./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-in-array-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-in-array-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 c3ac8edf9cc34df23835297b42f3eb24b0fecd781f1d2abb112aaac7f99695b4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:49:42,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:42,894 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:49:42,899 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:42,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:42,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:42,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:42,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:42,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:49:42,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:49:42,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:42,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:42,931 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:42,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:42,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:49:42,933 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:49:42,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:42,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:49:42,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:42,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:49:42,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:49:42,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:49:42,937 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:49:42,938 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:49:42,938 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:49:42,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:49:42,939 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:42,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:42,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:42,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:49:42,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:42,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:42,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:49:42,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:49:42,942 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:49:42,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:49:42,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:49:42,943 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:49:42,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:49:42,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:49:42,944 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:49:42,945 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3ac8edf9cc34df23835297b42f3eb24b0fecd781f1d2abb112aaac7f99695b4 [2023-11-19 07:49:43,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:43,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:43,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:43,201 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:43,202 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:43,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-in-array-race.i [2023-11-19 07:49:46,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:46,712 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:46,713 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/sv-benchmarks/c/pthread-race-challenges/per-thread-struct-in-array-race.i [2023-11-19 07:49:46,756 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/data/41108cce6/5908268f182f46b0b71c2ccf68b6364a/FLAG5459df907 [2023-11-19 07:49:46,780 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/data/41108cce6/5908268f182f46b0b71c2ccf68b6364a [2023-11-19 07:49:46,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:46,788 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:46,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:46,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:46,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:46,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:46" (1/1) ... [2023-11-19 07:49:46,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d30e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:46, skipping insertion in model container [2023-11-19 07:49:46,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:46" (1/1) ... [2023-11-19 07:49:46,882 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:47,106 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:49:47,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:47,508 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:49:47,534 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:49:47,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:47,666 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:49:47,674 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:49:47,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:47 WrapperNode [2023-11-19 07:49:47,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:47,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:47,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:49:47,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:49:47,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:47" (1/1) ... [2023-11-19 07:49:47,730 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:47" (1/1) ... [2023-11-19 07:49:47,783 INFO L138 Inliner]: procedures = 266, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2023-11-19 07:49:47,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:47,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:49:47,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:49:47,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:49:47,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:47" (1/1) ... [2023-11-19 07:49:47,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:47" (1/1) ... [2023-11-19 07:49:47,813 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:47" (1/1) ... [2023-11-19 07:49:47,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:47" (1/1) ... [2023-11-19 07:49:47,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:47" (1/1) ... [2023-11-19 07:49:47,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:47" (1/1) ... [2023-11-19 07:49:47,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:47" (1/1) ... [2023-11-19 07:49:47,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:47" (1/1) ... [2023-11-19 07:49:47,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:49:47,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:49:47,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:49:47,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:49:47,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:47" (1/1) ... [2023-11-19 07:49:47,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:47,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:47,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:49:47,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:49:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:49:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:49:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:49:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:49:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:49:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:49:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:49:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 07:49:47,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 07:49:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:49:47,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:49:47,929 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:49:48,069 