09,918 INFO L132 encePairwiseOnDemand]: 119/125 looper letters, 11 selfloop transitions, 9 changer transitions 0/133 dead transitions. [2021-12-06 21:00:09,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 133 transitions, 328 flow [2021-12-06 21:00:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:00:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 21:00:09,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1039 transitions. [2021-12-06 21:00:09,921 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9235555555555556 [2021-12-06 21:00:09,921 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1039 transitions. [2021-12-06 21:00:09,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1039 transitions. [2021-12-06 21:00:09,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:09,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1039 transitions. [2021-12-06 21:00:09,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.44444444444444) internal successors, (1039), 9 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 125.0) internal successors, (1250), 10 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,929 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 125.0) internal successors, (1250), 10 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,929 INFO L186 Difference]: Start difference. First operand has 127 places, 123 transitions, 266 flow. Second operand 9 states and 1039 transitions. [2021-12-06 21:00:09,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 133 transitions, 328 flow [2021-12-06 21:00:09,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 133 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 21:00:09,932 INFO L242 Difference]: Finished difference. Result has 137 places, 129 transitions, 314 flow [2021-12-06 21:00:09,933 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=314, PETRI_PLACES=137, PETRI_TRANSITIONS=129} [2021-12-06 21:00:09,933 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 15 predicate places. [2021-12-06 21:00:09,934 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 129 transitions, 314 flow [2021-12-06 21:00:09,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 115.1) internal successors, (1151), 10 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:09,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:09,935 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:09,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 21:00:10,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:10,135 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:10,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:10,136 INFO L85 PathProgramCache]: Analyzing trace with hash -626594124, now seen corresponding path program 2 times [2021-12-06 21:00:10,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:10,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468736398] [2021-12-06 21:00:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:10,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:10,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:10,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468736398] [2021-12-06 21:00:10,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468736398] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:10,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486118779] [2021-12-06 21:00:10,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:00:10,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:10,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:10,224 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:10,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 21:00:10,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 21:00:10,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:00:10,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 21:00:10,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:10,335 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 [2021-12-06 21:00:10,358 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 21:00:10,358 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 21 treesize of output 20 [2021-12-06 21:00:10,390 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-12-06 21:00:10,390 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 30 treesize of output 32 [2021-12-06 21:00:10,433 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-12-06 21:00:10,433 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 39 treesize of output 44 [2021-12-06 21:00:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 21:00:10,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:10,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486118779] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:10,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:10,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-12-06 21:00:10,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127902487] [2021-12-06 21:00:10,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:10,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:00:10,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:10,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:00:10,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:00:10,453 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 125 [2021-12-06 21:00:10,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 129 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:10,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:10,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 125 [2021-12-06 21:00:10,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:10,929 INFO L129 PetriNetUnfolder]: 779/2745 cut-off events. [2021-12-06 21:00:10,930 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-12-06 21:00:10,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4359 conditions, 2745 events. 779/2745 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 19587 event pairs, 424 based on Foata normal form. 0/2478 useless extension candidates. Maximal degree in co-relation 4351. Up to 1258 conditions per place. [2021-12-06 21:00:10,946 INFO L132 encePairwiseOnDemand]: 114/125 looper letters, 75 selfloop transitions, 22 changer transitions 0/183 dead transitions. [2021-12-06 21:00:10,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 183 transitions, 616 flow [2021-12-06 21:00:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:00:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-06 21:00:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 572 transitions. [2021-12-06 21:00:10,948 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626666666666667 [2021-12-06 21:00:10,948 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 572 transitions. [2021-12-06 21:00:10,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 572 transitions. [2021-12-06 21:00:10,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:10,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 572 transitions. [2021-12-06 21:00:10,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:10,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:10,953 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:10,953 INFO L186 Difference]: Start difference. First operand has 137 places, 129 transitions, 314 flow. Second operand 6 states and 572 transitions. [2021-12-06 21:00:10,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 183 transitions, 616 flow [2021-12-06 21:00:10,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 183 transitions, 610 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-06 21:00:10,958 INFO L242 Difference]: Finished difference. Result has 146 places, 150 transitions, 458 flow [2021-12-06 21:00:10,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=458, PETRI_PLACES=146, PETRI_TRANSITIONS=150} [2021-12-06 21:00:10,959 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 24 predicate places. [2021-12-06 21:00:10,959 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 150 transitions, 458 flow [2021-12-06 21:00:10,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:10,960 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:10,960 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:10,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 21:00:11,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:11,161 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:11,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:11,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1030322137, now seen corresponding path program 1 times [2021-12-06 21:00:11,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:11,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328771195] [2021-12-06 21:00:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:11,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:11,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:11,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328771195] [2021-12-06 21:00:11,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328771195] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:11,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740381141] [2021-12-06 21:00:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:11,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:11,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:11,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:11,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 21:00:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:11,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 21:00:11,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:11,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:00:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:11,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740381141] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:00:11,450 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:00:11,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2021-12-06 21:00:11,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174735063] [2021-12-06 21:00:11,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:00:11,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 21:00:11,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:11,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 21:00:11,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:00:11,454 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 125 [2021-12-06 21:00:11,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 150 transitions, 458 flow. Second operand has 18 states, 18 states have (on average 115.27777777777777) internal successors, (2075), 18 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:11,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:11,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 125 [2021-12-06 21:00:11,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:11,666 INFO L129 PetriNetUnfolder]: 93/808 cut-off events. [2021-12-06 21:00:11,666 INFO L130 PetriNetUnfolder]: For 74/80 co-relation queries the response was YES. [2021-12-06 21:00:11,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 808 events. 93/808 cut-off events. For 74/80 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4081 event pairs, 8 based on Foata normal form. 4/760 useless extension candidates. Maximal degree in co-relation 1207. Up to 110 conditions per place. [2021-12-06 21:00:11,672 INFO L132 encePairwiseOnDemand]: 119/125 looper letters, 19 selfloop transitions, 21 changer transitions 0/174 dead transitions. [2021-12-06 21:00:11,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 174 transitions, 638 flow [2021-12-06 21:00:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 21:00:11,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 21:00:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2417 transitions. [2021-12-06 21:00:11,678 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9207619047619048 [2021-12-06 21:00:11,678 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2417 transitions. [2021-12-06 21:00:11,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2417 transitions. [2021-12-06 21:00:11,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:11,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2417 transitions. [2021-12-06 21:00:11,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 115.0952380952381) internal successors, (2417), 21 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:11,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 125.0) internal successors, (2750), 22 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:11,690 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 125.0) internal successors, (2750), 22 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:11,691 INFO L186 Difference]: Start difference. First operand has 146 places, 150 transitions, 458 flow. Second operand 21 states and 2417 transitions. [2021-12-06 21:00:11,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 174 transitions, 638 flow [2021-12-06 21:00:11,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 174 transitions, 638 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 21:00:11,696 INFO L242 Difference]: Finished difference. Result has 171 places, 163 transitions, 588 flow [2021-12-06 21:00:11,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=588, PETRI_PLACES=171, PETRI_TRANSITIONS=163} [2021-12-06 21:00:11,697 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 49 predicate places. [2021-12-06 21:00:11,698 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 163 transitions, 588 flow [2021-12-06 21:00:11,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 115.27777777777777) internal successors, (2075), 18 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:11,698 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:11,699 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:11,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 21:00:11,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 21:00:11,900 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:11,900 INFO L85 PathProgramCache]: Analyzing trace with hash -461165209, now seen corresponding path program 2 times [2021-12-06 21:00:11,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:11,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964847810] [2021-12-06 21:00:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:11,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:12,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:12,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964847810] [2021-12-06 21:00:12,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964847810] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:12,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346966732] [2021-12-06 21:00:12,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:00:12,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:12,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:12,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:12,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 21:00:12,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 21:00:12,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:00:12,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 21:00:12,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:12,267 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 [2021-12-06 21:00:12,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:00:12,288 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 21:00:12,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:00:12,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:00:12,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:00:12,315 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:00:12,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 21:00:12,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:00:12,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:00:12,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:00:12,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:00:12,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:00:12,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:00:12,351 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:00:12,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2021-12-06 21:00:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 21:00:12,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:12,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346966732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:12,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:12,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 25 [2021-12-06 21:00:12,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072183455] [2021-12-06 21:00:12,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:12,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:00:12,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:12,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:00:12,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2021-12-06 21:00:12,375 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 125 [2021-12-06 21:00:12,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 163 transitions, 588 flow. Second operand has 10 states, 10 states have (on average 68.6) internal successors, (686), 10 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:12,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:12,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 125 [2021-12-06 21:00:12,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:13,798 INFO L129 PetriNetUnfolder]: 2548/6821 cut-off events. [2021-12-06 21:00:13,798 INFO L130 PetriNetUnfolder]: For 2130/2146 co-relation queries the response was YES. [2021-12-06 21:00:13,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14272 conditions, 6821 events. 2548/6821 cut-off events. For 2130/2146 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 52489 event pairs, 956 based on Foata normal form. 0/6248 useless extension candidates. Maximal degree in co-relation 14254. Up to 2498 conditions per place. [2021-12-06 21:00:13,843 INFO L132 encePairwiseOnDemand]: 107/125 looper letters, 347 selfloop transitions, 33 changer transitions 0/467 dead transitions. [2021-12-06 21:00:13,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 467 transitions, 2286 flow [2021-12-06 21:00:13,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:00:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-06 21:00:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1130 transitions. [2021-12-06 21:00:13,846 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7533333333333333 [2021-12-06 21:00:13,846 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1130 transitions. [2021-12-06 21:00:13,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1130 transitions. [2021-12-06 21:00:13,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:13,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1130 transitions. [2021-12-06 21:00:13,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 94.16666666666667) internal successors, (1130), 12 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:13,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:13,853 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:13,853 INFO L186 Difference]: Start difference. First operand has 171 places, 163 transitions, 588 flow. Second operand 12 states and 1130 transitions. [2021-12-06 21:00:13,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 467 transitions, 2286 flow [2021-12-06 21:00:13,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 467 transitions, 2262 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-12-06 21:00:13,878 INFO L242 Difference]: Finished difference. Result has 184 places, 194 transitions, 850 flow [2021-12-06 21:00:13,878 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=850, PETRI_PLACES=184, PETRI_TRANSITIONS=194} [2021-12-06 21:00:13,879 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 62 predicate places. [2021-12-06 21:00:13,879 INFO L470 AbstractCegarLoop]: Abstraction has has 184 places, 194 transitions, 850 flow [2021-12-06 21:00:13,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.6) internal successors, (686), 10 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:13,880 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:13,880 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:13,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 21:00:14,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:14,080 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:14,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:14,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1158747276, now seen corresponding path program 1 times [2021-12-06 21:00:14,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:14,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434503366] [2021-12-06 21:00:14,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:14,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:14,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:14,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434503366] [2021-12-06 21:00:14,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434503366] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:14,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989535260] [2021-12-06 21:00:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:14,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:14,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:14,197 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:14,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 21:00:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:14,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 21:00:14,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:14,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:00:14,487 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:00:14,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989535260] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:00:14,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:00:14,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2021-12-06 21:00:14,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636313316] [2021-12-06 21:00:14,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:00:14,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 21:00:14,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:14,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 21:00:14,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-12-06 21:00:14,492 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 125 [2021-12-06 21:00:14,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 194 transitions, 850 flow. Second operand has 23 states, 23 states have (on average 115.43478260869566) internal successors, (2655), 23 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:14,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:14,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 125 [2021-12-06 21:00:14,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:14,927 INFO L129 PetriNetUnfolder]: 283/2030 cut-off events. [2021-12-06 21:00:14,927 INFO L130 PetriNetUnfolder]: For 1314/1377 co-relation queries the response was YES. [2021-12-06 21:00:14,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3969 conditions, 2030 events. 283/2030 cut-off events. For 1314/1377 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 14995 event pairs, 65 based on Foata normal form. 7/1961 useless extension candidates. Maximal degree in co-relation 3942. Up to 278 conditions per place. [2021-12-06 21:00:14,950 INFO L132 encePairwiseOnDemand]: 119/125 looper letters, 25 selfloop transitions, 30 changer transitions 0/220 dead transitions. [2021-12-06 21:00:14,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 220 transitions, 1100 flow [2021-12-06 21:00:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 21:00:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-06 21:00:14,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3448 transitions. [2021-12-06 21:00:14,961 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9194666666666667 [2021-12-06 21:00:14,961 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3448 transitions. [2021-12-06 21:00:14,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3448 transitions. [2021-12-06 21:00:14,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:14,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3448 transitions. [2021-12-06 21:00:14,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 114.93333333333334) internal successors, (3448), 30 states have internal predecessors, (3448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:14,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 125.0) internal successors, (3875), 31 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:14,979 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 125.0) internal successors, (3875), 31 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:14,979 INFO L186 Difference]: Start difference. First operand has 184 places, 194 transitions, 850 flow. Second operand 30 states and 3448 transitions. [2021-12-06 21:00:14,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 220 transitions, 1100 flow [2021-12-06 21:00:14,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 220 transitions, 1099 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 21:00:14,988 INFO L242 Difference]: Finished difference. Result has 216 places, 204 transitions, 1001 flow [2021-12-06 21:00:14,988 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1001, PETRI_PLACES=216, PETRI_TRANSITIONS=204} [2021-12-06 21:00:14,989 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 94 predicate places. [2021-12-06 21:00:14,989 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 204 transitions, 1001 flow [2021-12-06 21:00:14,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 115.43478260869566) internal successors, (2655), 23 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:14,990 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:14,990 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:15,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 21:00:15,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:15,191 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:15,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:15,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1991683229, now seen corresponding path program 2 times [2021-12-06 21:00:15,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:15,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630032608] [2021-12-06 21:00:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:15,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:00:15,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:15,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630032608] [2021-12-06 21:00:15,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630032608] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:15,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:00:15,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:00:15,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811492401] [2021-12-06 21:00:15,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:15,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:00:15,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:15,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:00:15,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:00:15,303 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 125 [2021-12-06 21:00:15,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 204 transitions, 1001 flow. Second operand has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:15,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:15,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 125 [2021-12-06 21:00:15,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:16,319 INFO L129 PetriNetUnfolder]: 1977/6572 cut-off events. [2021-12-06 21:00:16,319 INFO L130 PetriNetUnfolder]: For 4604/4718 co-relation queries the response was YES. [2021-12-06 21:00:16,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15748 conditions, 6572 events. 1977/6572 cut-off events. For 4604/4718 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 54020 event pairs, 866 based on Foata normal form. 73/6310 useless extension candidates. Maximal degree in co-relation 15718. Up to 3476 conditions per place. [2021-12-06 21:00:16,368 INFO L132 encePairwiseOnDemand]: 110/125 looper letters, 106 selfloop transitions, 57 changer transitions 0/275 dead transitions. [2021-12-06 21:00:16,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 275 transitions, 1661 flow [2021-12-06 21:00:16,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:00:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-06 21:00:16,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 561 transitions. [2021-12-06 21:00:16,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.748 [2021-12-06 21:00:16,371 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 561 transitions. [2021-12-06 21:00:16,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 561 transitions. [2021-12-06 21:00:16,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:16,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 561 transitions. [2021-12-06 21:00:16,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:16,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:16,374 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:16,374 INFO L186 Difference]: Start difference. First operand has 216 places, 204 transitions, 1001 flow. Second operand 6 states and 561 transitions. [2021-12-06 21:00:16,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 275 transitions, 1661 flow [2021-12-06 21:00:16,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 275 transitions, 1615 flow, removed 5 selfloop flow, removed 18 redundant places. [2021-12-06 21:00:16,387 INFO L242 Difference]: Finished difference. Result has 208 places, 255 transitions, 1489 flow [2021-12-06 21:00:16,387 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1489, PETRI_PLACES=208, PETRI_TRANSITIONS=255} [2021-12-06 21:00:16,388 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 86 predicate places. [2021-12-06 21:00:16,388 INFO L470 AbstractCegarLoop]: Abstraction has has 208 places, 255 transitions, 1489 flow [2021-12-06 21:00:16,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:16,388 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:16,388 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:16,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 21:00:16,388 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:16,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:16,389 INFO L85 PathProgramCache]: Analyzing trace with hash 698436477, now seen corresponding path program 1 times [2021-12-06 21:00:16,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:16,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910424797] [2021-12-06 21:00:16,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:16,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:16,464 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:00:16,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:16,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910424797] [2021-12-06 21:00:16,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910424797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:16,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:00:16,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:00:16,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462078472] [2021-12-06 21:00:16,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:16,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:00:16,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:16,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:00:16,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:00:16,466 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 125 [2021-12-06 21:00:16,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 255 transitions, 1489 flow. Second operand has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:16,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:16,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 125 [2021-12-06 21:00:16,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:17,924 INFO L129 PetriNetUnfolder]: 2720/8328 cut-off events. [2021-12-06 21:00:17,924 INFO L130 PetriNetUnfolder]: For 13056/13146 co-relation queries the response was YES. [2021-12-06 21:00:17,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23936 conditions, 8328 events. 2720/8328 cut-off events. For 13056/13146 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 70075 event pairs, 950 based on Foata normal form. 6/8040 useless extension candidates. Maximal degree in co-relation 23901. Up to 4699 conditions per place. [2021-12-06 21:00:17,973 INFO L132 encePairwiseOnDemand]: 102/125 looper letters, 160 selfloop transitions, 103 changer transitions 0/374 dead transitions. [2021-12-06 21:00:17,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 374 transitions, 2643 flow [2021-12-06 21:00:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:00:17,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-06 21:00:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 609 transitions. [2021-12-06 21:00:17,975 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.812 [2021-12-06 21:00:17,975 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 609 transitions. [2021-12-06 21:00:17,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 609 transitions. [2021-12-06 21:00:17,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:17,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 609 transitions. [2021-12-06 21:00:17,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:17,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:17,978 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:17,978 INFO L186 Difference]: Start difference. First operand has 208 places, 255 transitions, 1489 flow. Second operand 6 states and 609 transitions. [2021-12-06 21:00:17,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 374 transitions, 2643 flow [2021-12-06 21:00:17,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 374 transitions, 2543 flow, removed 50 selfloop flow, removed 0 redundant places. [2021-12-06 21:00:18,000 INFO L242 Difference]: Finished difference. Result has 218 places, 340 transitions, 2379 flow [2021-12-06 21:00:18,000 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2379, PETRI_PLACES=218, PETRI_TRANSITIONS=340} [2021-12-06 21:00:18,001 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 96 predicate places. [2021-12-06 21:00:18,001 INFO L470 AbstractCegarLoop]: Abstraction has has 218 places, 340 transitions, 2379 flow [2021-12-06 21:00:18,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:18,001 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:18,001 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:18,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 21:00:18,002 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:18,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:18,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1898019225, now seen corresponding path program 1 times [2021-12-06 21:00:18,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:18,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856295336] [2021-12-06 21:00:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:18,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:00:18,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:18,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856295336] [2021-12-06 21:00:18,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856295336] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:18,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564190917] [2021-12-06 21:00:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:18,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:18,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:18,237 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:18,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 21:00:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:18,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:00:18,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:18,439 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 13 treesize of output 9 [2021-12-06 21:00:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:00:18,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:18,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564190917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:18,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:18,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-06 21:00:18,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162566704] [2021-12-06 21:00:18,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:18,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:00:18,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:18,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:00:18,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-12-06 21:00:18,529 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:00:18,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 340 transitions, 2379 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:18,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:18,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:00:18,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:21,662 INFO L129 PetriNetUnfolder]: 6567/16955 cut-off events. [2021-12-06 21:00:21,663 INFO L130 PetriNetUnfolder]: For 33648/33648 co-relation queries the response was YES. [2021-12-06 21:00:21,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53218 conditions, 16955 events. 6567/16955 cut-off events. For 33648/33648 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 143590 event pairs, 1755 based on Foata normal form. 13/16651 useless extension candidates. Maximal degree in co-relation 53178. Up to 5912 conditions per place. [2021-12-06 21:00:21,786 INFO L132 encePairwiseOnDemand]: 112/125 looper letters, 841 selfloop transitions, 16 changer transitions 0/941 dead transitions. [2021-12-06 21:00:21,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 941 transitions, 8579 flow [2021-12-06 21:00:21,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:00:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-06 21:00:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 952 transitions. [2021-12-06 21:00:21,789 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6346666666666667 [2021-12-06 21:00:21,789 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 952 transitions. [2021-12-06 21:00:21,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 952 transitions. [2021-12-06 21:00:21,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:21,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 952 transitions. [2021-12-06 21:00:21,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 79.33333333333333) internal successors, (952), 12 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:21,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:21,794 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:21,794 INFO L186 Difference]: Start difference. First operand has 218 places, 340 transitions, 2379 flow. Second operand 12 states and 952 transitions. [2021-12-06 21:00:21,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 941 transitions, 8579 flow [2021-12-06 21:00:21,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 941 transitions, 8069 flow, removed 255 selfloop flow, removed 0 redundant places. [2021-12-06 21:00:21,960 INFO L242 Difference]: Finished difference. Result has 236 places, 354 transitions, 2326 flow [2021-12-06 21:00:21,961 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2326, PETRI_PLACES=236, PETRI_TRANSITIONS=354} [2021-12-06 21:00:21,961 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 114 predicate places. [2021-12-06 21:00:21,961 INFO L470 AbstractCegarLoop]: Abstraction has has 236 places, 354 transitions, 2326 flow [2021-12-06 21:00:21,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:21,962 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:21,962 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:21,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 21:00:22,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 21:00:22,164 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:22,165 INFO L85 PathProgramCache]: Analyzing trace with hash 329634111, now seen corresponding path program 2 times [2021-12-06 21:00:22,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:22,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902882532] [2021-12-06 21:00:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:22,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:00:22,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:22,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902882532] [2021-12-06 21:00:22,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902882532] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:22,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479704068] [2021-12-06 21:00:22,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:00:22,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:22,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:22,393 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:22,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 21:00:22,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 21:00:22,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:00:22,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:00:22,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:22,590 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 13 treesize of output 9 [2021-12-06 21:00:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:00:22,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:22,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479704068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:22,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:22,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-06 21:00:22,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205793018] [2021-12-06 21:00:22,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:22,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:00:22,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:22,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:00:22,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:00:22,687 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:00:22,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 354 transitions, 2326 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:22,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:22,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:00:22,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:26,771 INFO L129 PetriNetUnfolder]: 7772/20090 cut-off events. [2021-12-06 21:00:26,771 INFO L130 PetriNetUnfolder]: For 39994/40001 co-relation queries the response was YES. [2021-12-06 21:00:26,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65066 conditions, 20090 events. 7772/20090 cut-off events. For 39994/40001 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 178482 event pairs, 2083 based on Foata normal form. 17/19702 useless extension candidates. Maximal degree in co-relation 65018. Up to 6649 conditions per place. [2021-12-06 21:00:26,934 INFO L132 encePairwiseOnDemand]: 112/125 looper letters, 924 selfloop transitions, 21 changer transitions 0/1029 dead transitions. [2021-12-06 21:00:26,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 1029 transitions, 8663 flow [2021-12-06 21:00:26,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:00:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-06 21:00:26,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1014 transitions. [2021-12-06 21:00:26,936 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.676 [2021-12-06 21:00:26,936 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1014 transitions. [2021-12-06 21:00:26,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1014 transitions. [2021-12-06 21:00:26,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:26,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1014 transitions. [2021-12-06 21:00:26,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 84.5) internal successors, (1014), 12 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:26,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:26,940 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:26,940 INFO L186 Difference]: Start difference. First operand has 236 places, 354 transitions, 2326 flow. Second operand 12 states and 1014 transitions. [2021-12-06 21:00:26,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 1029 transitions, 8663 flow [2021-12-06 21:00:27,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 1029 transitions, 8648 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 21:00:27,036 INFO L242 Difference]: Finished difference. Result has 250 places, 366 transitions, 2466 flow [2021-12-06 21:00:27,036 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2466, PETRI_PLACES=250, PETRI_TRANSITIONS=366} [2021-12-06 21:00:27,037 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 128 predicate places. [2021-12-06 21:00:27,037 INFO L470 AbstractCegarLoop]: Abstraction has has 250 places, 366 transitions, 2466 flow [2021-12-06 21:00:27,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:27,037 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:27,038 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:27,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 21:00:27,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:27,239 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:27,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:27,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2023248087, now seen corresponding path program 1 times [2021-12-06 21:00:27,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:27,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098917660] [2021-12-06 21:00:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:27,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:00:27,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:27,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098917660] [2021-12-06 21:00:27,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098917660] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:27,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810437158] [2021-12-06 21:00:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:27,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:27,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:27,392 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:27,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 21:00:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:27,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:00:27,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:27,617 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 13 treesize of output 9 [2021-12-06 21:00:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:00:27,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:27,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810437158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:27,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:27,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-06 21:00:27,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435401867] [2021-12-06 21:00:27,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:27,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:00:27,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:27,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:00:27,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:00:27,689 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:00:27,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 366 transitions, 2466 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:27,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:27,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:00:27,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:32,545 INFO L129 PetriNetUnfolder]: 9392/24339 cut-off events. [2021-12-06 21:00:32,545 INFO L130 PetriNetUnfolder]: For 55161/55173 co-relation queries the response was YES. [2021-12-06 21:00:32,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81147 conditions, 24339 events. 9392/24339 cut-off events. For 55161/55173 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 223426 event pairs, 2673 based on Foata normal form. 18/23828 useless extension candidates. Maximal degree in co-relation 81094. Up to 7548 conditions per place. [2021-12-06 21:00:32,817 INFO L132 encePairwiseOnDemand]: 111/125 looper letters, 1037 selfloop transitions, 29 changer transitions 0/1150 dead transitions. [2021-12-06 21:00:32,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1150 transitions, 10273 flow [2021-12-06 21:00:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:00:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-06 21:00:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1142 transitions. [2021-12-06 21:00:32,820 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6525714285714286 [2021-12-06 21:00:32,820 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1142 transitions. [2021-12-06 21:00:32,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1142 transitions. [2021-12-06 21:00:32,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:32,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1142 transitions. [2021-12-06 21:00:32,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 81.57142857142857) internal successors, (1142), 14 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:32,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:32,824 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:32,824 INFO L186 Difference]: Start difference. First operand has 250 places, 366 transitions, 2466 flow. Second operand 14 states and 1142 transitions. [2021-12-06 21:00:32,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1150 transitions, 10273 flow [2021-12-06 21:00:32,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1150 transitions, 10185 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-12-06 21:00:32,951 INFO L242 Difference]: Finished difference. Result has 267 places, 384 transitions, 2713 flow [2021-12-06 21:00:32,952 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2713, PETRI_PLACES=267, PETRI_TRANSITIONS=384} [2021-12-06 21:00:32,952 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 145 predicate places. [2021-12-06 21:00:32,952 INFO L470 AbstractCegarLoop]: Abstraction has has 267 places, 384 transitions, 2713 flow [2021-12-06 21:00:32,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:32,952 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:32,953 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:32,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 21:00:33,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 21:00:33,154 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:33,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1534785, now seen corresponding path program 3 times [2021-12-06 21:00:33,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:33,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831016607] [2021-12-06 21:00:33,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:33,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:00:33,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:33,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831016607] [2021-12-06 21:00:33,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831016607] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:33,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145521788] [2021-12-06 21:00:33,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 21:00:33,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:33,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:33,327 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:33,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 21:00:33,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-06 21:00:33,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:00:33,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:00:33,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:33,532 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 13 treesize of output 9 [2021-12-06 21:00:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:00:33,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:33,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145521788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:33,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:33,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-06 21:00:33,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586165569] [2021-12-06 21:00:33,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:33,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:00:33,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:33,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:00:33,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:00:33,609 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:00:33,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 384 transitions, 2713 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:33,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:33,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:00:33,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:39,313 INFO L129 PetriNetUnfolder]: 10329/26616 cut-off events. [2021-12-06 21:00:39,314 INFO L130 PetriNetUnfolder]: For 69010/69043 co-relation queries the response was YES. [2021-12-06 21:00:39,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91974 conditions, 26616 events. 10329/26616 cut-off events. For 69010/69043 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 248142 event pairs, 3195 based on Foata normal form. 25/26102 useless extension candidates. Maximal degree in co-relation 91912. Up to 9945 conditions per place. [2021-12-06 21:00:39,573 INFO L132 encePairwiseOnDemand]: 111/125 looper letters, 1002 selfloop transitions, 38 changer transitions 0/1124 dead transitions. [2021-12-06 21:00:39,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 1124 transitions, 10114 flow [2021-12-06 21:00:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:00:39,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-06 21:00:39,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1177 transitions. [2021-12-06 21:00:39,575 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6725714285714286 [2021-12-06 21:00:39,575 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1177 transitions. [2021-12-06 21:00:39,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1177 transitions. [2021-12-06 21:00:39,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:39,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1177 transitions. [2021-12-06 21:00:39,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 84.07142857142857) internal successors, (1177), 14 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:39,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:39,578 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:39,578 INFO L186 Difference]: Start difference. First operand has 267 places, 384 transitions, 2713 flow. Second operand 14 states and 1177 transitions. [2021-12-06 21:00:39,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 1124 transitions, 10114 flow [2021-12-06 21:00:39,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 1124 transitions, 10001 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-12-06 21:00:39,745 INFO L242 Difference]: Finished difference. Result has 283 places, 402 transitions, 2996 flow [2021-12-06 21:00:39,745 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2996, PETRI_PLACES=283, PETRI_TRANSITIONS=402} [2021-12-06 21:00:39,746 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 161 predicate places. [2021-12-06 21:00:39,746 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 402 transitions, 2996 flow [2021-12-06 21:00:39,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:39,746 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:39,746 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:39,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 21:00:39,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:39,948 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:39,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:39,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1801468631, now seen corresponding path program 2 times [2021-12-06 21:00:39,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:39,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846350111] [2021-12-06 21:00:39,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:39,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:00:40,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:40,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846350111] [2021-12-06 21:00:40,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846350111] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:40,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639031053] [2021-12-06 21:00:40,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:00:40,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:40,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:40,091 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:40,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 21:00:40,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 21:00:40,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:00:40,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:00:40,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:40,300 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 13 treesize of output 9 [2021-12-06 21:00:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:00:40,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:40,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639031053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:40,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:40,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-06 21:00:40,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340613483] [2021-12-06 21:00:40,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:40,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:00:40,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:40,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:00:40,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:00:40,367 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:00:40,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 402 transitions, 2996 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:40,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:40,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:00:40,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:47,275 INFO L129 PetriNetUnfolder]: 11983/31018 cut-off events. [2021-12-06 21:00:47,276 INFO L130 PetriNetUnfolder]: For 96504/96556 co-relation queries the response was YES. [2021-12-06 21:00:47,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109792 conditions, 31018 events. 11983/31018 cut-off events. For 96504/96556 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 298925 event pairs, 3376 based on Foata normal form. 33/30389 useless extension candidates. Maximal degree in co-relation 109721. Up to 7860 conditions per place. [2021-12-06 21:00:47,643 INFO L132 encePairwiseOnDemand]: 111/125 looper letters, 1246 selfloop transitions, 41 changer transitions 0/1371 dead transitions. [2021-12-06 21:00:47,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1371 transitions, 12965 flow [2021-12-06 21:00:47,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:00:47,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-06 21:00:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1173 transitions. [2021-12-06 21:00:47,645 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6702857142857143 [2021-12-06 21:00:47,645 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1173 transitions. [2021-12-06 21:00:47,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1173 transitions. [2021-12-06 21:00:47,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:47,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1173 transitions. [2021-12-06 21:00:47,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 83.78571428571429) internal successors, (1173), 14 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:47,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:47,649 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:47,650 INFO L186 Difference]: Start difference. First operand has 283 places, 402 transitions, 2996 flow. Second operand 14 states and 1173 transitions. [2021-12-06 21:00:47,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1371 transitions, 12965 flow [2021-12-06 21:00:47,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1371 transitions, 12841 flow, removed 16 selfloop flow, removed 6 redundant places. [2021-12-06 21:00:47,895 INFO L242 Difference]: Finished difference. Result has 297 places, 423 transitions, 3390 flow [2021-12-06 21:00:47,896 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3390, PETRI_PLACES=297, PETRI_TRANSITIONS=423} [2021-12-06 21:00:47,896 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 175 predicate places. [2021-12-06 21:00:47,896 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 423 transitions, 3390 flow [2021-12-06 21:00:47,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:47,896 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:47,897 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:47,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 21:00:48,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 21:00:48,098 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:48,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1912330041, now seen corresponding path program 4 times [2021-12-06 21:00:48,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:48,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275484520] [2021-12-06 21:00:48,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:48,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:00:48,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:48,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275484520] [2021-12-06 21:00:48,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275484520] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:48,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634049761] [2021-12-06 21:00:48,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 21:00:48,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:48,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:48,237 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:48,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 21:00:48,377 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 21:00:48,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:00:48,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 21:00:48,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:48,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 21:00:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:00:48,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:48,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634049761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:48,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:48,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 13 [2021-12-06 21:00:48,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222024764] [2021-12-06 21:00:48,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:48,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:00:48,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:00:48,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:00:48,494 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:00:48,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 423 transitions, 3390 flow. Second operand has 9 states, 9 states have (on average 56.666666666666664) internal successors, (510), 9 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:48,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:48,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:00:48,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:00:56,276 INFO L129 PetriNetUnfolder]: 13546/34808 cut-off events. [2021-12-06 21:00:56,276 INFO L130 PetriNetUnfolder]: For 118655/118751 co-relation queries the response was YES. [2021-12-06 21:00:56,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126633 conditions, 34808 events. 13546/34808 cut-off events. For 118655/118751 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 341820 event pairs, 2677 based on Foata normal form. 75/34215 useless extension candidates. Maximal degree in co-relation 126555. Up to 8747 conditions per place. [2021-12-06 21:00:56,734 INFO L132 encePairwiseOnDemand]: 112/125 looper letters, 1423 selfloop transitions, 118 changer transitions 0/1625 dead transitions. [2021-12-06 21:00:56,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 1625 transitions, 15847 flow [2021-12-06 21:00:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 21:00:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-06 21:00:56,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1849 transitions. [2021-12-06 21:00:56,737 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6431304347826087 [2021-12-06 21:00:56,737 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1849 transitions. [2021-12-06 21:00:56,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1849 transitions. [2021-12-06 21:00:56,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:00:56,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1849 transitions. [2021-12-06 21:00:56,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 80.3913043478261) internal successors, (1849), 23 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:56,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 125.0) internal successors, (3000), 24 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:56,742 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 125.0) internal successors, (3000), 24 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:56,742 INFO L186 Difference]: Start difference. First operand has 297 places, 423 transitions, 3390 flow. Second operand 23 states and 1849 transitions. [2021-12-06 21:00:56,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 1625 transitions, 15847 flow [2021-12-06 21:00:57,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 1625 transitions, 15660 flow, removed 66 selfloop flow, removed 5 redundant places. [2021-12-06 21:00:57,155 INFO L242 Difference]: Finished difference. Result has 325 places, 490 transitions, 4491 flow [2021-12-06 21:00:57,155 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=3269, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4491, PETRI_PLACES=325, PETRI_TRANSITIONS=490} [2021-12-06 21:00:57,155 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 203 predicate places. [2021-12-06 21:00:57,155 INFO L470 AbstractCegarLoop]: Abstraction has has 325 places, 490 transitions, 4491 flow [2021-12-06 21:00:57,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.666666666666664) internal successors, (510), 9 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:57,156 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:00:57,156 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:00:57,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 21:00:57,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 21:00:57,357 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:00:57,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:00:57,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1510215119, now seen corresponding path program 3 times [2021-12-06 21:00:57,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:00:57,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925812997] [2021-12-06 21:00:57,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:00:57,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:00:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:00:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:00:57,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:00:57,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925812997] [2021-12-06 21:00:57,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925812997] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:57,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680502355] [2021-12-06 21:00:57,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 21:00:57,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:00:57,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:00:57,544 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:00:57,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 21:00:57,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-06 21:00:57,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:00:57,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:00:57,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:00:57,806 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 13 treesize of output 9 [2021-12-06 21:00:57,839 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:00:57,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:00:57,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680502355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:00:57,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:00:57,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-06 21:00:57,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919029338] [2021-12-06 21:00:57,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:00:57,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:00:57,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:57,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:00:57,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-06 21:00:57,841 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:00:57,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 490 transitions, 4491 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:00:57,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:00:57,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:00:57,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:08,349 INFO L129 PetriNetUnfolder]: 16338/42532 cut-off events. [2021-12-06 21:01:08,349 INFO L130 PetriNetUnfolder]: For 169773/169894 co-relation queries the response was YES. [2021-12-06 21:01:08,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157784 conditions, 42532 events. 16338/42532 cut-off events. For 169773/169894 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 437302 event pairs, 6383 based on Foata normal form. 57/41700 useless extension candidates. Maximal degree in co-relation 157696. Up to 15600 conditions per place. [2021-12-06 21:01:08,970 INFO L132 encePairwiseOnDemand]: 110/125 looper letters, 1476 selfloop transitions, 97 changer transitions 0/1657 dead transitions. [2021-12-06 21:01:08,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 1657 transitions, 16815 flow [2021-12-06 21:01:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 21:01:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-06 21:01:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2017 transitions. [2021-12-06 21:01:08,973 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5976296296296296 [2021-12-06 21:01:08,973 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2017 transitions. [2021-12-06 21:01:08,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2017 transitions. [2021-12-06 21:01:08,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:08,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2017 transitions. [2021-12-06 21:01:08,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 74.70370370370371) internal successors, (2017), 27 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:08,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 125.0) internal successors, (3500), 28 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:08,978 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 125.0) internal successors, (3500), 28 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:08,978 INFO L186 Difference]: Start difference. First operand has 325 places, 490 transitions, 4491 flow. Second operand 27 states and 2017 transitions. [2021-12-06 21:01:08,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 1657 transitions, 16815 flow [2021-12-06 21:01:09,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1657 transitions, 16330 flow, removed 206 selfloop flow, removed 4 redundant places. [2021-12-06 21:01:09,548 INFO L242 Difference]: Finished difference. Result has 371 places, 559 transitions, 5516 flow [2021-12-06 21:01:09,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=4161, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5516, PETRI_PLACES=371, PETRI_TRANSITIONS=559} [2021-12-06 21:01:09,548 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 249 predicate places. [2021-12-06 21:01:09,549 INFO L470 AbstractCegarLoop]: Abstraction has has 371 places, 559 transitions, 5516 flow [2021-12-06 21:01:09,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:09,549 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:09,549 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:09,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 21:01:09,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 21:01:09,750 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:01:09,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash -410509795, now seen corresponding path program 5 times [2021-12-06 21:01:09,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:09,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317044347] [2021-12-06 21:01:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:09,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:01:09,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:09,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317044347] [2021-12-06 21:01:09,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317044347] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:01:09,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317501091] [2021-12-06 21:01:09,835 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 21:01:09,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:01:09,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:01:09,836 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:01:09,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 21:01:09,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-12-06 21:01:09,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:01:09,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:01:09,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:10,117 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 13 treesize of output 9 [2021-12-06 21:01:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:01:10,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:01:10,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317501091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:10,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:01:10,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-06 21:01:10,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100627352] [2021-12-06 21:01:10,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:10,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:10,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:10,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:10,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:01:10,152 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:01:10,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 559 transitions, 5516 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:10,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:10,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:01:10,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:25,069 INFO L129 PetriNetUnfolder]: 20755/54221 cut-off events. [2021-12-06 21:01:25,069 INFO L130 PetriNetUnfolder]: For 248061/248194 co-relation queries the response was YES. [2021-12-06 21:01:25,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 204615 conditions, 54221 events. 20755/54221 cut-off events. For 248061/248194 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 590834 event pairs, 7452 based on Foata normal form. 64/53099 useless extension candidates. Maximal degree in co-relation 204503. Up to 15378 conditions per place. [2021-12-06 21:01:26,159 INFO L132 encePairwiseOnDemand]: 110/125 looper letters, 1918 selfloop transitions, 123 changer transitions 0/2125 dead transitions. [2021-12-06 21:01:26,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 2125 transitions, 21683 flow [2021-12-06 21:01:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 21:01:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-12-06 21:01:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2294 transitions. [2021-12-06 21:01:26,163 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6328275862068965 [2021-12-06 21:01:26,163 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2294 transitions. [2021-12-06 21:01:26,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2294 transitions. [2021-12-06 21:01:26,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:26,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2294 transitions. [2021-12-06 21:01:26,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 79.10344827586206) internal successors, (2294), 29 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:26,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 125.0) internal successors, (3750), 30 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:26,169 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 125.0) internal successors, (3750), 30 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:26,169 INFO L186 Difference]: Start difference. First operand has 371 places, 559 transitions, 5516 flow. Second operand 29 states and 2294 transitions. [2021-12-06 21:01:26,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 2125 transitions, 21683 flow [2021-12-06 21:01:27,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 2125 transitions, 21416 flow, removed 133 selfloop flow, removed 1 redundant places. [2021-12-06 21:01:27,317 INFO L242 Difference]: Finished difference. Result has 421 places, 632 transitions, 6899 flow [2021-12-06 21:01:27,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=5249, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6899, PETRI_PLACES=421, PETRI_TRANSITIONS=632} [2021-12-06 21:01:27,318 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 299 predicate places. [2021-12-06 21:01:27,318 INFO L470 AbstractCegarLoop]: Abstraction has has 421 places, 632 transitions, 6899 flow [2021-12-06 21:01:27,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:27,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:27,318 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:27,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-06 21:01:27,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 21:01:27,520 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:01:27,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:27,521 INFO L85 PathProgramCache]: Analyzing trace with hash 25820133, now seen corresponding path program 4 times [2021-12-06 21:01:27,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:27,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471072184] [2021-12-06 21:01:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:27,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:01:27,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:27,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471072184] [2021-12-06 21:01:27,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471072184] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:01:27,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314557590] [2021-12-06 21:01:27,660 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 21:01:27,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:01:27,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:01:27,661 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:01:27,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 21:01:27,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 21:01:27,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:01:27,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 21:01:27,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:27,872 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 13 treesize of output 9 [2021-12-06 21:01:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:01:27,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:01:27,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314557590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:27,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:01:27,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2021-12-06 21:01:27,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819997752] [2021-12-06 21:01:27,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:27,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:01:27,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:01:27,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:01:27,898 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:01:27,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 632 transitions, 6899 flow. Second operand has 9 states, 9 states have (on average 56.666666666666664) internal successors, (510), 9 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:27,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:27,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:01:27,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:01:47,175 INFO L129 PetriNetUnfolder]: 24416/64283 cut-off events. [2021-12-06 21:01:47,176 INFO L130 PetriNetUnfolder]: For 354524/354795 co-relation queries the response was YES. [2021-12-06 21:01:48,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247866 conditions, 64283 events. 24416/64283 cut-off events. For 354524/354795 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 729104 event pairs, 7110 based on Foata normal form. 164/62987 useless extension candidates. Maximal degree in co-relation 247731. Up to 19900 conditions per place. [2021-12-06 21:01:48,726 INFO L132 encePairwiseOnDemand]: 112/125 looper letters, 2044 selfloop transitions, 208 changer transitions 0/2336 dead transitions. [2021-12-06 21:01:48,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 2336 transitions, 25389 flow [2021-12-06 21:01:48,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 21:01:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-06 21:01:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2187 transitions. [2021-12-06 21:01:48,729 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.648 [2021-12-06 21:01:48,729 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2187 transitions. [2021-12-06 21:01:48,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2187 transitions. [2021-12-06 21:01:48,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:01:48,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2187 transitions. [2021-12-06 21:01:48,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 81.0) internal successors, (2187), 27 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:48,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 125.0) internal successors, (3500), 28 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:48,735 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 125.0) internal successors, (3500), 28 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:48,735 INFO L186 Difference]: Start difference. First operand has 421 places, 632 transitions, 6899 flow. Second operand 27 states and 2187 transitions. [2021-12-06 21:01:48,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 2336 transitions, 25389 flow [2021-12-06 21:01:50,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 2336 transitions, 24940 flow, removed 224 selfloop flow, removed 1 redundant places. [2021-12-06 21:01:50,851 INFO L242 Difference]: Finished difference. Result has 461 places, 699 transitions, 8269 flow [2021-12-06 21:01:50,852 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=6472, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=8269, PETRI_PLACES=461, PETRI_TRANSITIONS=699} [2021-12-06 21:01:50,852 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 339 predicate places. [2021-12-06 21:01:50,852 INFO L470 AbstractCegarLoop]: Abstraction has has 461 places, 699 transitions, 8269 flow [2021-12-06 21:01:50,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.666666666666664) internal successors, (510), 9 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:50,853 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:01:50,853 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:50,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 21:01:51,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:01:51,054 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:01:51,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:51,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2010413865, now seen corresponding path program 6 times [2021-12-06 21:01:51,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:51,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771502267] [2021-12-06 21:01:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:51,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:01:51,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:51,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771502267] [2021-12-06 21:01:51,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771502267] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:01:51,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184532800] [2021-12-06 21:01:51,242 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 21:01:51,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:01:51,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:01:51,243 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:01:51,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 21:01:51,312 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-12-06 21:01:51,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:01:51,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:01:51,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:51,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 21:01:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:01:51,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:01:51,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184532800] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:51,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:01:51,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-06 21:01:51,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239048314] [2021-12-06 21:01:51,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:51,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:51,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:01:51,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-06 21:01:51,498 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:01:51,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 699 transitions, 8269 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:51,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:01:51,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:01:51,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:11,552 INFO L129 PetriNetUnfolder]: 24658/64832 cut-off events. [2021-12-06 21:02:11,552 INFO L130 PetriNetUnfolder]: For 415213/415397 co-relation queries the response was YES. [2021-12-06 21:02:13,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 255645 conditions, 64832 events. 24658/64832 cut-off events. For 415213/415397 co-relation queries the response was YES. Maximal size of possible extension queue 1051. Compared 735188 event pairs, 9558 based on Foata normal form. 67/63421 useless extension candidates. Maximal degree in co-relation 255495. Up to 20666 conditions per place. [2021-12-06 21:02:13,271 INFO L132 encePairwiseOnDemand]: 111/125 looper letters, 1658 selfloop transitions, 119 changer transitions 0/1861 dead transitions. [2021-12-06 21:02:13,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1861 transitions, 21167 flow [2021-12-06 21:02:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 21:02:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-06 21:02:13,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1469 transitions. [2021-12-06 21:02:13,273 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6528888888888889 [2021-12-06 21:02:13,274 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1469 transitions. [2021-12-06 21:02:13,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1469 transitions. [2021-12-06 21:02:13,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:13,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1469 transitions. [2021-12-06 21:02:13,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 81.61111111111111) internal successors, (1469), 18 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:13,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 125.0) internal successors, (2375), 19 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:13,278 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 125.0) internal successors, (2375), 19 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:13,278 INFO L186 Difference]: Start difference. First operand has 461 places, 699 transitions, 8269 flow. Second operand 18 states and 1469 transitions. [2021-12-06 21:02:13,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1861 transitions, 21167 flow [2021-12-06 21:02:15,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1861 transitions, 20538 flow, removed 230 selfloop flow, removed 2 redundant places. [2021-12-06 21:02:15,827 INFO L242 Difference]: Finished difference. Result has 488 places, 725 transitions, 8643 flow [2021-12-06 21:02:15,828 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=7689, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8643, PETRI_PLACES=488, PETRI_TRANSITIONS=725} [2021-12-06 21:02:15,828 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 366 predicate places. [2021-12-06 21:02:15,829 INFO L470 AbstractCegarLoop]: Abstraction has has 488 places, 725 transitions, 8643 flow [2021-12-06 21:02:15,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:15,829 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:15,829 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:15,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 21:02:16,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-12-06 21:02:16,030 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:02:16,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash -451648451, now seen corresponding path program 7 times [2021-12-06 21:02:16,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:16,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885524966] [2021-12-06 21:02:16,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:16,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:02:16,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:16,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885524966] [2021-12-06 21:02:16,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885524966] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:02:16,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883793783] [2021-12-06 21:02:16,209 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 21:02:16,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:02:16,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:02:16,210 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:02:16,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 21:02:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:16,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:02:16,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:16,450 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 13 treesize of output 9 [2021-12-06 21:02:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:02:16,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:16,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883793783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:16,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:02:16,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-06 21:02:16,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942226206] [2021-12-06 21:02:16,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:16,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:16,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:16,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:16,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-06 21:02:16,500 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:02:16,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 725 transitions, 8643 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:16,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:16,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:02:16,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:02:37,129 INFO L129 PetriNetUnfolder]: 24700/64942 cut-off events. [2021-12-06 21:02:37,129 INFO L130 PetriNetUnfolder]: For 438634/438829 co-relation queries the response was YES. [2021-12-06 21:02:38,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 256904 conditions, 64942 events. 24700/64942 cut-off events. For 438634/438829 co-relation queries the response was YES. Maximal size of possible extension queue 1054. Compared 736504 event pairs, 9504 based on Foata normal form. 75/63544 useless extension candidates. Maximal degree in co-relation 256743. Up to 20727 conditions per place. [2021-12-06 21:02:38,942 INFO L132 encePairwiseOnDemand]: 111/125 looper letters, 1704 selfloop transitions, 111 changer transitions 0/1899 dead transitions. [2021-12-06 21:02:38,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 1899 transitions, 21606 flow [2021-12-06 21:02:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 21:02:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-06 21:02:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1566 transitions. [2021-12-06 21:02:38,945 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6593684210526316 [2021-12-06 21:02:38,945 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1566 transitions. [2021-12-06 21:02:38,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1566 transitions. [2021-12-06 21:02:38,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:02:38,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1566 transitions. [2021-12-06 21:02:38,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 82.42105263157895) internal successors, (1566), 19 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:38,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 125.0) internal successors, (2500), 20 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:38,949 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 125.0) internal successors, (2500), 20 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:38,949 INFO L186 Difference]: Start difference. First operand has 488 places, 725 transitions, 8643 flow. Second operand 19 states and 1566 transitions. [2021-12-06 21:02:38,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 1899 transitions, 21606 flow [2021-12-06 21:02:41,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 1899 transitions, 21203 flow, removed 193 selfloop flow, removed 2 redundant places. [2021-12-06 21:02:41,746 INFO L242 Difference]: Finished difference. Result has 511 places, 735 transitions, 8810 flow [2021-12-06 21:02:41,746 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=8374, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8810, PETRI_PLACES=511, PETRI_TRANSITIONS=735} [2021-12-06 21:02:41,747 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 389 predicate places. [2021-12-06 21:02:41,747 INFO L470 AbstractCegarLoop]: Abstraction has has 511 places, 735 transitions, 8810 flow [2021-12-06 21:02:41,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:41,747 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:02:41,747 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:41,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 21:02:41,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:02:41,948 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:02:41,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:41,948 INFO L85 PathProgramCache]: Analyzing trace with hash -439755467, now seen corresponding path program 8 times [2021-12-06 21:02:41,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:02:41,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886182712] [2021-12-06 21:02:41,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:41,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:02:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:02:42,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:02:42,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886182712] [2021-12-06 21:02:42,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886182712] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:02:42,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201835251] [2021-12-06 21:02:42,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:02:42,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:02:42,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:02:42,049 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:02:42,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 21:02:42,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 21:02:42,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:02:42,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:02:42,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:42,281 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 13 treesize of output 9 [2021-12-06 21:02:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:02:42,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:42,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201835251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:42,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:02:42,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-06 21:02:42,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484289651] [2021-12-06 21:02:42,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:42,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:42,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:02:42,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:42,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:02:42,313 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:02:42,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 735 transitions, 8810 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:02:42,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:02:42,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:02:42,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:03:05,339 INFO L129 PetriNetUnfolder]: 26184/68800 cut-off events. [2021-12-06 21:03:05,340 INFO L130 PetriNetUnfolder]: For 446095/446299 co-relation queries the response was YES. [2021-12-06 21:03:07,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 272400 conditions, 68800 events. 26184/68800 cut-off events. For 446095/446299 co-relation queries the response was YES. Maximal size of possible extension queue 1094. Compared 788290 event pairs, 9822 based on Foata normal form. 103/67364 useless extension candidates. Maximal degree in co-relation 272232. Up to 20798 conditions per place. [2021-12-06 21:03:07,601 INFO L132 encePairwiseOnDemand]: 110/125 looper letters, 1886 selfloop transitions, 153 changer transitions 0/2123 dead transitions. [2021-12-06 21:03:07,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 2123 transitions, 23789 flow [2021-12-06 21:03:07,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 21:03:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-06 21:03:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2153 transitions. [2021-12-06 21:03:07,604 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6151428571428571 [2021-12-06 21:03:07,604 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2153 transitions. [2021-12-06 21:03:07,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2153 transitions. [2021-12-06 21:03:07,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:03:07,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2153 transitions. [2021-12-06 21:03:07,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 76.89285714285714) internal successors, (2153), 28 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:07,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 125.0) internal successors, (3625), 29 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:07,611 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 125.0) internal successors, (3625), 29 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:07,611 INFO L186 Difference]: Start difference. First operand has 511 places, 735 transitions, 8810 flow. Second operand 28 states and 2153 transitions. [2021-12-06 21:03:07,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 2123 transitions, 23789 flow [2021-12-06 21:03:10,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 2123 transitions, 23453 flow, removed 61 selfloop flow, removed 11 redundant places. [2021-12-06 21:03:10,811 INFO L242 Difference]: Finished difference. Result has 540 places, 777 transitions, 9765 flow [2021-12-06 21:03:10,812 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=8563, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=9765, PETRI_PLACES=540, PETRI_TRANSITIONS=777} [2021-12-06 21:03:10,812 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 418 predicate places. [2021-12-06 21:03:10,813 INFO L470 AbstractCegarLoop]: Abstraction has has 540 places, 777 transitions, 9765 flow [2021-12-06 21:03:10,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:10,813 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:03:10,813 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:10,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 21:03:11,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:11,014 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:03:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:11,015 INFO L85 PathProgramCache]: Analyzing trace with hash 93925529, now seen corresponding path program 9 times [2021-12-06 21:03:11,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:11,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572157257] [2021-12-06 21:03:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:11,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:03:11,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:11,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572157257] [2021-12-06 21:03:11,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572157257] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:03:11,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333383076] [2021-12-06 21:03:11,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 21:03:11,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:11,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:03:11,258 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:03:11,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 21:03:11,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-06 21:03:11,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:03:11,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:03:11,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:03:11,507 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 13 treesize of output 9 [2021-12-06 21:03:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:03:11,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:03:11,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333383076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:11,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:03:11,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-06 21:03:11,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874136224] [2021-12-06 21:03:11,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:11,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:03:11,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:11,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:03:11,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-06 21:03:11,540 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:03:11,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 777 transitions, 9765 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:11,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:03:11,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:03:11,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:03:35,312 INFO L129 PetriNetUnfolder]: 26371/68940 cut-off events. [2021-12-06 21:03:35,312 INFO L130 PetriNetUnfolder]: For 431494/431722 co-relation queries the response was YES. [2021-12-06 21:03:37,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 274250 conditions, 68940 events. 26371/68940 cut-off events. For 431494/431722 co-relation queries the response was YES. Maximal size of possible extension queue 1189. Compared 788950 event pairs, 9812 based on Foata normal form. 114/67559 useless extension candidates. Maximal degree in co-relation 274070. Up to 20749 conditions per place. [2021-12-06 21:03:37,594 INFO L132 encePairwiseOnDemand]: 110/125 looper letters, 1793 selfloop transitions, 163 changer transitions 0/2040 dead transitions. [2021-12-06 21:03:37,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 2040 transitions, 23150 flow [2021-12-06 21:03:37,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 21:03:37,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-06 21:03:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2357 transitions. [2021-12-06 21:03:37,597 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6082580645161291 [2021-12-06 21:03:37,597 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2357 transitions. [2021-12-06 21:03:37,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2357 transitions. [2021-12-06 21:03:37,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:03:37,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2357 transitions. [2021-12-06 21:03:37,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 76.03225806451613) internal successors, (2357), 31 states have internal predecessors, (2357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:37,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 125.0) internal successors, (4000), 32 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:37,603 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 125.0) internal successors, (4000), 32 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:37,604 INFO L186 Difference]: Start difference. First operand has 540 places, 777 transitions, 9765 flow. Second operand 31 states and 2357 transitions. [2021-12-06 21:03:37,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 2040 transitions, 23150 flow [2021-12-06 21:03:40,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 2040 transitions, 22819 flow, removed 95 selfloop flow, removed 9 redundant places. [2021-12-06 21:03:40,667 INFO L242 Difference]: Finished difference. Result has 570 places, 800 transitions, 10352 flow [2021-12-06 21:03:40,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=9409, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=10352, PETRI_PLACES=570, PETRI_TRANSITIONS=800} [2021-12-06 21:03:40,668 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 448 predicate places. [2021-12-06 21:03:40,669 INFO L470 AbstractCegarLoop]: Abstraction has has 570 places, 800 transitions, 10352 flow [2021-12-06 21:03:40,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:40,669 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:03:40,669 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:03:40,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 21:03:40,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 21:03:40,870 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:03:40,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:03:40,871 INFO L85 PathProgramCache]: Analyzing trace with hash -845524709, now seen corresponding path program 10 times [2021-12-06 21:03:40,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:03:40,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872047474] [2021-12-06 21:03:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:03:40,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:03:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:03:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:03:41,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:03:41,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872047474] [2021-12-06 21:03:41,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872047474] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:03:41,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503353614] [2021-12-06 21:03:41,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 21:03:41,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:03:41,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:03:41,066 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:03:41,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 21:03:41,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 21:03:41,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:03:41,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 21:03:41,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:03:41,336 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 13 treesize of output 9 [2021-12-06 21:03:41,382 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:03:41,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:03:41,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503353614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:03:41,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:03:41,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-12-06 21:03:41,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916224866] [2021-12-06 21:03:41,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:03:41,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:03:41,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:41,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:03:41,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:03:41,384 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:03:41,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 800 transitions, 10352 flow. Second operand has 9 states, 9 states have (on average 56.666666666666664) internal successors, (510), 9 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:03:41,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:03:41,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:03:41,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:04:05,627 INFO L129 PetriNetUnfolder]: 26440/69369 cut-off events. [2021-12-06 21:04:05,627 INFO L130 PetriNetUnfolder]: For 452588/452824 co-relation queries the response was YES. [2021-12-06 21:04:07,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277863 conditions, 69369 events. 26440/69369 cut-off events. For 452588/452824 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 798036 event pairs, 8568 based on Foata normal form. 159/68024 useless extension candidates. Maximal degree in co-relation 277674. Up to 23485 conditions per place. [2021-12-06 21:04:08,148 INFO L132 encePairwiseOnDemand]: 112/125 looper letters, 1369 selfloop transitions, 288 changer transitions 0/1741 dead transitions. [2021-12-06 21:04:08,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 1741 transitions, 21871 flow [2021-12-06 21:04:08,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 21:04:08,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-06 21:04:08,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1464 transitions. [2021-12-06 21:04:08,151 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.616421052631579 [2021-12-06 21:04:08,151 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1464 transitions. [2021-12-06 21:04:08,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1464 transitions. [2021-12-06 21:04:08,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:04:08,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1464 transitions. [2021-12-06 21:04:08,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 77.05263157894737) internal successors, (1464), 19 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:08,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 125.0) internal successors, (2500), 20 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:08,157 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 125.0) internal successors, (2500), 20 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:08,157 INFO L186 Difference]: Start difference. First operand has 570 places, 800 transitions, 10352 flow. Second operand 19 states and 1464 transitions. [2021-12-06 21:04:08,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 1741 transitions, 21871 flow [2021-12-06 21:04:11,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 1741 transitions, 21329 flow, removed 110 selfloop flow, removed 30 redundant places. [2021-12-06 21:04:11,583 INFO L242 Difference]: Finished difference. Result has 566 places, 831 transitions, 11440 flow [2021-12-06 21:04:11,583 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=9827, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11440, PETRI_PLACES=566, PETRI_TRANSITIONS=831} [2021-12-06 21:04:11,584 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 444 predicate places. [2021-12-06 21:04:11,584 INFO L470 AbstractCegarLoop]: Abstraction has has 566 places, 831 transitions, 11440 flow [2021-12-06 21:04:11,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.666666666666664) internal successors, (510), 9 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:11,584 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:04:11,584 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:04:11,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-06 21:04:11,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:04:11,786 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:04:11,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:04:11,787 INFO L85 PathProgramCache]: Analyzing trace with hash -731657263, now seen corresponding path program 11 times [2021-12-06 21:04:11,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:04:11,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249714594] [2021-12-06 21:04:11,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:04:11,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:04:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:04:11,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:04:11,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249714594] [2021-12-06 21:04:11,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249714594] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:04:11,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85502251] [2021-12-06 21:04:11,899 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 21:04:11,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:04:11,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:04:11,900 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:04:11,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 21:04:12,011 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-12-06 21:04:12,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:04:12,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:04:12,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:04:12,151 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 13 treesize of output 9 [2021-12-06 21:04:12,181 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:04:12,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:04:12,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85502251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:04:12,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:04:12,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-06 21:04:12,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784354976] [2021-12-06 21:04:12,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:04:12,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:04:12,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:04:12,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:04:12,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:04:12,183 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:04:12,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 831 transitions, 11440 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:12,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:04:12,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:04:12,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:04:39,529 INFO L129 PetriNetUnfolder]: 27948/73277 cut-off events. [2021-12-06 21:04:39,529 INFO L130 PetriNetUnfolder]: For 518487/518743 co-relation queries the response was YES. [2021-12-06 21:04:41,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297569 conditions, 73277 events. 27948/73277 cut-off events. For 518487/518743 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 851376 event pairs, 10847 based on Foata normal form. 126/71825 useless extension candidates. Maximal degree in co-relation 297380. Up to 23096 conditions per place. [2021-12-06 21:04:42,132 INFO L132 encePairwiseOnDemand]: 110/125 looper letters, 1746 selfloop transitions, 185 changer transitions 0/2015 dead transitions. [2021-12-06 21:04:42,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 2015 transitions, 25141 flow [2021-12-06 21:04:42,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 21:04:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-06 21:04:42,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2040 transitions. [2021-12-06 21:04:42,135 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6044444444444445 [2021-12-06 21:04:42,135 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2040 transitions. [2021-12-06 21:04:42,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2040 transitions. [2021-12-06 21:04:42,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:04:42,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2040 transitions. [2021-12-06 21:04:42,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 75.55555555555556) internal successors, (2040), 27 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:42,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 125.0) internal successors, (3500), 28 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:42,140 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 125.0) internal successors, (3500), 28 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:42,140 INFO L186 Difference]: Start difference. First operand has 566 places, 831 transitions, 11440 flow. Second operand 27 states and 2040 transitions. [2021-12-06 21:04:42,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 2015 transitions, 25141 flow [2021-12-06 21:04:46,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 2015 transitions, 24463 flow, removed 277 selfloop flow, removed 7 redundant places. [2021-12-06 21:04:46,781 INFO L242 Difference]: Finished difference. Result has 599 places, 881 transitions, 12441 flow [2021-12-06 21:04:46,782 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=10969, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=12441, PETRI_PLACES=599, PETRI_TRANSITIONS=881} [2021-12-06 21:04:46,782 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 477 predicate places. [2021-12-06 21:04:46,782 INFO L470 AbstractCegarLoop]: Abstraction has has 599 places, 881 transitions, 12441 flow [2021-12-06 21:04:46,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:46,783 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:04:46,783 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:04:46,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-06 21:04:46,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 21:04:46,984 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:04:46,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:04:46,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2134206369, now seen corresponding path program 12 times [2021-12-06 21:04:46,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:04:46,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103989822] [2021-12-06 21:04:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:04:46,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:04:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:04:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:04:47,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:04:47,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103989822] [2021-12-06 21:04:47,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103989822] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:04:47,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496125815] [2021-12-06 21:04:47,110 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 21:04:47,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:04:47,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:04:47,111 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:04:47,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 21:04:47,200 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-12-06 21:04:47,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:04:47,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:04:47,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:04:47,350 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 13 treesize of output 9 [2021-12-06 21:04:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:04:47,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:04:47,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496125815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:04:47,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:04:47,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-06 21:04:47,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172807951] [2021-12-06 21:04:47,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:04:47,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:04:47,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:04:47,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:04:47,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:04:47,394 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:04:47,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 881 transitions, 12441 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:04:47,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:04:47,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:04:47,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:05:14,947 INFO L129 PetriNetUnfolder]: 28004/73444 cut-off events. [2021-12-06 21:05:14,947 INFO L130 PetriNetUnfolder]: For 508722/508928 co-relation queries the response was YES. [2021-12-06 21:05:17,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 298685 conditions, 73444 events. 28004/73444 cut-off events. For 508722/508928 co-relation queries the response was YES. Maximal size of possible extension queue 1330. Compared 854481 event pairs, 11842 based on Foata normal form. 97/71946 useless extension candidates. Maximal degree in co-relation 298484. Up to 25818 conditions per place. [2021-12-06 21:05:17,869 INFO L132 encePairwiseOnDemand]: 111/125 looper letters, 1554 selfloop transitions, 158 changer transitions 0/1796 dead transitions. [2021-12-06 21:05:17,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 1796 transitions, 23267 flow [2021-12-06 21:05:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 21:05:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-06 21:05:17,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1297 transitions. [2021-12-06 21:05:17,871 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6485 [2021-12-06 21:05:17,871 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1297 transitions. [2021-12-06 21:05:17,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1297 transitions. [2021-12-06 21:05:17,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:05:17,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1297 transitions. [2021-12-06 21:05:17,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 81.0625) internal successors, (1297), 16 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:17,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 125.0) internal successors, (2125), 17 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:17,875 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 125.0) internal successors, (2125), 17 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:17,875 INFO L186 Difference]: Start difference. First operand has 599 places, 881 transitions, 12441 flow. Second operand 16 states and 1297 transitions. [2021-12-06 21:05:17,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 1796 transitions, 23267 flow [2021-12-06 21:05:22,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 1796 transitions, 22880 flow, removed 154 selfloop flow, removed 4 redundant places. [2021-12-06 21:05:22,348 INFO L242 Difference]: Finished difference. Result has 617 places, 897 transitions, 12923 flow [2021-12-06 21:05:22,349 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=12113, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=881, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=12923, PETRI_PLACES=617, PETRI_TRANSITIONS=897} [2021-12-06 21:05:22,349 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 495 predicate places. [2021-12-06 21:05:22,349 INFO L470 AbstractCegarLoop]: Abstraction has has 617 places, 897 transitions, 12923 flow [2021-12-06 21:05:22,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:22,350 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:05:22,350 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:05:22,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-06 21:05:22,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 21:05:22,551 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:05:22,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:05:22,552 INFO L85 PathProgramCache]: Analyzing trace with hash 212547607, now seen corresponding path program 13 times [2021-12-06 21:05:22,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:05:22,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420547304] [2021-12-06 21:05:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:05:22,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:05:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:05:22,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:05:22,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420547304] [2021-12-06 21:05:22,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420547304] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:05:22,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412804393] [2021-12-06 21:05:22,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 21:05:22,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:05:22,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:05:22,713 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:05:22,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 21:05:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:05:22,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:05:22,976 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 13 treesize of output 9 [2021-12-06 21:05:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:05:23,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:05:23,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412804393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:05:23,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:05:23,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-06 21:05:23,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060116631] [2021-12-06 21:05:23,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:05:23,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:05:23,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:05:23,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:05:23,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-06 21:05:23,004 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:05:23,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 897 transitions, 12923 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:23,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:05:23,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:05:23,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:05:51,887 INFO L129 PetriNetUnfolder]: 28221/73735 cut-off events. [2021-12-06 21:05:51,887 INFO L130 PetriNetUnfolder]: For 498607/498857 co-relation queries the response was YES. [2021-12-06 21:05:54,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 301725 conditions, 73735 events. 28221/73735 cut-off events. For 498607/498857 co-relation queries the response was YES. Maximal size of possible extension queue 1447. Compared 857247 event pairs, 11263 based on Foata normal form. 136/72334 useless extension candidates. Maximal degree in co-relation 301517. Up to 23256 conditions per place. [2021-12-06 21:05:55,011 INFO L132 encePairwiseOnDemand]: 110/125 looper letters, 1825 selfloop transitions, 172 changer transitions 0/2081 dead transitions. [2021-12-06 21:05:55,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 2081 transitions, 25791 flow [2021-12-06 21:05:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 21:05:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-06 21:05:55,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2085 transitions. [2021-12-06 21:05:55,014 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6177777777777778 [2021-12-06 21:05:55,014 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2085 transitions. [2021-12-06 21:05:55,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2085 transitions. [2021-12-06 21:05:55,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:05:55,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2085 transitions. [2021-12-06 21:05:55,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 77.22222222222223) internal successors, (2085), 27 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:55,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 125.0) internal successors, (3500), 28 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:55,020 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 125.0) internal successors, (3500), 28 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:55,021 INFO L186 Difference]: Start difference. First operand has 617 places, 897 transitions, 12923 flow. Second operand 27 states and 2085 transitions. [2021-12-06 21:05:55,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 2081 transitions, 25791 flow [2021-12-06 21:05:59,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 2081 transitions, 25506 flow, removed 77 selfloop flow, removed 6 redundant places. [2021-12-06 21:05:59,537 INFO L242 Difference]: Finished difference. Result has 645 places, 913 transitions, 13395 flow [2021-12-06 21:05:59,538 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=12547, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=724, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=13395, PETRI_PLACES=645, PETRI_TRANSITIONS=913} [2021-12-06 21:05:59,538 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 523 predicate places. [2021-12-06 21:05:59,538 INFO L470 AbstractCegarLoop]: Abstraction has has 645 places, 913 transitions, 13395 flow [2021-12-06 21:05:59,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:05:59,538 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:05:59,539 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:05:59,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 21:05:59,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 21:05:59,740 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:05:59,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:05:59,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2091646371, now seen corresponding path program 14 times [2021-12-06 21:05:59,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:05:59,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608627386] [2021-12-06 21:05:59,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:05:59,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:05:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:05:59,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:05:59,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608627386] [2021-12-06 21:05:59,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608627386] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:05:59,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443429950] [2021-12-06 21:05:59,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:05:59,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:05:59,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:05:59,864 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:05:59,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 21:05:59,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 21:05:59,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:05:59,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:05:59,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:06:00,128 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 13 treesize of output 9 [2021-12-06 21:06:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:06:00,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:06:00,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443429950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:00,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:06:00,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-06 21:06:00,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928091553] [2021-12-06 21:06:00,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:00,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:06:00,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:00,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:06:00,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:06:00,161 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:06:00,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 913 transitions, 13395 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:00,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:00,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:06:00,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:06:29,743 INFO L129 PetriNetUnfolder]: 28383/73819 cut-off events. [2021-12-06 21:06:29,743 INFO L130 PetriNetUnfolder]: For 498956/499170 co-relation queries the response was YES. [2021-12-06 21:06:32,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304156 conditions, 73819 events. 28383/73819 cut-off events. For 498956/499170 co-relation queries the response was YES. Maximal size of possible extension queue 1565. Compared 858937 event pairs, 11854 based on Foata normal form. 124/72437 useless extension candidates. Maximal degree in co-relation 303940. Up to 24837 conditions per place. [2021-12-06 21:06:32,992 INFO L132 encePairwiseOnDemand]: 110/125 looper letters, 1456 selfloop transitions, 182 changer transitions 0/1722 dead transitions. [2021-12-06 21:06:32,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 1722 transitions, 23083 flow [2021-12-06 21:06:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 21:06:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-06 21:06:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1693 transitions. [2021-12-06 21:06:32,995 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5888695652173913 [2021-12-06 21:06:32,995 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1693 transitions. [2021-12-06 21:06:32,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1693 transitions. [2021-12-06 21:06:32,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:06:32,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1693 transitions. [2021-12-06 21:06:32,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 73.6086956521739) internal successors, (1693), 23 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:32,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 125.0) internal successors, (3000), 24 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:32,999 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 125.0) internal successors, (3000), 24 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:32,999 INFO L186 Difference]: Start difference. First operand has 645 places, 913 transitions, 13395 flow. Second operand 23 states and 1693 transitions. [2021-12-06 21:06:32,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 1722 transitions, 23083 flow [2021-12-06 21:06:36,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 1722 transitions, 22700 flow, removed 84 selfloop flow, removed 19 redundant places. [2021-12-06 21:06:36,926 INFO L242 Difference]: Finished difference. Result has 657 places, 928 transitions, 13805 flow [2021-12-06 21:06:36,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=12914, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=909, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13805, PETRI_PLACES=657, PETRI_TRANSITIONS=928} [2021-12-06 21:06:36,927 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 535 predicate places. [2021-12-06 21:06:36,927 INFO L470 AbstractCegarLoop]: Abstraction has has 657 places, 928 transitions, 13805 flow [2021-12-06 21:06:36,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:36,927 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:06:36,927 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:36,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-06 21:06:37,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:06:37,129 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:06:37,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:37,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1592921043, now seen corresponding path program 15 times [2021-12-06 21:06:37,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:37,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474191609] [2021-12-06 21:06:37,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:37,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:06:37,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:37,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474191609] [2021-12-06 21:06:37,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474191609] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:06:37,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791436734] [2021-12-06 21:06:37,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 21:06:37,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:06:37,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:06:37,244 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:06:37,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 21:06:37,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-06 21:06:37,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:06:37,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:06:37,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:06:37,491 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 13 treesize of output 9 [2021-12-06 21:06:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:06:37,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:06:37,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791436734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:06:37,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:06:37,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-06 21:06:37,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470622010] [2021-12-06 21:06:37,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:06:37,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:06:37,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:06:37,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:06:37,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:06:37,519 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:06:37,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 928 transitions, 13805 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:06:37,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:06:37,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:06:37,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:07:07,265 INFO L129 PetriNetUnfolder]: 27408/70893 cut-off events. [2021-12-06 21:07:07,265 INFO L130 PetriNetUnfolder]: For 511511/511866 co-relation queries the response was YES. [2021-12-06 21:07:10,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 296303 conditions, 70893 events. 27408/70893 cut-off events. For 511511/511866 co-relation queries the response was YES. Maximal size of possible extension queue 1516. Compared 813414 event pairs, 6916 based on Foata normal form. 191/69693 useless extension candidates. Maximal degree in co-relation 296082. Up to 21141 conditions per place. [2021-12-06 21:07:10,453 INFO L132 encePairwiseOnDemand]: 110/125 looper letters, 1347 selfloop transitions, 376 changer transitions 0/1807 dead transitions. [2021-12-06 21:07:10,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 1807 transitions, 24720 flow [2021-12-06 21:07:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 21:07:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-06 21:07:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2190 transitions. [2021-12-06 21:07:10,456 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5651612903225807 [2021-12-06 21:07:10,456 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2190 transitions. [2021-12-06 21:07:10,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2190 transitions. [2021-12-06 21:07:10,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:07:10,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2190 transitions. [2021-12-06 21:07:10,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 70.64516129032258) internal successors, (2190), 31 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:10,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 125.0) internal successors, (4000), 32 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:10,461 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 125.0) internal successors, (4000), 32 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:10,461 INFO L186 Difference]: Start difference. First operand has 657 places, 928 transitions, 13805 flow. Second operand 31 states and 2190 transitions. [2021-12-06 21:07:10,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 1807 transitions, 24720 flow [2021-12-06 21:07:14,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 1807 transitions, 24282 flow, removed 96 selfloop flow, removed 13 redundant places. [2021-12-06 21:07:14,702 INFO L242 Difference]: Finished difference. Result has 695 places, 962 transitions, 15087 flow [2021-12-06 21:07:14,703 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=13330, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=925, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=15087, PETRI_PLACES=695, PETRI_TRANSITIONS=962} [2021-12-06 21:07:14,703 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 573 predicate places. [2021-12-06 21:07:14,704 INFO L470 AbstractCegarLoop]: Abstraction has has 695 places, 962 transitions, 15087 flow [2021-12-06 21:07:14,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:14,704 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:07:14,704 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:07:14,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-06 21:07:14,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 21:07:14,905 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:07:14,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:07:14,906 INFO L85 PathProgramCache]: Analyzing trace with hash -830835949, now seen corresponding path program 16 times [2021-12-06 21:07:14,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:07:14,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65881804] [2021-12-06 21:07:14,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:07:14,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:07:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:07:15,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:07:15,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65881804] [2021-12-06 21:07:15,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65881804] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:07:15,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090143414] [2021-12-06 21:07:15,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 21:07:15,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:07:15,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:07:15,072 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:07:15,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 21:07:15,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 21:07:15,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:07:15,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 21:07:15,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:07:15,346 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 13 treesize of output 9 [2021-12-06 21:07:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:07:15,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:07:15,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090143414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:07:15,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:07:15,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-12-06 21:07:15,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597120083] [2021-12-06 21:07:15,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:07:15,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:07:15,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:07:15,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:07:15,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:07:15,378 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:07:15,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 962 transitions, 15087 flow. Second operand has 9 states, 9 states have (on average 56.666666666666664) internal successors, (510), 9 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:15,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:07:15,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:07:15,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:07:45,788 INFO L129 PetriNetUnfolder]: 27482/71186 cut-off events. [2021-12-06 21:07:45,788 INFO L130 PetriNetUnfolder]: For 564539/564907 co-relation queries the response was YES. [2021-12-06 21:07:49,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 301449 conditions, 71186 events. 27482/71186 cut-off events. For 564539/564907 co-relation queries the response was YES. Maximal size of possible extension queue 1512. Compared 817476 event pairs, 5996 based on Foata normal form. 191/69974 useless extension candidates. Maximal degree in co-relation 301208. Up to 19992 conditions per place. [2021-12-06 21:07:49,342 INFO L132 encePairwiseOnDemand]: 112/125 looper letters, 1764 selfloop transitions, 343 changer transitions 0/2191 dead transitions. [2021-12-06 21:07:49,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 719 places, 2191 transitions, 29081 flow [2021-12-06 21:07:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 21:07:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-06 21:07:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1950 transitions. [2021-12-06 21:07:49,344 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.624 [2021-12-06 21:07:49,344 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1950 transitions. [2021-12-06 21:07:49,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1950 transitions. [2021-12-06 21:07:49,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:07:49,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1950 transitions. [2021-12-06 21:07:49,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 78.0) internal successors, (1950), 25 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:49,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 125.0) internal successors, (3250), 26 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:49,348 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 125.0) internal successors, (3250), 26 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:49,348 INFO L186 Difference]: Start difference. First operand has 695 places, 962 transitions, 15087 flow. Second operand 25 states and 1950 transitions. [2021-12-06 21:07:49,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 719 places, 2191 transitions, 29081 flow [2021-12-06 21:07:54,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 2191 transitions, 28150 flow, removed 236 selfloop flow, removed 11 redundant places. [2021-12-06 21:07:54,085 INFO L242 Difference]: Finished difference. Result has 720 places, 981 transitions, 15474 flow [2021-12-06 21:07:54,086 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=14171, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=15474, PETRI_PLACES=720, PETRI_TRANSITIONS=981} [2021-12-06 21:07:54,086 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 598 predicate places. [2021-12-06 21:07:54,086 INFO L470 AbstractCegarLoop]: Abstraction has has 720 places, 981 transitions, 15474 flow [2021-12-06 21:07:54,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.666666666666664) internal successors, (510), 9 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:54,086 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:07:54,086 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:07:54,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 21:07:54,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:07:54,288 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:07:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:07:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash 727194997, now seen corresponding path program 17 times [2021-12-06 21:07:54,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:07:54,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245288083] [2021-12-06 21:07:54,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:07:54,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:07:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:07:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:07:54,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:07:54,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245288083] [2021-12-06 21:07:54,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245288083] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:07:54,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602542048] [2021-12-06 21:07:54,415 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 21:07:54,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:07:54,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:07:54,415 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:07:54,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 21:07:54,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-12-06 21:07:54,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:07:54,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:07:54,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:07:54,718 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 13 treesize of output 9 [2021-12-06 21:07:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:07:54,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:07:54,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602542048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:07:54,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:07:54,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-06 21:07:54,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239672005] [2021-12-06 21:07:54,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:07:54,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:07:54,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:07:54,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:07:54,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-12-06 21:07:54,749 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:07:54,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 981 transitions, 15474 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:07:54,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:07:54,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:07:54,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:08:28,284 INFO L129 PetriNetUnfolder]: 28616/74035 cut-off events. [2021-12-06 21:08:28,284 INFO L130 PetriNetUnfolder]: For 610803/611128 co-relation queries the response was YES. [2021-12-06 21:08:31,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 316973 conditions, 74035 events. 28616/74035 cut-off events. For 610803/611128 co-relation queries the response was YES. Maximal size of possible extension queue 1599. Compared 856277 event pairs, 8563 based on Foata normal form. 146/72707 useless extension candidates. Maximal degree in co-relation 316722. Up to 27251 conditions per place. [2021-12-06 21:08:32,063 INFO L132 encePairwiseOnDemand]: 110/125 looper letters, 1865 selfloop transitions, 206 changer transitions 0/2155 dead transitions. [2021-12-06 21:08:32,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 750 places, 2155 transitions, 29367 flow [2021-12-06 21:08:32,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 21:08:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-06 21:08:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2309 transitions. [2021-12-06 21:08:32,066 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5958709677419355 [2021-12-06 21:08:32,066 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2309 transitions. [2021-12-06 21:08:32,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2309 transitions. [2021-12-06 21:08:32,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:08:32,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2309 transitions. [2021-12-06 21:08:32,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 74.48387096774194) internal successors, (2309), 31 states have internal predecessors, (2309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:32,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 125.0) internal successors, (4000), 32 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:32,071 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 125.0) internal successors, (4000), 32 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:32,072 INFO L186 Difference]: Start difference. First operand has 720 places, 981 transitions, 15474 flow. Second operand 31 states and 2309 transitions. [2021-12-06 21:08:32,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 750 places, 2155 transitions, 29367 flow [2021-12-06 21:08:37,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 2155 transitions, 28438 flow, removed 332 selfloop flow, removed 15 redundant places. [2021-12-06 21:08:37,761 INFO L242 Difference]: Finished difference. Result has 756 places, 1032 transitions, 16600 flow [2021-12-06 21:08:37,762 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=14903, PETRI_DIFFERENCE_MINUEND_PLACES=705, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=981, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=799, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=16600, PETRI_PLACES=756, PETRI_TRANSITIONS=1032} [2021-12-06 21:08:37,762 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 634 predicate places. [2021-12-06 21:08:37,762 INFO L470 AbstractCegarLoop]: Abstraction has has 756 places, 1032 transitions, 16600 flow [2021-12-06 21:08:37,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:37,763 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:08:37,763 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:08:37,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-06 21:08:37,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:37,964 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:08:37,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:08:37,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1973983209, now seen corresponding path program 18 times [2021-12-06 21:08:37,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:08:37,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150878714] [2021-12-06 21:08:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:08:37,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:08:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:08:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:08:38,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:08:38,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150878714] [2021-12-06 21:08:38,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150878714] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:08:38,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264690220] [2021-12-06 21:08:38,166 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 21:08:38,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:08:38,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:08:38,167 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:08:38,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-06 21:08:38,254 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-12-06 21:08:38,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:08:38,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:08:38,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:08:38,403 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 13 treesize of output 9 [2021-12-06 21:08:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:08:38,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:08:38,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264690220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:08:38,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:08:38,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-06 21:08:38,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185114291] [2021-12-06 21:08:38,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:08:38,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:08:38,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:08:38,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:08:38,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-06 21:08:38,433 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:08:38,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 756 places, 1032 transitions, 16600 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:08:38,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:08:38,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:08:38,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:09:14,161 INFO L129 PetriNetUnfolder]: 29742/77179 cut-off events. [2021-12-06 21:09:14,161 INFO L130 PetriNetUnfolder]: For 601634/601982 co-relation queries the response was YES. [2021-12-06 21:09:18,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 327587 conditions, 77179 events. 29742/77179 cut-off events. For 601634/601982 co-relation queries the response was YES. Maximal size of possible extension queue 1704. Compared 902077 event pairs, 8657 based on Foata normal form. 170/75811 useless extension candidates. Maximal degree in co-relation 327325. Up to 27623 conditions per place. [2021-12-06 21:09:18,471 INFO L132 encePairwiseOnDemand]: 110/125 looper letters, 1949 selfloop transitions, 248 changer transitions 0/2281 dead transitions. [2021-12-06 21:09:18,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 786 places, 2281 transitions, 30768 flow [2021-12-06 21:09:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 21:09:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-06 21:09:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2346 transitions. [2021-12-06 21:09:18,474 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6054193548387097 [2021-12-06 21:09:18,474 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2346 transitions. [2021-12-06 21:09:18,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2346 transitions. [2021-12-06 21:09:18,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:09:18,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2346 transitions. [2021-12-06 21:09:18,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 75.6774193548387) internal successors, (2346), 31 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:09:18,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 125.0) internal successors, (4000), 32 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:09:18,479 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 125.0) internal successors, (4000), 32 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:09:18,479 INFO L186 Difference]: Start difference. First operand has 756 places, 1032 transitions, 16600 flow. Second operand 31 states and 2346 transitions. [2021-12-06 21:09:18,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 786 places, 2281 transitions, 30768 flow [2021-12-06 21:09:24,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 778 places, 2281 transitions, 30354 flow, removed 162 selfloop flow, removed 8 redundant places. [2021-12-06 21:09:24,144 INFO L242 Difference]: Finished difference. Result has 788 places, 1075 transitions, 17849 flow [2021-12-06 21:09:24,145 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=16238, PETRI_DIFFERENCE_MINUEND_PLACES=748, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1032, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=808, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=17849, PETRI_PLACES=788, PETRI_TRANSITIONS=1075} [2021-12-06 21:09:24,146 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 666 predicate places. [2021-12-06 21:09:24,146 INFO L470 AbstractCegarLoop]: Abstraction has has 788 places, 1075 transitions, 17849 flow [2021-12-06 21:09:24,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:09:24,146 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:09:24,146 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:09:24,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-12-06 21:09:24,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-06 21:09:24,348 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:09:24,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:09:24,349 INFO L85 PathProgramCache]: Analyzing trace with hash -381623737, now seen corresponding path program 19 times [2021-12-06 21:09:24,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:09:24,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910545128] [2021-12-06 21:09:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:09:24,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:09:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:09:24,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:09:24,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910545128] [2021-12-06 21:09:24,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910545128] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:09:24,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999947718] [2021-12-06 21:09:24,518 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 21:09:24,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:09:24,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:09:24,519 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:09:24,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-06 21:09:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:09:24,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:09:24,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:09:24,823 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 13 treesize of output 9 [2021-12-06 21:09:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:09:24,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:09:24,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999947718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:09:24,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:09:24,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-06 21:09:24,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809730398] [2021-12-06 21:09:24,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:09:24,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:09:24,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:09:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:09:24,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-06 21:09:24,852 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:09:24,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 788 places, 1075 transitions, 17849 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:09:24,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:09:24,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:09:24,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 21:10:01,930 INFO L129 PetriNetUnfolder]: 29494/76350 cut-off events. [2021-12-06 21:10:01,930 INFO L130 PetriNetUnfolder]: For 619746/620115 co-relation queries the response was YES. [2021-12-06 21:10:05,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 326960 conditions, 76350 events. 29494/76350 cut-off events. For 619746/620115 co-relation queries the response was YES. Maximal size of possible extension queue 1759. Compared 890728 event pairs, 8711 based on Foata normal form. 185/75053 useless extension candidates. Maximal degree in co-relation 326690. Up to 27756 conditions per place. [2021-12-06 21:10:06,243 INFO L132 encePairwiseOnDemand]: 110/125 looper letters, 1747 selfloop transitions, 232 changer transitions 0/2063 dead transitions. [2021-12-06 21:10:06,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 2063 transitions, 29128 flow [2021-12-06 21:10:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 21:10:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-12-06 21:10:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2444 transitions. [2021-12-06 21:10:06,246 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5924848484848485 [2021-12-06 21:10:06,246 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2444 transitions. [2021-12-06 21:10:06,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2444 transitions. [2021-12-06 21:10:06,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 21:10:06,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2444 transitions. [2021-12-06 21:10:06,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 74.06060606060606) internal successors, (2444), 33 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:10:06,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 125.0) internal successors, (4250), 34 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:10:06,251 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 125.0) internal successors, (4250), 34 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:10:06,252 INFO L186 Difference]: Start difference. First operand has 788 places, 1075 transitions, 17849 flow. Second operand 33 states and 2444 transitions. [2021-12-06 21:10:06,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 2063 transitions, 29128 flow [2021-12-06 21:10:11,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 806 places, 2063 transitions, 28500 flow, removed 159 selfloop flow, removed 13 redundant places. [2021-12-06 21:10:11,894 INFO L242 Difference]: Finished difference. Result has 816 places, 1095 transitions, 18395 flow [2021-12-06 21:10:11,895 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=17162, PETRI_DIFFERENCE_MINUEND_PLACES=774, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=844, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=18395, PETRI_PLACES=816, PETRI_TRANSITIONS=1095} [2021-12-06 21:10:11,895 INFO L334 CegarLoopForPetriNet]: 122 programPoint places, 694 predicate places. [2021-12-06 21:10:11,895 INFO L470 AbstractCegarLoop]: Abstraction has has 816 places, 1095 transitions, 18395 flow [2021-12-06 21:10:11,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:10:11,895 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 21:10:11,895 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:10:11,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-06 21:10:12,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-06 21:10:12,097 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-06 21:10:12,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:10:12,098 INFO L85 PathProgramCache]: Analyzing trace with hash 600816987, now seen corresponding path program 20 times [2021-12-06 21:10:12,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:10:12,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517391745] [2021-12-06 21:10:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:10:12,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:10:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:10:12,240 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-06 21:10:12,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:10:12,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517391745] [2021-12-06 21:10:12,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517391745] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:10:12,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891123839] [2021-12-06 21:10:12,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:10:12,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:10:12,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:10:12,241 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:10:12,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac3652a-54fe-4b4a-8d90-2c6a6b83f71d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-06 21:10:12,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 21:10:12,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:10:12,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 21:10:12,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:10:12,454 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 13 treesize of output 9 [2021-12-06 21:10:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 21:10:12,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:10:12,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891123839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:10:12,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:10:12,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-06 21:10:12,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103870891] [2021-12-06 21:10:12,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:10:12,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:10:12,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:10:12,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:10:12,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-12-06 21:10:12,518 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2021-12-06 21:10:12,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 816 places, 1095 transitions, 18395 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:10:12,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 21:10:12,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2021-12-06 21:10:12,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand