./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN --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 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:51:07,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:51:07,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:51:08,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:51:08,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:51:08,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:51:08,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:51:08,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:51:08,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:51:08,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:51:08,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:51:08,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:51:08,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:51:08,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:51:08,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:51:08,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:51:08,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:51:08,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:51:08,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:51:08,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:51:08,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:51:08,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:51:08,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:51:08,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:51:08,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:51:08,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:51:08,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:51:08,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:51:08,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:51:08,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:51:08,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:51:08,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:51:08,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:51:08,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:51:08,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:51:08,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:51:08,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:51:08,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:51:08,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:51:08,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:51:08,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:51:08,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 11:51:08,171 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:51:08,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:51:08,172 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:51:08,173 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:51:08,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:51:08,174 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:51:08,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:51:08,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:51:08,176 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:51:08,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:51:08,178 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:51:08,178 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:51:08,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:51:08,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:51:08,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:51:08,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:51:08,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:51:08,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:51:08,180 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 11:51:08,180 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:51:08,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:51:08,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:51:08,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:51:08,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:51:08,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:51:08,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:51:08,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:51:08,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:51:08,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:51:08,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:51:08,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:51:08,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:51:08,184 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:51:08,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:51:08,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:51:08,185 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_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2022-11-20 11:51:08,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:51:08,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:51:08,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:51:08,506 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:51:08,506 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:51:08,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-20 11:51:11,771 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:51:12,160 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:51:12,165 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-20 11:51:12,196 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/data/210590d50/6503c0dfaae742898ec680c0b2c99770/FLAG68ab634b7 [2022-11-20 11:51:12,216 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/data/210590d50/6503c0dfaae742898ec680c0b2c99770 [2022-11-20 11:51:12,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:51:12,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:51:12,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:51:12,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:51:12,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:51:12,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:51:12" (1/1) ... [2022-11-20 11:51:12,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c5e24d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:12, skipping insertion in model container [2022-11-20 11:51:12,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:51:12" (1/1) ... [2022-11-20 11:51:12,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:51:12,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:51:13,179 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:51:13,184 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:51:13,190 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:51:13,195 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:51:13,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:51:13,282 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:51:13,352 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:51:13,358 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:51:13,361 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:51:13,362 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:51:13,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:51:13,460 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:51:13,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13 WrapperNode [2022-11-20 11:51:13,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:51:13,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:51:13,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:51:13,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:51:13,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13" (1/1) ... [2022-11-20 11:51:13,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13" (1/1) ... [2022-11-20 11:51:13,578 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 207 [2022-11-20 11:51:13,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:51:13,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:51:13,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:51:13,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:51:13,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13" (1/1) ... [2022-11-20 11:51:13,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13" (1/1) ... [2022-11-20 11:51:13,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13" (1/1) ... [2022-11-20 11:51:13,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13" (1/1) ... [2022-11-20 11:51:13,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13" (1/1) ... [2022-11-20 11:51:13,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13" (1/1) ... [2022-11-20 11:51:13,673 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13" (1/1) ... [2022-11-20 11:51:13,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13" (1/1) ... [2022-11-20 11:51:13,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:51:13,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:51:13,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:51:13,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:51:13,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13" (1/1) ... [2022-11-20 11:51:13,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:51:13,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:13,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:51:13,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:51:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-20 11:51:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-20 11:51:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:51:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:51:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:51:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:51:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:51:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:51:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:51:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:51:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:51:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:51:13,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:51:13,791 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:51:14,021 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:51:14,024 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:51:14,677 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:51:14,688 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:51:14,699 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:51:14,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:51:14 BoogieIcfgContainer [2022-11-20 11:51:14,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:51:14,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:51:14,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:51:14,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:51:14,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:51:12" (1/3) ... [2022-11-20 11:51:14,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d6b577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:51:14, skipping insertion in model container [2022-11-20 11:51:14,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13" (2/3) ... [2022-11-20 11:51:14,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d6b577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:51:14, skipping insertion in model container [2022-11-20 11:51:14,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:51:14" (3/3) ... [2022-11-20 11:51:14,723 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2022-11-20 11:51:14,733 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:51:14,750 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:51:14,750 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-20 11:51:14,750 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:51:14,976 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:51:15,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 305 transitions, 620 flow [2022-11-20 11:51:15,159 INFO L130 PetriNetUnfolder]: 14/303 cut-off events. [2022-11-20 11:51:15,159 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:51:15,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 303 events. 14/303 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 587 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 226. Up to 2 conditions per place. [2022-11-20 11:51:15,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 305 transitions, 620 flow [2022-11-20 11:51:15,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 303 transitions, 612 flow [2022-11-20 11:51:15,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:51:15,206 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4f95e8ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:51:15,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-20 11:51:15,226 INFO L130 PetriNetUnfolder]: 1/45 cut-off events. [2022-11-20 11:51:15,227 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:51:15,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:15,228 INFO L209 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] [2022-11-20 11:51:15,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:15,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:15,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1165101949, now seen corresponding path program 1 times [2022-11-20 11:51:15,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:15,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656189109] [2022-11-20 11:51:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:15,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:16,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:16,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656189109] [2022-11-20 11:51:16,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656189109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:16,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:16,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:51:16,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325110349] [2022-11-20 11:51:16,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:16,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:51:16,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:16,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:51:16,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:51:16,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 305 [2022-11-20 11:51:16,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 303 transitions, 612 flow. Second operand has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:16,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:16,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 305 [2022-11-20 11:51:16,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:17,653 INFO L130 PetriNetUnfolder]: 744/2618 cut-off events. [2022-11-20 11:51:17,654 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-20 11:51:17,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4122 conditions, 2618 events. 744/2618 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17647 event pairs, 600 based on Foata normal form. 247/2494 useless extension candidates. Maximal degree in co-relation 3898. Up to 1439 conditions per place. [2022-11-20 11:51:17,693 INFO L137 encePairwiseOnDemand]: 285/305 looper letters, 110 selfloop transitions, 10 changer transitions 0/293 dead transitions. [2022-11-20 11:51:17,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 293 transitions, 832 flow [2022-11-20 11:51:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:51:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:51:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1180 transitions. [2022-11-20 11:51:17,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.644808743169399 [2022-11-20 11:51:17,717 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1180 transitions. [2022-11-20 11:51:17,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1180 transitions. [2022-11-20 11:51:17,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:17,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1180 transitions. [2022-11-20 11:51:17,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.66666666666666) internal successors, (1180), 6 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:17,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:17,747 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:17,749 INFO L175 Difference]: Start difference. First operand has 296 places, 303 transitions, 612 flow. Second operand 6 states and 1180 transitions. [2022-11-20 11:51:17,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 293 transitions, 832 flow [2022-11-20 11:51:17,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 293 transitions, 830 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:51:17,765 INFO L231 Difference]: Finished difference. Result has 297 places, 293 transitions, 610 flow [2022-11-20 11:51:17,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=610, PETRI_PLACES=297, PETRI_TRANSITIONS=293} [2022-11-20 11:51:17,772 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 1 predicate places. [2022-11-20 11:51:17,773 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 293 transitions, 610 flow [2022-11-20 11:51:17,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:17,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:17,774 INFO L209 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] [2022-11-20 11:51:17,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:51:17,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:17,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash -963911608, now seen corresponding path program 1 times [2022-11-20 11:51:17,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:17,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530592718] [2022-11-20 11:51:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:17,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:18,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:18,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530592718] [2022-11-20 11:51:18,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530592718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:18,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:18,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:51:18,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12012203] [2022-11-20 11:51:18,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:18,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:51:18,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:18,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:51:18,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:51:18,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 305 [2022-11-20 11:51:18,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 293 transitions, 610 flow. Second operand has 6 states, 6 states have (on average 177.5) internal successors, (1065), 6 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:18,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:18,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 305 [2022-11-20 11:51:18,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:19,312 INFO L130 PetriNetUnfolder]: 744/2616 cut-off events. [2022-11-20 11:51:19,313 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:51:19,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4127 conditions, 2616 events. 744/2616 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17583 event pairs, 600 based on Foata normal form. 0/2247 useless extension candidates. Maximal degree in co-relation 3931. Up to 1437 conditions per place. [2022-11-20 11:51:19,339 INFO L137 encePairwiseOnDemand]: 293/305 looper letters, 108 selfloop transitions, 10 changer transitions 0/291 dead transitions. [2022-11-20 11:51:19,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 291 transitions, 842 flow [2022-11-20 11:51:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:51:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:51:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1170 transitions. [2022-11-20 11:51:19,344 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.639344262295082 [2022-11-20 11:51:19,344 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1170 transitions. [2022-11-20 11:51:19,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1170 transitions. [2022-11-20 11:51:19,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:19,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1170 transitions. [2022-11-20 11:51:19,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:19,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:19,357 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:19,357 INFO L175 Difference]: Start difference. First operand has 297 places, 293 transitions, 610 flow. Second operand 6 states and 1170 transitions. [2022-11-20 11:51:19,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 291 transitions, 842 flow [2022-11-20 11:51:19,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 291 transitions, 822 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:51:19,370 INFO L231 Difference]: Finished difference. Result has 295 places, 291 transitions, 606 flow [2022-11-20 11:51:19,371 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=606, PETRI_PLACES=295, PETRI_TRANSITIONS=291} [2022-11-20 11:51:19,372 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, -1 predicate places. [2022-11-20 11:51:19,373 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 291 transitions, 606 flow [2022-11-20 11:51:19,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.5) internal successors, (1065), 6 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:19,374 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:19,375 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:19,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:51:19,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:19,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:19,377 INFO L85 PathProgramCache]: Analyzing trace with hash 903544362, now seen corresponding path program 1 times [2022-11-20 11:51:19,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:19,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532019334] [2022-11-20 11:51:19,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:19,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:19,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:19,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532019334] [2022-11-20 11:51:19,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532019334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:19,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:19,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:51:19,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236140212] [2022-11-20 11:51:19,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:19,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:51:19,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:19,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:51:19,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:51:19,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 305 [2022-11-20 11:51:19,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 291 transitions, 606 flow. Second operand has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:19,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:19,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 305 [2022-11-20 11:51:19,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:19,633 INFO L130 PetriNetUnfolder]: 7/415 cut-off events. [2022-11-20 11:51:19,634 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:51:19,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 415 events. 7/415 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1021 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 218. Up to 13 conditions per place. [2022-11-20 11:51:19,638 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 17 selfloop transitions, 2 changer transitions 0/298 dead transitions. [2022-11-20 11:51:19,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 298 transitions, 658 flow [2022-11-20 11:51:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:51:19,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:51:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 875 transitions. [2022-11-20 11:51:19,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9562841530054644 [2022-11-20 11:51:19,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 875 transitions. [2022-11-20 11:51:19,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 875 transitions. [2022-11-20 11:51:19,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:19,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 875 transitions. [2022-11-20 11:51:19,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.6666666666667) internal successors, (875), 3 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) [2022-11-20 11:51:19,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:19,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:19,652 INFO L175 Difference]: Start difference. First operand has 295 places, 291 transitions, 606 flow. Second operand 3 states and 875 transitions. [2022-11-20 11:51:19,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 298 transitions, 658 flow [2022-11-20 11:51:19,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 298 transitions, 638 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:51:19,661 INFO L231 Difference]: Finished difference. Result has 293 places, 292 transitions, 598 flow [2022-11-20 11:51:19,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=598, PETRI_PLACES=293, PETRI_TRANSITIONS=292} [2022-11-20 11:51:19,663 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, -3 predicate places. [2022-11-20 11:51:19,663 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 292 transitions, 598 flow [2022-11-20 11:51:19,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:19,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:19,665 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:19,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:51:19,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:19,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1083273916, now seen corresponding path program 1 times [2022-11-20 11:51:19,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:19,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644548578] [2022-11-20 11:51:19,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:19,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:19,696 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:51:19,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6314040] [2022-11-20 11:51:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:19,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:19,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:19,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:19,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:51:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:19,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 11:51:19,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:20,062 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:51:20,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:51:20,108 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:51:20,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:51:20,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:51:20,161 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:20,162 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:51:20,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:51:20,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:51:20,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:51:20,228 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:20,229 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:51:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:20,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:51:20,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:20,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644548578] [2022-11-20 11:51:20,284 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:51:20,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6314040] [2022-11-20 11:51:20,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6314040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:20,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:20,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:51:20,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089381670] [2022-11-20 11:51:20,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:20,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:51:20,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:20,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:51:20,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:51:20,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 305 [2022-11-20 11:51:20,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 292 transitions, 598 flow. Second operand has 8 states, 8 states have (on average 180.625) internal successors, (1445), 8 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:20,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:20,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 305 [2022-11-20 11:51:20,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:22,088 INFO L130 PetriNetUnfolder]: 1489/5255 cut-off events. [2022-11-20 11:51:22,089 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:51:22,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8268 conditions, 5255 events. 