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:49:48,072 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:49:48,408 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:49:48,419 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:49:48,419 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:49:48,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:48 BoogieIcfgContainer [2023-11-19 07:49:48,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:49:48,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:49:48,427 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:49:48,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:49:48,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:46" (1/3) ... [2023-11-19 07:49:48,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7fb25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:48, skipping insertion in model container [2023-11-19 07:49:48,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:47" (2/3) ... [2023-11-19 07:49:48,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7fb25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:48, skipping insertion in model container [2023-11-19 07:49:48,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:48" (3/3) ... [2023-11-19 07:49:48,434 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-struct-in-array-race.i [2023-11-19 07:49:48,444 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:49:48,456 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:49:48,456 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-19 07:49:48,457 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:49:48,561 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:49:48,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 122 transitions, 251 flow [2023-11-19 07:49:48,738 INFO L124 PetriNetUnfolderBase]: 6/188 cut-off events. [2023-11-19 07:49:48,739 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:49:48,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 188 events. 6/188 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 382 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-11-19 07:49:48,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 122 transitions, 251 flow [2023-11-19 07:49:48,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 122 transitions, 251 flow [2023-11-19 07:49:48,755 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:49:48,766 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 122 transitions, 251 flow [2023-11-19 07:49:48,773 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 122 transitions, 251 flow [2023-11-19 07:49:48,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 122 transitions, 251 flow [2023-11-19 07:49:48,825 INFO L124 PetriNetUnfolderBase]: 6/188 cut-off events. [2023-11-19 07:49:48,825 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:49:48,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 188 events. 6/188 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 382 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-11-19 07:49:48,829 INFO L119 LiptonReduction]: Number of co-enabled transitions 2368 [2023-11-19 07:49:52,009 INFO L134 LiptonReduction]: Checked pairs total: 9513 [2023-11-19 07:49:52,009 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-11-19 07:49:52,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:52,050 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=LoopHeads, 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;@77b06981, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:52,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-19 07:49:52,062 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:49:52,063 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-19 07:49:52,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:49:52,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:52,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:52,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:49:52,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:52,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1944862519, now seen corresponding path program 1 times [2023-11-19 07:49:52,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:52,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152995507] [2023-11-19 07:49:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:52,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:52,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:52,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152995507] [2023-11-19 07:49:52,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152995507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:52,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:52,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:52,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723077716] [2023-11-19 07:49:52,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:52,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:49:52,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:52,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:49:52,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:53,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 191 [2023-11-19 07:49:53,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 98.16666666666667) internal successors, (589), 6 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:53,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:53,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 191 [2023-11-19 07:49:53,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:53,620 INFO L124 PetriNetUnfolderBase]: 142/502 cut-off events. [2023-11-19 07:49:53,620 INFO L125 PetriNetUnfolderBase]: For 4/8 co-relation queries the response was YES. [2023-11-19 07:49:53,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 502 events. 142/502 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2683 event pairs, 46 based on Foata normal form. 0/457 useless extension candidates. Maximal degree in co-relation 770. Up to 224 conditions per place. [2023-11-19 07:49:53,632 INFO L140 encePairwiseOnDemand]: 175/191 looper letters, 47 selfloop transitions, 23 changer transitions 0/98 dead transitions. [2023-11-19 07:49:53,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 343 flow [2023-11-19 07:49:53,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:49:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 654 transitions. [2023-11-19 07:49:53,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706806282722513 [2023-11-19 07:49:53,660 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 654 transitions. [2023-11-19 07:49:53,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 654 transitions. [2023-11-19 07:49:53,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:53,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 654 transitions. [2023-11-19 07:49:53,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:53,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:53,683 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:53,685 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 121 flow. Second operand 6 states and 654 transitions. [2023-11-19 07:49:53,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 343 flow [2023-11-19 07:49:53,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 98 transitions, 343 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:53,694 INFO L231 Difference]: Finished difference. Result has 69 places, 80 transitions, 291 flow [2023-11-19 07:49:53,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=69, PETRI_TRANSITIONS=80} [2023-11-19 07:49:53,700 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 10 predicate places. [2023-11-19 07:49:53,700 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 80 transitions, 291 flow [2023-11-19 07:49:53,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.16666666666667) internal successors, (589), 6 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:53,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:53,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:53,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:49:53,702 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:49:53,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1019690596, now seen corresponding path program 1 times [2023-11-19 07:49:53,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:53,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285727749] [2023-11-19 07:49:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:53,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:54,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:54,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285727749] [2023-11-19 07:49:54,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285727749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:54,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:54,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:54,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372371674] [2023-11-19 07:49:54,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:54,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:49:54,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:54,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:49:54,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:54,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 191 [2023-11-19 07:49:54,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 80 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:54,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:54,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 191 [2023-11-19 07:49:54,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:54,642 INFO L124 PetriNetUnfolderBase]: 284/849 cut-off events. [2023-11-19 07:49:54,642 INFO L125 PetriNetUnfolderBase]: For 323/329 co-relation queries the response was YES. [2023-11-19 07:49:54,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 849 events. 284/849 cut-off events. For 323/329 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5134 event pairs, 46 based on Foata normal form. 5/812 useless extension candidates. Maximal degree in co-relation 1869. Up to 391 conditions per place. [2023-11-19 07:49:54,651 INFO L140 encePairwiseOnDemand]: 168/191 looper letters, 73 selfloop transitions, 50 changer transitions 0/152 dead transitions. [2023-11-19 07:49:54,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 152 transitions, 798 flow [2023-11-19 07:49:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:49:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 637 transitions. [2023-11-19 07:49:54,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555846422338569 [2023-11-19 07:49:54,657 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 637 transitions. [2023-11-19 07:49:54,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 637 transitions. [2023-11-19 07:49:54,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:54,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 637 transitions. [2023-11-19 07:49:54,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.16666666666667) internal successors, (637), 6 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:54,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:54,665 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:54,666 INFO L175 Difference]: Start difference. First operand has 69 places, 80 transitions, 291 flow. Second operand 6 states and 637 transitions. [2023-11-19 07:49:54,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 152 transitions, 798 flow [2023-11-19 07:49:54,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 152 transitions, 798 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:54,676 INFO L231 Difference]: Finished difference. Result has 79 places, 129 transitions, 769 flow [2023-11-19 07:49:54,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=769, PETRI_PLACES=79, PETRI_TRANSITIONS=129} [2023-11-19 07:49:54,677 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 20 predicate places. [2023-11-19 07:49:54,677 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 129 transitions, 769 flow [2023-11-19 07:49:54,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:54,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:54,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:54,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:49:54,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:49:54,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:54,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2137668406, now seen corresponding path program 1 times [2023-11-19 07:49:54,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:54,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41163610] [2023-11-19 07:49:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:54,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:55,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:55,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:55,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41163610] [2023-11-19 07:49:55,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41163610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:55,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:55,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:55,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219448214] [2023-11-19 07:49:55,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:55,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:49:55,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:55,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:49:55,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:55,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 191 [2023-11-19 07:49:55,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 129 transitions, 769 flow. Second operand has 6 states, 6 states have (on average 101.33333333333333) internal successors, (608), 6 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:55,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:55,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 191 [2023-11-19 07:49:55,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:55,677 INFO L124 PetriNetUnfolderBase]: 280/832 cut-off events. [2023-11-19 07:49:55,677 INFO L125 PetriNetUnfolderBase]: For 1099/1118 co-relation queries the response was YES. [2023-11-19 07:49:55,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2533 conditions, 832 events. 280/832 cut-off events. For 1099/1118 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5017 event pairs, 47 based on Foata normal form. 1/802 useless extension candidates. Maximal degree in co-relation 2371. Up to 429 conditions per place. [2023-11-19 07:49:55,686 INFO L140 encePairwiseOnDemand]: 180/191 looper letters, 76 selfloop transitions, 33 changer transitions 8/171 dead transitions. [2023-11-19 07:49:55,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 171 transitions, 1242 flow [2023-11-19 07:49:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:49:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 656 transitions. [2023-11-19 07:49:55,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5724258289703316 [2023-11-19 07:49:55,690 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 656 transitions. [2023-11-19 07:49:55,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 656 transitions. [2023-11-19 07:49:55,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:55,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 656 transitions. [2023-11-19 07:49:55,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.33333333333333) internal successors, (656), 6 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:55,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:55,698 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:55,698 INFO L175 Difference]: Start difference. First operand has 79 places, 129 transitions, 769 flow. Second operand 6 states and 656 transitions. [2023-11-19 07:49:55,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 171 transitions, 1242 flow [2023-11-19 07:49:55,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 171 transitions, 1242 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:55,710 INFO L231 Difference]: Finished difference. Result has 89 places, 159 transitions, 1134 flow [2023-11-19 07:49:55,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1134, PETRI_PLACES=89, PETRI_TRANSITIONS=159} [2023-11-19 07:49:55,711 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 30 predicate places. [2023-11-19 07:49:55,711 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 159 transitions, 1134 flow [2023-11-19 07:49:55,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.33333333333333) internal successors, (608), 6 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:55,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:55,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:55,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:49:55,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:49:55,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:55,714 INFO L85 PathProgramCache]: Analyzing trace with hash -708610628, now seen corresponding path program 1 times [2023-11-19 07:49:55,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:55,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399230445] [2023-11-19 07:49:55,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:55,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:56,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:56,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:56,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399230445] [2023-11-19 07:49:56,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399230445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:56,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:56,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:56,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947103852] [2023-11-19 07:49:56,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:56,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:49:56,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:56,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:49:56,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:56,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 191 [2023-11-19 07:49:56,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 159 transitions, 1134 flow. Second operand has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:56,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 191 [2023-11-19 07:49:56,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:56,800 INFO L124 PetriNetUnfolderBase]: 536/1340 cut-off events. [2023-11-19 07:49:56,800 INFO L125 PetriNetUnfolderBase]: For 1846/1860 co-relation queries the response was YES. [2023-11-19 07:49:56,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4857 conditions, 1340 events. 536/1340 cut-off events. For 1846/1860 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 8488 event pairs, 92 based on Foata normal form. 0/1253 useless extension candidates. Maximal degree in co-relation 4691. Up to 994 conditions per place. [2023-11-19 07:49:56,816 INFO L140 encePairwiseOnDemand]: 161/191 looper letters, 167 selfloop transitions, 111 changer transitions 10/304 dead transitions. [2023-11-19 07:49:56,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 304 transitions, 2364 flow [2023-11-19 07:49:56,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:49:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 683 transitions. [2023-11-19 07:49:56,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5959860383944153 [2023-11-19 07:49:56,820 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 683 transitions. [2023-11-19 07:49:56,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 683 transitions. [2023-11-19 07:49:56,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:56,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 683 transitions. [2023-11-19 07:49:56,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.83333333333333) internal successors, (683), 6 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,831 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,832 INFO L175 Difference]: Start difference. First operand has 89 places, 159 transitions, 1134 flow. Second operand 6 states and 683 transitions. [2023-11-19 07:49:56,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 304 transitions, 2364 flow [2023-11-19 07:49:56,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 304 transitions, 2364 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:56,861 INFO L231 Difference]: Finished difference. Result has 97 places, 262 transitions, 2044 flow [2023-11-19 07:49:56,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2044, PETRI_PLACES=97, PETRI_TRANSITIONS=262} [2023-11-19 07:49:56,864 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 38 predicate places. [2023-11-19 07:49:56,865 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 262 transitions, 2044 flow [2023-11-19 07:49:56,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:56,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:56,866 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:56,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:49:56,866 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:49:56,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash -694906988, now seen corresponding path program 1 times [2023-11-19 07:49:56,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:56,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500927164] [2023-11-19 07:49:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:57,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:57,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500927164] [2023-11-19 07:49:57,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500927164] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:57,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395085423] [2023-11-19 07:49:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:57,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:57,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:57,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:57,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:49:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:57,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:49:57,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:57,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-19 07:49:57,960 INFO L378 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 [2023-11-19 07:49:57,998 INFO L378 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 19 treesize of output 18 [2023-11-19 07:49:58,053 INFO L378 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 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-19 07:49:58,119 INFO L378 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 0 case distinctions, treesize of input 33 treesize of output 38 [2023-11-19 07:49:58,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:58,203 INFO L378 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 37 treesize of output 26 [2023-11-19 07:49:58,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:58,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:58,298 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_199 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of1ForFork0_~t~0.base v_ArrVal_199) |c_ULTIMATE.start_main_~#ts~0#1.base|) |c_ULTIMATE.start_main_~#ts~0#1.offset|) 0)) (forall ((v_ArrVal_199 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of1ForFork0_~t~0.base v_ArrVal_199) |c_ULTIMATE.start_main_~#ts~0#1.base|) (+ 2 |c_ULTIMATE.start_main_~#ts~0#1.offset|)) 0)) (forall ((v_ArrVal_199 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of1ForFork0_~t~0.base v_ArrVal_199) |c_ULTIMATE.start_main_~#ts~0#1.base|) (+ 3 |c_ULTIMATE.start_main_~#ts~0#1.offset|)) 0)) (forall ((v_ArrVal_199 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of1ForFork0_~t~0.base v_ArrVal_199) |c_ULTIMATE.start_main_~#ts~0#1.base|) (+ |c_ULTIMATE.start_main_~#ts~0#1.offset| 1)) 0))) is different from false [2023-11-19 07:49:58,325 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 3 |c_ULTIMATE.start_main_~#ts~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base|) .cse1 0)))) (and (forall ((v_ArrVal_199 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_199) |c_ULTIMATE.start_main_~#ts~0#1.base|) (+ 2 |c_ULTIMATE.start_main_~#ts~0#1.offset|)) 0)) (forall ((v_ArrVal_199 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_199) |c_ULTIMATE.start_main_~#ts~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_199 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_199) |c_ULTIMATE.start_main_~#ts~0#1.base|) (+ |c_ULTIMATE.start_main_~#ts~0#1.offset| 1)) 0)) (forall ((v_ArrVal_199 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_199) |c_ULTIMATE.start_main_~#ts~0#1.base|) |c_ULTIMATE.start_main_~#ts~0#1.offset|) 0))))) is different from false [2023-11-19 07:49:58,354 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 2 |c_ULTIMATE.start_main_~#ts~0#1.offset|)) (.cse2 (+ 3 |c_ULTIMATE.start_main_~#ts~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base|) .cse1 0) .cse2 0)))) (and (forall ((v_ArrVal_199 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_199) |c_ULTIMATE.start_main_~#ts~0#1.base|) |c_ULTIMATE.start_main_~#ts~0#1.offset|) 0)) (forall ((v_ArrVal_199 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_199) |c_ULTIMATE.start_main_~#ts~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_199 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_199) |c_ULTIMATE.start_main_~#ts~0#1.base|) (+ |c_ULTIMATE.start_main_~#ts~0#1.offset| 1)) 0)) (forall ((v_ArrVal_199 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of1ForFork0_~t~0.base v_ArrVal_199) |c_ULTIMATE.start_main_~#ts~0#1.base|) .cse2) 0))))) is different from false [2023-11-19 07:50:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-19 07:50:02,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395085423] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:02,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:02,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2023-11-19 07:50:02,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942716119] [2023-11-19 07:50:02,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:02,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-19 07:50:02,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:02,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-19 07:50:02,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=460, Unknown=3, NotChecked=138, Total=702 [2023-11-19 07:50:02,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 191 [2023-11-19 07:50:02,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 262 transitions, 2044 flow. Second operand has 27 states, 27 states have (on average 60.592592592592595) internal successors, (1636), 27 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:02,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:02,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 191 [2023-11-19 07:50:02,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:03,802 INFO L124 PetriNetUnfolderBase]: 631/1458 cut-off events. [2023-11-19 07:50:03,802 INFO L125 PetriNetUnfolderBase]: For 3364/3364 co-relation queries the response was YES. [2023-11-19 07:50:03,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6479 conditions, 1458 events. 631/1458 cut-off events. For 3364/3364 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9146 event pairs, 83 based on Foata normal form. 10/1368 useless extension candidates. Maximal degree in co-relation 6377. Up to 1331 conditions per place. [2023-11-19 07:50:03,820 INFO L140 encePairwiseOnDemand]: 181/191 looper letters, 304 selfloop transitions, 12 changer transitions 12/330 dead transitions. [2023-11-19 07:50:03,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 330 transitions, 3085 flow [2023-11-19 07:50:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:50:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:50:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 699 transitions. [2023-11-19 07:50:03,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36596858638743457 [2023-11-19 07:50:03,825 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 699 transitions. [2023-11-19 07:50:03,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 699 transitions. [2023-11-19 07:50:03,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:03,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 699 transitions. [2023-11-19 07:50:03,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 69.9) internal successors, (699), 10 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:03,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:03,833 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:03,834 INFO L175 Difference]: Start difference. First operand has 97 places, 262 transitions, 2044 flow. Second operand 10 states and 699 transitions. [2023-11-19 07:50:03,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 330 transitions, 3085 flow [2023-11-19 07:50:03,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 330 transitions, 2941 flow, removed 72 selfloop flow, removed 0 redundant places. [2023-11-19 07:50:03,884 INFO L231 Difference]: Finished difference. Result has 107 places, 265 transitions, 1940 flow [2023-11-19 07:50:03,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1940, PETRI_PLACES=107, PETRI_TRANSITIONS=265} [2023-11-19 07:50:03,888 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 48 predicate places. [2023-11-19 07:50:03,888 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 265 transitions, 1940 flow [2023-11-19 07:50:03,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 60.592592592592595) internal successors, (1636), 27 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:03,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:03,889 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:03,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:04,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:04,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:50:04,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash -809315380, now seen corresponding path program 1 times [2023-11-19 07:50:04,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:04,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235027103] [2023-11-19 07:50:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:04,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:04,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:04,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235027103] [2023-11-19 07:50:04,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235027103] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:04,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115942051] [2023-11-19 07:50:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:04,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:04,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:04,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:04,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:50:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:04,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-19 07:50:04,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:04,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-19 07:50:04,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-19 07:50:05,091 INFO L378 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 [2023-11-19 07:50:05,127 INFO L378 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 19 treesize of output 18 [2023-11-19 07:50:05,174 INFO L378 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 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-19 07:50:05,226 INFO L378 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 0 case distinctions, treesize of input 33 treesize of output 38 [2023-11-19 07:50:05,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:50:05,292 INFO L378 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 37 treesize of output 26 [2023-11-19 07:50:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:05,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:05,354 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_298 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_298) c_threadThread1of1ForFork0_~t~0.base) (+ 2 c_threadThread1of1ForFork0_~t~0.offset)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_298 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_298) c_threadThread1of1ForFork0_~t~0.base) (+ 3 c_threadThread1of1ForFork0_~t~0.offset)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_298 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_298) c_threadThread1of1ForFork0_~t~0.base) (+ c_threadThread1of1ForFork0_~t~0.offset 1)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_298 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_298) c_threadThread1of1ForFork0_~t~0.base) c_threadThread1of1ForFork0_~t~0.offset) |c_threadThread1of1ForFork0_#t~nondet4|))) is different from false [2023-11-19 07:50:05,382 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 3 c_threadThread1of1ForFork0_~t~0.offset))) (let ((.cse0 (store |c_#race| c_threadThread1of1ForFork0_~t~0.base (store (select |c_#race| c_threadThread1of1ForFork0_~t~0.base) .cse1 |c_threadThread1of1ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_298 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_298) c_threadThread1of1ForFork0_~t~0.base) (+ c_threadThread1of1ForFork0_~t~0.offset 1)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_298 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_298) c_threadThread1of1ForFork0_~t~0.base) .cse1) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_298 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_298) c_threadThread1of1ForFork0_~t~0.base) (+ 2 c_threadThread1of1ForFork0_~t~0.offset)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_298 (Array Int Int))) (= |c_threadThread1of1ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_298) c_threadThread1of1ForFork0_~t~0.base) c_threadThread1of1ForFork0_~t~0.offset)))))) is different from false [2023-11-19 07:50:05,406 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 2 c_threadThread1of1ForFork0_~t~0.offset)) (.cse2 (+ 3 c_threadThread1of1ForFork0_~t~0.offset))) (let ((.cse0 (store |c_#race| c_threadThread1of1ForFork0_~t~0.base (store (store (select |c_#race| c_threadThread1of1ForFork0_~t~0.base) .cse1 |c_threadThread1of1ForFork0_#t~nondet4|) .cse2 |c_threadThread1of1ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_298 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_298) c_threadThread1of1ForFork0_~t~0.base) .cse1) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_298 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_298) c_threadThread1of1ForFork0_~t~0.base) c_threadThread1of1ForFork0_~t~0.offset) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_298 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_298) c_threadThread1of1ForFork0_~t~0.base) .cse2) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_298 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#ts~0#1.base| v_ArrVal_298) c_threadThread1of1ForFork0_~t~0.base) (+ c_threadThread1of1ForFork0_~t~0.offset 1)) |c_threadThread1of1ForFork0_#t~nondet4|))))) is different from false [2023-11-19 07:50:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-19 07:50:07,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115942051] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:07,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:07,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2023-11-19 07:50:07,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102402746] [2023-11-19 07:50:07,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:07,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-19 07:50:07,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:07,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-19 07:50:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=460, Unknown=3, NotChecked=138, Total=702 [2023-11-19 07:50:07,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 191 [2023-11-19 07:50:07,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 265 transitions, 1940 flow. Second operand has 27 states, 27 states have (on average 52.592592592592595) internal successors, (1420), 27 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:07,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:07,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 191 [2023-11-19 07:50:07,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:10,485 INFO L124 PetriNetUnfolderBase]: 658/1514 cut-off events. [2023-11-19 07:50:10,485 INFO L125 PetriNetUnfolderBase]: For 3421/3421 co-relation queries the response was YES. [2023-11-19 07:50:10,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6822 conditions, 1514 events. 658/1514 cut-off events. For 3421/3421 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 9659 event pairs, 57 based on Foata normal form. 0/1434 useless extension candidates. Maximal degree in co-relation 6708. Up to 939 conditions per place. [2023-11-19 07:50:10,506 INFO L140 encePairwiseOnDemand]: 161/191 looper letters, 315 selfloop transitions, 136 changer transitions 35/488 dead transitions. [2023-11-19 07:50:10,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 488 transitions, 4234 flow [2023-11-19 07:50:10,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:50:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-19 07:50:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1240 transitions. [2023-11-19 07:50:10,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416919261504547 [2023-11-19 07:50:10,513 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1240 transitions. [2023-11-19 07:50:10,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1240 transitions. [2023-11-19 07:50:10,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:10,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1240 transitions. [2023-11-19 07:50:10,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 65.26315789473684) internal successors, (1240), 19 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:10,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 191.0) internal successors, (3820), 20 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:10,528 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 191.0) internal successors, (3820), 20 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:10,528 INFO L175 Difference]: Start difference. First operand has 107 places, 265 transitions, 1940 flow. Second operand 19 states and 1240 transitions. [2023-11-19 07:50:10,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 488 transitions, 4234 flow [2023-11-19 07:50:10,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 488 transitions, 4207 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:50:10,570 INFO L231 Difference]: Finished difference. Result has 127 places, 304 transitions, 2756 flow [2023-11-19 07:50:10,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2756, PETRI_PLACES=127, PETRI_TRANSITIONS=304} [2023-11-19 07:50:10,573 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 68 predicate places. [2023-11-19 07:50:10,573 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 304 transitions, 2756 flow [2023-11-19 07:50:10,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 52.592592592592595) internal successors, (1420), 27 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:10,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:10,576 INFO L208 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] [2023-11-19 07:50:10,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:10,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:10,790 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:50:10,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:10,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1558882150, now seen corresponding path program 1 times [2023-11-19 07:50:10,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:10,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172565333] [2023-11-19 07:50:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:10,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:10,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:10,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172565333] [2023-11-19 07:50:10,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172565333] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:10,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208710819] [2023-11-19 07:50:10,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:10,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:10,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:10,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:10,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:50:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:11,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:50:11,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:11,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:11,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208710819] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:11,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:11,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-19 07:50:11,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966249455] [2023-11-19 07:50:11,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:11,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:50:11,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:11,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:50:11,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:50:11,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 191 [2023-11-19 07:50:11,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 304 transitions, 2756 flow. Second operand has 9 states, 9 states have (on average 106.0) internal successors, (954), 9 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:11,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:11,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 191 [2023-11-19 07:50:11,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:11,480 INFO L124 PetriNetUnfolderBase]: 237/735 cut-off events. [2023-11-19 07:50:11,480 INFO L125 PetriNetUnfolderBase]: For 2650/2660 co-relation queries the response was YES. [2023-11-19 07:50:11,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3380 conditions, 735 events. 237/735 cut-off events. For 2650/2660 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4552 event pairs, 7 based on Foata normal form. 0/733 useless extension candidates. Maximal degree in co-relation 3279. Up to 240 conditions per place. [2023-11-19 07:50:11,491 INFO L140 encePairwiseOnDemand]: 186/191 looper letters, 22 selfloop transitions, 9 changer transitions 0/223 dead transitions. [2023-11-19 07:50:11,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 223 transitions, 2098 flow [2023-11-19 07:50:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:50:11,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 643 transitions. [2023-11-19 07:50:11,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5610820244328097 [2023-11-19 07:50:11,495 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 643 transitions. [2023-11-19 07:50:11,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 643 transitions. [2023-11-19 07:50:11,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:11,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 643 transitions. [2023-11-19 07:50:11,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.16666666666667) internal successors, (643), 6 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:11,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:11,501 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:11,501 INFO L175 Difference]: Start difference. First operand has 127 places, 304 transitions, 2756 flow. Second operand 6 states and 643 transitions. [2023-11-19 07:50:11,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 223 transitions, 2098 flow [2023-11-19 07:50:11,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 223 transitions, 2010 flow, removed 22 selfloop flow, removed 8 redundant places. [2023-11-19 07:50:11,531 INFO L231 Difference]: Finished difference. Result has 109 places, 219 transitions, 1931 flow [2023-11-19 07:50:11,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1931, PETRI_PLACES=109, PETRI_TRANSITIONS=219} [2023-11-19 07:50:11,532 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 50 predicate places. [2023-11-19 07:50:11,532 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 219 transitions, 1931 flow [2023-11-19 07:50:11,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.0) internal successors, (954), 9 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:11,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:11,533 INFO L208 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] [2023-11-19 07:50:11,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:11,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:50:11,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:50:11,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:11,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1064407109, now seen corresponding path program 1 times [2023-11-19 07:50:11,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:11,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496413357] [2023-11-19 07:50:11,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:11,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:12,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496413357] [2023-11-19 07:50:12,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496413357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890022369] [2023-11-19 07:50:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:12,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:12,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:12