1489/5255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 36051 event pairs, 1200 based on Foata normal form. 0/4523 useless extension candidates. Maximal degree in co-relation 4106. Up to 1480 conditions per place. [2022-11-20 11:51:22,139 INFO L137 encePairwiseOnDemand]: 295/305 looper letters, 166 selfloop transitions, 9 changer transitions 0/352 dead transitions. [2022-11-20 11:51:22,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 352 transitions, 1072 flow [2022-11-20 11:51:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:51:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:51:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1778 transitions. [2022-11-20 11:51:22,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6477231329690346 [2022-11-20 11:51:22,146 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1778 transitions. [2022-11-20 11:51:22,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1778 transitions. [2022-11-20 11:51:22,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:22,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1778 transitions. [2022-11-20 11:51:22,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 197.55555555555554) internal successors, (1778), 9 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:22,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:22,161 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:22,161 INFO L175 Difference]: Start difference. First operand has 293 places, 292 transitions, 598 flow. Second operand 9 states and 1778 transitions. [2022-11-20 11:51:22,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 352 transitions, 1072 flow [2022-11-20 11:51:22,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 352 transitions, 1070 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:51:22,169 INFO L231 Difference]: Finished difference. Result has 300 places, 292 transitions, 620 flow [2022-11-20 11:51:22,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=620, PETRI_PLACES=300, PETRI_TRANSITIONS=292} [2022-11-20 11:51:22,171 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 4 predicate places. [2022-11-20 11:51:22,172 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 292 transitions, 620 flow [2022-11-20 11:51:22,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 180.625) internal successors, (1445), 8 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:22,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:22,173 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:22,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:22,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:22,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:22,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:22,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1268327861, now seen corresponding path program 1 times [2022-11-20 11:51:22,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:22,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254463105] [2022-11-20 11:51:22,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:22,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:22,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:22,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254463105] [2022-11-20 11:51:22,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254463105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:22,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:22,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:51:22,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272804163] [2022-11-20 11:51:22,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:22,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:51:22,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:22,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:51:22,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:51:22,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 305 [2022-11-20 11:51:22,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 292 transitions, 620 flow. Second operand has 3 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:22,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:22,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 305 [2022-11-20 11:51:22,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:22,686 INFO L130 PetriNetUnfolder]: 7/603 cut-off events. [2022-11-20 11:51:22,686 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 11:51:22,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 603 events. 7/603 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1003 event pairs, 0 based on Foata normal form. 0/567 useless extension candidates. Maximal degree in co-relation 282. Up to 16 conditions per place. [2022-11-20 11:51:22,690 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 11 selfloop transitions, 2 changer transitions 0/296 dead transitions. [2022-11-20 11:51:22,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 296 transitions, 654 flow [2022-11-20 11:51:22,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:51:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:51:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 878 transitions. [2022-11-20 11:51:22,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9595628415300547 [2022-11-20 11:51:22,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 878 transitions. [2022-11-20 11:51:22,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 878 transitions. [2022-11-20 11:51:22,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:22,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 878 transitions. [2022-11-20 11:51:22,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:22,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:22,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:22,703 INFO L175 Difference]: Start difference. First operand has 300 places, 292 transitions, 620 flow. Second operand 3 states and 878 transitions. [2022-11-20 11:51:22,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 296 transitions, 654 flow [2022-11-20 11:51:22,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 296 transitions, 640 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 11:51:22,712 INFO L231 Difference]: Finished difference. Result has 296 places, 293 transitions, 618 flow [2022-11-20 11:51:22,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=618, PETRI_PLACES=296, PETRI_TRANSITIONS=293} [2022-11-20 11:51:22,714 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 0 predicate places. [2022-11-20 11:51:22,714 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 293 transitions, 618 flow [2022-11-20 11:51:22,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:22,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:22,715 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:22,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:51:22,716 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:22,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:22,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1507695787, now seen corresponding path program 1 times [2022-11-20 11:51:22,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:22,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351309029] [2022-11-20 11:51:22,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:22,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:22,755 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:51:22,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787540152] [2022-11-20 11:51:22,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:22,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:22,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:22,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:22,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:51:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:22,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:51:22,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:23,003 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:51:23,018 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:51:23,052 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:23,052 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 11:51:23,100 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:23,101 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 11:51:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:23,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:51:23,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:23,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351309029] [2022-11-20 11:51:23,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:51:23,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787540152] [2022-11-20 11:51:23,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787540152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:23,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:23,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:51:23,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480455290] [2022-11-20 11:51:23,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:23,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:51:23,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:23,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:51:23,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:51:23,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 305 [2022-11-20 11:51:23,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 293 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:23,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:23,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 305 [2022-11-20 11:51:23,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:24,094 INFO L130 PetriNetUnfolder]: 745/2924 cut-off events. [2022-11-20 11:51:24,094 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 11:51:24,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4606 conditions, 2924 events. 745/2924 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18396 event pairs, 600 based on Foata normal form. 0/2547 useless extension candidates. Maximal degree in co-relation 4095. Up to 1575 conditions per place. [2022-11-20 11:51:24,190 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 104 selfloop transitions, 5 changer transitions 0/292 dead transitions. [2022-11-20 11:51:24,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 292 transitions, 834 flow [2022-11-20 11:51:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:51:24,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:51:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1202 transitions. [2022-11-20 11:51:24,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6568306010928961 [2022-11-20 11:51:24,195 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1202 transitions. [2022-11-20 11:51:24,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1202 transitions. [2022-11-20 11:51:24,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:24,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1202 transitions. [2022-11-20 11:51:24,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:24,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:24,204 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:24,204 INFO L175 Difference]: Start difference. First operand has 296 places, 293 transitions, 618 flow. Second operand 6 states and 1202 transitions. [2022-11-20 11:51:24,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 292 transitions, 834 flow [2022-11-20 11:51:24,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 292 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:51:24,230 INFO L231 Difference]: Finished difference. Result has 299 places, 292 transitions, 624 flow [2022-11-20 11:51:24,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=624, PETRI_PLACES=299, PETRI_TRANSITIONS=292} [2022-11-20 11:51:24,238 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 3 predicate places. [2022-11-20 11:51:24,238 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 292 transitions, 624 flow [2022-11-20 11:51:24,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:24,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:24,239 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:24,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:24,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:51:24,446 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:24,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:24,446 INFO L85 PathProgramCache]: Analyzing trace with hash 421133850, now seen corresponding path program 1 times [2022-11-20 11:51:24,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:24,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309553782] [2022-11-20 11:51:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:24,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:24,477 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:51:24,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962872762] [2022-11-20 11:51:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:24,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:24,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:24,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:24,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:51:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:24,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:51:24,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:24,762 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:51:24,772 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:51:24,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:24,795 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-20 11:51:24,826 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:24,826 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-20 11:51:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:24,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:51:24,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:24,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309553782] [2022-11-20 11:51:24,852 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:51:24,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962872762] [2022-11-20 11:51:24,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962872762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:24,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:24,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:51:24,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119069469] [2022-11-20 11:51:24,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:24,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:51:24,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:24,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:51:24,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:51:24,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 305 [2022-11-20 11:51:24,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 292 transitions, 624 flow. Second operand has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:24,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:24,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 305 [2022-11-20 11:51:24,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:25,758 INFO L130 PetriNetUnfolder]: 745/2920 cut-off events. [2022-11-20 11:51:25,759 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 11:51:25,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 2920 events. 745/2920 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18436 event pairs, 600 based on Foata normal form. 0/2547 useless extension candidates. Maximal degree in co-relation 4144. Up to 1575 conditions per place. [2022-11-20 11:51:25,787 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 104 selfloop transitions, 5 changer transitions 0/291 dead transitions. [2022-11-20 11:51:25,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 291 transitions, 840 flow [2022-11-20 11:51:25,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:51:25,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:51:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1196 transitions. [2022-11-20 11:51:25,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.653551912568306 [2022-11-20 11:51:25,791 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1196 transitions. [2022-11-20 11:51:25,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1196 transitions. [2022-11-20 11:51:25,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:25,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1196 transitions. [2022-11-20 11:51:25,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:25,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:25,801 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:25,801 INFO L175 Difference]: Start difference. First operand has 299 places, 292 transitions, 624 flow. Second operand 6 states and 1196 transitions. [2022-11-20 11:51:25,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 291 transitions, 840 flow [2022-11-20 11:51:25,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 291 transitions, 830 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:51:25,809 INFO L231 Difference]: Finished difference. Result has 298 places, 291 transitions, 622 flow [2022-11-20 11:51:25,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=622, PETRI_PLACES=298, PETRI_TRANSITIONS=291} [2022-11-20 11:51:25,811 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 2 predicate places. [2022-11-20 11:51:25,811 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 291 transitions, 622 flow [2022-11-20 11:51:25,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:25,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:25,812 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:25,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:26,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:51:26,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:26,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:26,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1898335952, now seen corresponding path program 1 times [2022-11-20 11:51:26,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:26,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852893335] [2022-11-20 11:51:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:26,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:26,061 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:51:26,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190812789] [2022-11-20 11:51:26,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:26,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:26,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:26,063 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:26,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:51:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:26,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:51:26,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:26,372 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:51:26,392 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:51:26,426 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:26,427 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 11:51:26,462 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:26,463 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 11:51:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:26,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:51:26,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:26,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852893335] [2022-11-20 11:51:26,494 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:51:26,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190812789] [2022-11-20 11:51:26,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190812789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:26,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:26,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:51:26,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641935554] [2022-11-20 11:51:26,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:26,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:51:26,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:26,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:51:26,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:51:26,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 305 [2022-11-20 11:51:26,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 291 transitions, 622 flow. Second operand has 6 states, 6 states have (on average 186.5) internal successors, (1119), 6 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:26,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:26,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 305 [2022-11-20 11:51:26,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:27,441 INFO L130 PetriNetUnfolder]: 745/2916 cut-off events. [2022-11-20 11:51:27,441 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 11:51:27,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 2916 events. 745/2916 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18433 event pairs, 600 based on Foata normal form. 0/2547 useless extension candidates. Maximal degree in co-relation 4168. Up to 1579 conditions per place. [2022-11-20 11:51:27,463 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 105 selfloop transitions, 5 changer transitions 0/290 dead transitions. [2022-11-20 11:51:27,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 290 transitions, 840 flow [2022-11-20 11:51:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:51:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:51:27,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1185 transitions. [2022-11-20 11:51:27,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6475409836065574 [2022-11-20 11:51:27,469 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1185 transitions. [2022-11-20 11:51:27,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1185 transitions. [2022-11-20 11:51:27,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:27,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1185 transitions. [2022-11-20 11:51:27,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.5) internal successors, (1185), 6 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:27,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:27,478 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:27,478 INFO L175 Difference]: Start difference. First operand has 298 places, 291 transitions, 622 flow. Second operand 6 states and 1185 transitions. [2022-11-20 11:51:27,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 290 transitions, 840 flow [2022-11-20 11:51:27,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 290 transitions, 830 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:51:27,485 INFO L231 Difference]: Finished difference. Result has 297 places, 290 transitions, 620 flow [2022-11-20 11:51:27,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=620, PETRI_PLACES=297, PETRI_TRANSITIONS=290} [2022-11-20 11:51:27,487 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 1 predicate places. [2022-11-20 11:51:27,487 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 290 transitions, 620 flow [2022-11-20 11:51:27,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 186.5) internal successors, (1119), 6 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:27,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:27,488 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:27,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:27,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:27,696 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:27,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1726560173, now seen corresponding path program 1 times [2022-11-20 11:51:27,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:27,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955318813] [2022-11-20 11:51:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:27,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:27,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:51:27,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559713441] [2022-11-20 11:51:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:27,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:27,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:27,732 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:27,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:51:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 11:51:28,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:28,171 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:51:28,197 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 22 [2022-11-20 11:51:28,238 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:28,238 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 34 [2022-11-20 11:51:28,285 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:28,285 INFO L350 Elim1Store]: Elim1 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 41 treesize of output 46 [2022-11-20 11:51:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:28,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:51:28,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:28,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955318813] [2022-11-20 11:51:28,326 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:51:28,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559713441] [2022-11-20 11:51:28,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559713441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:28,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:28,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:51:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236831842] [2022-11-20 11:51:28,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:28,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:51:28,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:28,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:51:28,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:51:28,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 305 [2022-11-20 11:51:28,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 290 transitions, 620 flow. Second operand has 13 states, 13 states have (on average 169.0) internal successors, (2197), 13 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:28,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:28,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 305 [2022-11-20 11:51:28,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:29,807 INFO L130 PetriNetUnfolder]: 745/2912 cut-off events. [2022-11-20 11:51:29,807 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 11:51:29,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4665 conditions, 2912 events. 745/2912 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18444 event pairs, 600 based on Foata normal form. 0/2547 useless extension candidates. Maximal degree in co-relation 4205. Up to 1385 conditions per place. [2022-11-20 11:51:29,828 INFO L137 encePairwiseOnDemand]: 286/305 looper letters, 139 selfloop transitions, 26 changer transitions 0/329 dead transitions. [2022-11-20 11:51:29,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 329 transitions, 1034 flow [2022-11-20 11:51:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:51:29,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:51:29,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3610 transitions. [2022-11-20 11:51:29,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5636221701795472 [2022-11-20 11:51:29,840 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3610 transitions. [2022-11-20 11:51:29,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3610 transitions. [2022-11-20 11:51:29,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:29,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3610 transitions. [2022-11-20 11:51:29,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.9047619047619) internal successors, (3610), 21 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:29,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:29,870 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:29,870 INFO L175 Difference]: Start difference. First operand has 297 places, 290 transitions, 620 flow. Second operand 21 states and 3610 transitions. [2022-11-20 11:51:29,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 329 transitions, 1034 flow [2022-11-20 11:51:29,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 329 transitions, 1024 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:51:29,879 INFO L231 Difference]: Finished difference. Result has 314 places, 301 transitions, 709 flow [2022-11-20 11:51:29,880 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=709, PETRI_PLACES=314, PETRI_TRANSITIONS=301} [2022-11-20 11:51:29,881 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 18 predicate places. [2022-11-20 11:51:29,881 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 301 transitions, 709 flow [2022-11-20 11:51:29,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 169.0) internal successors, (2197), 13 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:29,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:29,883 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:29,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:30,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 11:51:30,091 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:30,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:30,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1831521313, now seen corresponding path program 1 times [2022-11-20 11:51:30,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:30,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251404571] [2022-11-20 11:51:30,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:30,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:30,135 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:51:30,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747923210] [2022-11-20 11:51:30,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:30,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:30,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:30,137 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:30,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:51:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:51:30,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:30,431 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:51:30,442 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:51:30,461 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:30,462 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 11:51:30,490 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:30,490 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 11:51:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:30,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:51:30,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:30,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251404571] [2022-11-20 11:51:30,516 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:51:30,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747923210] [2022-11-20 11:51:30,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747923210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:30,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:30,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:51:30,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456868110] [2022-11-20 11:51:30,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:30,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:51:30,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:30,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:51:30,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:51:30,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 305 [2022-11-20 11:51:30,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 301 transitions, 709 flow. Second operand has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 6 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:30,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:30,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 305 [2022-11-20 11:51:30,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:31,491 INFO L130 PetriNetUnfolder]: 745/2908 cut-off events. [2022-11-20 11:51:31,491 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-20 11:51:31,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4670 conditions, 2908 events. 745/2908 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18386 event pairs, 600 based on Foata normal form. 0/2547 useless extension candidates. Maximal degree in co-relation 4182. Up to 1567 conditions per place. [2022-11-20 11:51:31,515 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 103 selfloop transitions, 5 changer transitions 0/300 dead transitions. [2022-11-20 11:51:31,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 300 transitions, 923 flow [2022-11-20 11:51:31,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:51:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:51:31,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1188 transitions. [2022-11-20 11:51:31,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6491803278688525 [2022-11-20 11:51:31,521 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1188 transitions. [2022-11-20 11:51:31,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1188 transitions. [2022-11-20 11:51:31,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:31,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1188 transitions. [2022-11-20 11:51:31,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:31,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:31,535 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:31,535 INFO L175 Difference]: Start difference. First operand has 314 places, 301 transitions, 709 flow. Second operand 6 states and 1188 transitions. [2022-11-20 11:51:31,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 300 transitions, 923 flow [2022-11-20 11:51:31,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 300 transitions, 904 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 11:51:31,545 INFO L231 Difference]: Finished difference. Result has 311 places, 300 transitions, 698 flow [2022-11-20 11:51:31,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=698, PETRI_PLACES=311, PETRI_TRANSITIONS=300} [2022-11-20 11:51:31,547 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 15 predicate places. [2022-11-20 11:51:31,547 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 300 transitions, 698 flow [2022-11-20 11:51:31,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 6 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:31,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:31,549 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:31,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:31,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:51:31,757 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:31,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:31,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2114089264, now seen corresponding path program 1 times [2022-11-20 11:51:31,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:31,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676694254] [2022-11-20 11:51:31,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:31,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:31,813 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:51:31,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091071051] [2022-11-20 11:51:31,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:31,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:31,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:31,815 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:31,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:51:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:51:32,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:32,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:51:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:32,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:32,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676694254] [2022-11-20 11:51:32,614 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:51:32,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091071051] [2022-11-20 11:51:32,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091071051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:51:32,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:51:32,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:51:32,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172073169] [2022-11-20 11:51:32,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:51:32,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:51:32,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:32,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:51:32,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:51:32,621 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 305 [2022-11-20 11:51:32,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 300 transitions, 698 flow. Second operand has 8 states, 8 states have (on average 289.0) internal successors, (2312), 8 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:32,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:32,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 305 [2022-11-20 11:51:32,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:32,894 INFO L130 PetriNetUnfolder]: 7/769 cut-off events. [2022-11-20 11:51:32,894 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-20 11:51:32,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 769 events. 7/769 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 533 event pairs, 0 based on Foata normal form. 4/759 useless extension candidates. Maximal degree in co-relation 397. Up to 19 conditions per place. [2022-11-20 11:51:32,897 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 12 selfloop transitions, 9 changer transitions 0/310 dead transitions. [2022-11-20 11:51:32,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 310 transitions, 762 flow [2022-11-20 11:51:32,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:51:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:51:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2606 transitions. [2022-11-20 11:51:32,908 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9493624772313297 [2022-11-20 11:51:32,908 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2606 transitions. [2022-11-20 11:51:32,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2606 transitions. [2022-11-20 11:51:32,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:32,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2606 transitions. [2022-11-20 11:51:32,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 289.55555555555554) internal successors, (2606), 9 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:32,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:32,930 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:32,930 INFO L175 Difference]: Start difference. First operand has 311 places, 300 transitions, 698 flow. Second operand 9 states and 2606 transitions. [2022-11-20 11:51:32,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 310 transitions, 762 flow [2022-11-20 11:51:32,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 310 transitions, 752 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:51:32,941 INFO L231 Difference]: Finished difference. Result has 317 places, 306 transitions, 738 flow [2022-11-20 11:51:32,942 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=738, PETRI_PLACES=317, PETRI_TRANSITIONS=306} [2022-11-20 11:51:32,942 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 21 predicate places. [2022-11-20 11:51:32,943 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 306 transitions, 738 flow [2022-11-20 11:51:32,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 289.0) internal successors, (2312), 8 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:32,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:32,945 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:32,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:33,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:33,154 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:33,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:33,155 INFO L85 PathProgramCache]: Analyzing trace with hash 516908112, now seen corresponding path program 2 times [2022-11-20 11:51:33,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:33,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708060557] [2022-11-20 11:51:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:33,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:33,278 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:51:33,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895141430] [2022-11-20 11:51:33,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:51:33,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:33,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:33,280 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:33,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:51:33,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:51:33,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:51:33,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:51:33,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:33,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 11:51:33,772 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-20 11:51:33,798 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:33,798 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 11:51:33,833 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:33,833 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-20 11:51:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-20 11:51:33,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:51:33,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:33,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708060557] [2022-11-20 11:51:33,866 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:51:33,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895141430] [2022-11-20 11:51:33,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895141430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:33,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:33,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:51:33,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619157282] [2022-11-20 11:51:33,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:33,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:51:33,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:33,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:51:33,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:51:33,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 305 [2022-11-20 11:51:33,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 306 transitions, 738 flow. Second operand has 6 states, 6 states have (on average 176.16666666666666) internal successors, (1057), 6 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:33,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:33,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 305 [2022-11-20 11:51:33,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:36,444 INFO L130 PetriNetUnfolder]: 1693/4827 cut-off events. [2022-11-20 11:51:36,445 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-11-20 11:51:36,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8611 conditions, 4827 events. 1693/4827 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 31752 event pairs, 775 based on Foata normal form. 0/4218 useless extension candidates. Maximal degree in co-relation 7897. Up to 2615 conditions per place. [2022-11-20 11:51:36,497 INFO L137 encePairwiseOnDemand]: 293/305 looper letters, 237 selfloop transitions, 23 changer transitions 0/442 dead transitions. [2022-11-20 11:51:36,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 442 transitions, 1538 flow [2022-11-20 11:51:36,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:51:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:51:36,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1249 transitions. [2022-11-20 11:51:36,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6825136612021858 [2022-11-20 11:51:36,502 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1249 transitions. [2022-11-20 11:51:36,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1249 transitions. [2022-11-20 11:51:36,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:36,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1249 transitions. [2022-11-20 11:51:36,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.16666666666666) internal successors, (1249), 6 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:36,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:36,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:36,512 INFO L175 Difference]: Start difference. First operand has 317 places, 306 transitions, 738 flow. Second operand 6 states and 1249 transitions. [2022-11-20 11:51:36,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 442 transitions, 1538 flow [2022-11-20 11:51:36,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 442 transitions, 1532 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-20 11:51:36,523 INFO L231 Difference]: Finished difference. Result has 326 places, 328 transitions, 890 flow [2022-11-20 11:51:36,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=890, PETRI_PLACES=326, PETRI_TRANSITIONS=328} [2022-11-20 11:51:36,525 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 30 predicate places. [2022-11-20 11:51:36,525 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 328 transitions, 890 flow [2022-11-20 11:51:36,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.16666666666666) internal successors, (1057), 6 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:36,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:36,527 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:36,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:36,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:36,734 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:36,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:36,734 INFO L85 PathProgramCache]: Analyzing trace with hash 105158886, now seen corresponding path program 1 times [2022-11-20 11:51:36,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:36,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013862040] [2022-11-20 11:51:36,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:36,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:36,834 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:51:36,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511451883] [2022-11-20 11:51:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:36,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:36,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:36,837 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:36,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:51:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:37,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:51:37,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:38,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:51:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:38,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:38,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013862040] [2022-11-20 11:51:38,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:51:38,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511451883] [2022-11-20 11:51:38,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511451883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:51:38,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:51:38,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 11:51:38,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875702789] [2022-11-20 11:51:38,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:51:38,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:51:38,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:38,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:51:38,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:51:38,714 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 305 [2022-11-20 11:51:38,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 328 transitions, 890 flow. Second operand has 16 states, 16 states have (on average 289.3125) internal successors, (4629), 16 states have internal predecessors, (4629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:38,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:38,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 305 [2022-11-20 11:51:38,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:39,728 INFO L130 PetriNetUnfolder]: 75/2061 cut-off events. [2022-11-20 11:51:39,728 INFO L131 PetriNetUnfolder]: For 113/116 co-relation queries the response was YES. [2022-11-20 11:51:39,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 2061 events. 75/2061 cut-off events. For 113/116 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4350 event pairs, 8 based on Foata normal form. 8/1993 useless extension candidates. Maximal degree in co-relation 2171. Up to 65 conditions per place. [2022-11-20 11:51:39,740 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 20 selfloop transitions, 21 changer transitions 0/352 dead transitions. [2022-11-20 11:51:39,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 352 transitions, 1072 flow [2022-11-20 11:51:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:51:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:51:39,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6072 transitions. [2022-11-20 11:51:39,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9480093676814988 [2022-11-20 11:51:39,755 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6072 transitions. [2022-11-20 11:51:39,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6072 transitions. [2022-11-20 11:51:39,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:39,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6072 transitions. [2022-11-20 11:51:39,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 289.14285714285717) internal successors, (6072), 21 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:39,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:39,788 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 305.0) internal successors, (6710), 22 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:39,788 INFO L175 Difference]: Start difference. First operand has 326 places, 328 transitions, 890 flow. Second operand 21 states and 6072 transitions. [2022-11-20 11:51:39,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 352 transitions, 1072 flow [2022-11-20 11:51:39,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 352 transitions, 1072 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:51:39,799 INFO L231 Difference]: Finished difference. Result has 351 places, 341 transitions, 1020 flow [2022-11-20 11:51:39,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1020, PETRI_PLACES=351, PETRI_TRANSITIONS=341} [2022-11-20 11:51:39,800 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 55 predicate places. [2022-11-20 11:51:39,801 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 341 transitions, 1020 flow [2022-11-20 11:51:39,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 289.3125) internal successors, (4629), 16 states have internal predecessors, (4629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:39,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:39,820 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:39,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:40,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:40,033 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:40,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:40,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1817311450, now seen corresponding path program 2 times [2022-11-20 11:51:40,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:40,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455261039] [2022-11-20 11:51:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:40,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:40,209 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:51:40,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783377893] [2022-11-20 11:51:40,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:51:40,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:40,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:40,212 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:40,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:51:40,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:51:40,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:51:40,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:51:40,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:40,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 11:51:40,881 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-20 11:51:40,902 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:40,903 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 11:51:40,934 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:40,935 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-20 11:51:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-20 11:51:40,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:51:40,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:40,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455261039] [2022-11-20 11:51:40,966 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:51:40,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783377893] [2022-11-20 11:51:40,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783377893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:40,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:40,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:51:40,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067018662] [2022-11-20 11:51:40,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:40,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:51:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:40,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:51:40,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:51:40,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 305 [2022-11-20 11:51:40,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 341 transitions, 1020 flow. Second operand has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:40,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:40,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 305 [2022-11-20 11:51:40,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:44,923 INFO L130 PetriNetUnfolder]: 2504/7503 cut-off events. [2022-11-20 11:51:44,923 INFO L131 PetriNetUnfolder]: For 1408/1416 co-relation queries the response was YES. [2022-11-20 11:51:44,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14582 conditions, 7503 events. 2504/7503 cut-off events. For 1408/1416 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 48979 event pairs, 904 based on Foata normal form. 0/6654 useless extension candidates. Maximal degree in co-relation 13184. Up to 3999 conditions per place. [2022-11-20 11:51:45,004 INFO L137 encePairwiseOnDemand]: 293/305 looper letters, 270 selfloop transitions, 31 changer transitions 0/497 dead transitions. [2022-11-20 11:51:45,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 497 transitions, 2096 flow [2022-11-20 11:51:45,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:51:45,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:51:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1245 transitions. [2022-11-20 11:51:45,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.680327868852459 [2022-11-20 11:51:45,008 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1245 transitions. [2022-11-20 11:51:45,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1245 transitions. [2022-11-20 11:51:45,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:45,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1245 transitions. [2022-11-20 11:51:45,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.5) internal successors, (1245), 6 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:45,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:45,017 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:45,017 INFO L175 Difference]: Start difference. First operand has 351 places, 341 transitions, 1020 flow. Second operand 6 states and 1245 transitions. [2022-11-20 11:51:45,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 497 transitions, 2096 flow [2022-11-20 11:51:45,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 497 transitions, 2072 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-20 11:51:45,034 INFO L231 Difference]: Finished difference. Result has 355 places, 371 transitions, 1254 flow [2022-11-20 11:51:45,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1254, PETRI_PLACES=355, PETRI_TRANSITIONS=371} [2022-11-20 11:51:45,035 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 59 predicate places. [2022-11-20 11:51:45,036 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 371 transitions, 1254 flow [2022-11-20 11:51:45,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:45,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:45,037 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:45,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:45,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:45,245 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:45,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:45,246 INFO L85 PathProgramCache]: Analyzing trace with hash -365266726, now seen corresponding path program 1 times [2022-11-20 11:51:45,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:45,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854401021] [2022-11-20 11:51:45,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:45,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:45,391 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:51:45,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1939017354] [2022-11-20 11:51:45,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:45,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:45,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:45,394 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:45,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:51:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:46,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 2849 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:51:46,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:47,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:51:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:49,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:49,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854401021] [2022-11-20 11:51:49,307 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:51:49,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939017354] [2022-11-20 11:51:49,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939017354] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:51:49,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:51:49,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-20 11:51:49,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505811093] [2022-11-20 11:51:49,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:51:49,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:51:49,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:49,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:51:49,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:51:49,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 305 [2022-11-20 11:51:49,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 371 transitions, 1254 flow. Second operand has 32 states, 32 states have (on average 289.375) internal successors, (9260), 32 states have internal predecessors, (9260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:49,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:49,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 305 [2022-11-20 11:51:49,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:51:52,677 INFO L130 PetriNetUnfolder]: 153/4155 cut-off events. [2022-11-20 11:51:52,678 INFO L131 PetriNetUnfolder]: For 921/934 co-relation queries the response was YES. [2022-11-20 11:51:52,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5860 conditions, 4155 events. 153/4155 cut-off events. For 921/934 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 10386 event pairs, 10 based on Foata normal form. 16/4029 useless extension candidates. Maximal degree in co-relation 4373. Up to 107 conditions per place. [2022-11-20 11:51:52,700 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 36 selfloop transitions, 45 changer transitions 0/422 dead transitions. [2022-11-20 11:51:52,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 422 transitions, 1716 flow [2022-11-20 11:51:52,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 11:51:52,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 11:51:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 13004 transitions. [2022-11-20 11:51:52,720 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9474681238615665 [2022-11-20 11:51:52,720 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 13004 transitions. [2022-11-20 11:51:52,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 13004 transitions. [2022-11-20 11:51:52,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:51:52,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 13004 transitions. [2022-11-20 11:51:52,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 288.97777777777776) internal successors, (13004), 45 states have internal predecessors, (13004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:52,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 305.0) internal successors, (14030), 46 states have internal predecessors, (14030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:52,772 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 305.0) internal successors, (14030), 46 states have internal predecessors, (14030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:52,773 INFO L175 Difference]: Start difference. First operand has 355 places, 371 transitions, 1254 flow. Second operand 45 states and 13004 transitions. [2022-11-20 11:51:52,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 422 transitions, 1716 flow [2022-11-20 11:51:52,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 422 transitions, 1716 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:51:52,792 INFO L231 Difference]: Finished difference. Result has 408 places, 396 transitions, 1556 flow [2022-11-20 11:51:52,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1556, PETRI_PLACES=408, PETRI_TRANSITIONS=396} [2022-11-20 11:51:52,794 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 112 predicate places. [2022-11-20 11:51:52,794 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 396 transitions, 1556 flow [2022-11-20 11:51:52,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 289.375) internal successors, (9260), 32 states have internal predecessors, (9260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:52,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:51:52,799 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:52,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:53,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:51:53,012 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:51:53,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash -634915494, now seen corresponding path program 2 times [2022-11-20 11:51:53,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:53,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692651656] [2022-11-20 11:51:53,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:53,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:53,357 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:51:53,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632812073] [2022-11-20 11:51:53,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:51:53,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:53,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:53,364 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:53,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:51:54,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:51:54,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:51:54,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:51:54,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:54,574 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:51:54,584 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:51:54,604 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:54,604 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 11:51:54,638 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:51:54,639 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 11:51:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-11-20 11:51:54,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:51:54,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:54,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692651656] [2022-11-20 11:51:54,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:51:54,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632812073] [2022-11-20 11:51:54,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632812073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:54,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:54,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:51:54,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076841948] [2022-11-20 11:51:54,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:54,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:51:54,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:54,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:51:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:51:54,683 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 305 [2022-11-20 11:51:54,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 396 transitions, 1556 flow. Second operand has 6 states, 6 states have (on average 189.83333333333334) internal successors, (1139), 6 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:54,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:51:54,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 305 [2022-11-20 11:51:54,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:52:02,515 INFO L130 PetriNetUnfolder]: 2016/8393 cut-off events. [2022-11-20 11:52:02,515 INFO L131 PetriNetUnfolder]: For 3421/3429 co-relation queries the response was YES. [2022-11-20 11:52:02,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17041 conditions, 8393 events. 2016/8393 cut-off events. For 3421/3429 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 45433 event pairs, 810 based on Foata normal form. 0/7822 useless extension candidates. Maximal degree in co-relation 14278. Up to 4169 conditions per place. [2022-11-20 11:52:02,565 INFO L137 encePairwiseOnDemand]: 294/305 looper letters, 253 selfloop transitions, 55 changer transitions 0/546 dead transitions. [2022-11-20 11:52:02,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 546 transitions, 2796 flow [2022-11-20 11:52:02,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:52:02,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:52:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1289 transitions. [2022-11-20 11:52:02,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7043715846994536 [2022-11-20 11:52:02,568 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1289 transitions. [2022-11-20 11:52:02,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1289 transitions. [2022-11-20 11:52:02,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:52:02,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1289 transitions. [2022-11-20 11:52:02,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:02,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:02,575 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:02,576 INFO L175 Difference]: Start difference. First operand has 408 places, 396 transitions, 1556 flow. Second operand 6 states and 1289 transitions. [2022-11-20 11:52:02,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 546 transitions, 2796 flow [2022-11-20 11:52:02,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 546 transitions, 2740 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-20 11:52:02,642 INFO L231 Difference]: Finished difference. Result has 400 places, 445 transitions, 2054 flow [2022-11-20 11:52:02,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2054, PETRI_PLACES=400, PETRI_TRANSITIONS=445} [2022-11-20 11:52:02,643 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 104 predicate places. [2022-11-20 11:52:02,643 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 445 transitions, 2054 flow [2022-11-20 11:52:02,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.83333333333334) internal successors, (1139), 6 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:02,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:52:02,645 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:52:02,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-20 11:52:02,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:52:02,853 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:52:02,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:02,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1276591888, now seen corresponding path program 1 times [2022-11-20 11:52:02,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:02,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363542394] [2022-11-20 11:52:02,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:02,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:03,096 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:52:03,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88509547] [2022-11-20 11:52:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:03,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:52:03,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:52:03,102 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:52:03,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:52:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:05,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 5829 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 11:52:05,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:52:07,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:52:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:52:10,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:10,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363542394] [2022-11-20 11:52:10,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:52:10,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88509547] [2022-11-20 11:52:10,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88509547] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:52:10,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:52:10,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-20 11:52:10,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499260133] [2022-11-20 11:52:10,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:52:10,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-20 11:52:10,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:10,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-20 11:52:10,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 11:52:10,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 305 [2022-11-20 11:52:10,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 445 transitions, 2054 flow. Second operand has 61 states, 61 states have (on average 289.4918032786885) internal successors, (17659), 61 states have internal predecessors, (17659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:10,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:52:10,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 305 [2022-11-20 11:52:10,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:52:19,780 INFO L130 PetriNetUnfolder]: 260/7321 cut-off events. [2022-11-20 11:52:19,780 INFO L131 PetriNetUnfolder]: For 5767/5831 co-relation queries the response was YES. [2022-11-20 11:52:19,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11131 conditions, 7321 events. 260/7321 cut-off events. For 5767/5831 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 14086 event pairs, 10 based on Foata normal form. 44/7193 useless extension candidates. Maximal degree in co-relation 9350. Up to 197 conditions per place. [2022-11-20 11:52:19,805 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 66 selfloop transitions, 90 changer transitions 0/546 dead transitions. [2022-11-20 11:52:19,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 546 transitions, 3140 flow [2022-11-20 11:52:19,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-20 11:52:19,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-20 11:52:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 26001 transitions. [2022-11-20 11:52:19,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9472131147540983 [2022-11-20 11:52:19,831 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 26001 transitions. [2022-11-20 11:52:19,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 26001 transitions. [2022-11-20 11:52:19,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:52:19,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 26001 transitions. [2022-11-20 11:52:19,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 288.9) internal successors, (26001), 90 states have internal predecessors, (26001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:19,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 305.0) internal successors, (27755), 91 states have internal predecessors, (27755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:19,903 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 305.0) internal successors, (27755), 91 states have internal predecessors, (27755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:19,904 INFO L175 Difference]: Start difference. First operand has 400 places, 445 transitions, 2054 flow. Second operand 90 states and 26001 transitions. [2022-11-20 11:52:19,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 546 transitions, 3140 flow [2022-11-20 11:52:19,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 546 transitions, 3140 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:52:19,934 INFO L231 Difference]: Finished difference. Result has 505 places, 491 transitions, 2708 flow [2022-11-20 11:52:19,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=2708, PETRI_PLACES=505, PETRI_TRANSITIONS=491} [2022-11-20 11:52:19,935 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 209 predicate places. [2022-11-20 11:52:19,936 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 491 transitions, 2708 flow [2022-11-20 11:52:19,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 289.4918032786885) internal successors, (17659), 61 states have internal predecessors, (17659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:19,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:52:19,939 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:52:19,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:20,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:52:20,157 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:52:20,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1275448139, now seen corresponding path program 2 times [2022-11-20 11:52:20,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:20,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338246633] [2022-11-20 11:52:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:20,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:20,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:52:20,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506114847] [2022-11-20 11:52:20,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:52:20,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:52:20,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:52:20,576 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:52:20,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:52:22,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:52:22,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:52:22,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:52:22,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:22,454 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:52:22,469 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:52:22,488 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:52:22,488 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 11:52:22,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:52:22,515 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 11:52:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39616 trivial. 0 not checked. [2022-11-20 11:52:22,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:52:22,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:22,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338246633] [2022-11-20 11:52:22,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:52:22,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506114847] [2022-11-20 11:52:22,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506114847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:22,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:22,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:52:22,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748283761] [2022-11-20 11:52:22,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:22,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:52:22,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:22,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:52:22,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:52:22,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 305 [2022-11-20 11:52:22,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 491 transitions, 2708 flow. Second operand has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:22,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:52:22,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 305 [2022-11-20 11:52:22,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:52:38,836 INFO L130 PetriNetUnfolder]: 2129/11344 cut-off events. [2022-11-20 11:52:38,836 INFO L131 PetriNetUnfolder]: For 8105/8129 co-relation queries the response was YES. [2022-11-20 11:52:38,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24650 conditions, 11344 events. 2129/11344 cut-off events. For 8105/8129 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 46851 event pairs, 758 based on Foata normal form. 3/10864 useless extension candidates. Maximal degree in co-relation 19243. Up to 5538 conditions per place. [2022-11-20 11:52:38,918 INFO L137 encePairwiseOnDemand]: 294/305 looper letters, 306 selfloop transitions, 79 changer transitions 0/669 dead transitions. [2022-11-20 11:52:38,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 669 transitions, 4466 flow [2022-11-20 11:52:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:52:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:52:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1285 transitions. [2022-11-20 11:52:38,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7021857923497268 [2022-11-20 11:52:38,921 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1285 transitions. [2022-11-20 11:52:38,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1285 transitions. [2022-11-20 11:52:38,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:52:38,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1285 transitions. [2022-11-20 11:52:38,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.16666666666666) internal successors, (1285), 6 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:38,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:38,937 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:38,938 INFO L175 Difference]: Start difference. First operand has 505 places, 491 transitions, 2708 flow. Second operand 6 states and 1285 transitions. [2022-11-20 11:52:38,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 669 transitions, 4466 flow [2022-11-20 11:52:38,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 669 transitions, 4348 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-20 11:52:39,006 INFO L231 Difference]: Finished difference. Result has 473 places, 556 transitions, 3488 flow [2022-11-20 11:52:39,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2590, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3488, PETRI_PLACES=473, PETRI_TRANSITIONS=556} [2022-11-20 11:52:39,008 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 177 predicate places. [2022-11-20 11:52:39,008 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 556 transitions, 3488 flow [2022-11-20 11:52:39,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:39,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:52:39,009 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:52:39,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:39,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:52:39,220 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:52:39,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:39,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1586935174, now seen corresponding path program 1 times [2022-11-20 11:52:39,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:39,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801553678] [2022-11-20 11:52:39,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:39,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:39,621 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:52:39,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426241958] [2022-11-20 11:52:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:39,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:52:39,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:52:39,628 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:52:39,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:52:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:43,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 11375 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:52:43,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-20 11:52:49,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:52:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-20 11:52:55,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:55,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801553678] [2022-11-20 11:52:55,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:52:55,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426241958] [2022-11-20 11:52:55,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426241958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:52:55,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:52:55,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:52:55,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541514522] [2022-11-20 11:52:55,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:52:55,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:52:55,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:55,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:52:55,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:52:55,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 305 [2022-11-20 11:52:55,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 556 transitions, 3488 flow. Second operand has 8 states, 8 states have (on average 286.75) internal successors, (2294), 8 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) [2022-11-20 11:52:55,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:52:55,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 305 [2022-11-20 11:52:55,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:53:12,788 INFO L130 PetriNetUnfolder]: 375/10477 cut-off events. [2022-11-20 11:53:12,788 INFO L131 PetriNetUnfolder]: For 7741/7912 co-relation queries the response was YES. [2022-11-20 11:53:12,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16714 conditions, 10477 events. 375/10477 cut-off events. For 7741/7912 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 16881 event pairs, 11 based on Foata normal form. 62/10376 useless extension candidates. Maximal degree in co-relation 13531. Up to 271 conditions per place. [2022-11-20 11:53:12,837 INFO L137 encePairwiseOnDemand]: 299/305 looper letters, 22 selfloop transitions, 9 changer transitions 0/571 dead transitions. [2022-11-20 11:53:12,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 571 transitions, 3589 flow [2022-11-20 11:53:12,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:53:12,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:53:12,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2588 transitions. [2022-11-20 11:53:12,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9428051001821494 [2022-11-20 11:53:12,841 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2588 transitions. [2022-11-20 11:53:12,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2588 transitions. [2022-11-20 11:53:12,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:53:12,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2588 transitions. [2022-11-20 11:53:12,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 287.55555555555554) internal successors, (2588), 9 states have internal predecessors, (2588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,849 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,849 INFO L175 Difference]: Start difference. First operand has 473 places, 556 transitions, 3488 flow. Second operand 9 states and 2588 transitions. [2022-11-20 11:53:12,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 571 transitions, 3589 flow [2022-11-20 11:53:12,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 571 transitions, 3589 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:53:12,909 INFO L231 Difference]: Finished difference. Result has 484 places, 562 transitions, 3538 flow [2022-11-20 11:53:12,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=3488, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3538, PETRI_PLACES=484, PETRI_TRANSITIONS=562} [2022-11-20 11:53:12,910 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 188 predicate places. [2022-11-20 11:53:12,910 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 562 transitions, 3538 flow [2022-11-20 11:53:12,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 286.75) internal successors, (2294), 8 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) [2022-11-20 11:53:12,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:53:12,913 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:12,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:53:13,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:53:13,127 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-20 11:53:13,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:13,129 INFO L85 PathProgramCache]: Analyzing trace with hash -205919684, now seen corresponding path program 2 times [2022-11-20 11:53:13,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:13,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912035227] [2022-11-20 11:53:13,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:13,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:14,479 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:53:14,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005393303] [2022-11-20 11:53:14,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:53:14,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:53:14,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:53:14,488 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:53:14,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaed694b-efa4-4111-9e09-ea043bdd9021/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 11:53:19,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:53:19,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:53:19,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:53:19,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:19,577 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:53:19,589 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:53:19,606 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:53:19,607 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 11:53:19,630 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:53:19,631 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 11:53:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 364812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364812 trivial. 0 not checked. [2022-11-20 11:53:19,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:53:19,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:19,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912035227] [2022-11-20 11:53:19,671 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:53:19,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005393303] [2022-11-20 11:53:19,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005393303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:19,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:19,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:53:19,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818059455] [2022-11-20 11:53:19,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:19,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:53:19,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:53:19,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:53:19,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 305 [2022-11-20 11:53:19,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 562 transitions, 3538 flow. Second operand has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:19,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:53:19,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 305 [2022-11-20 11:53:19,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand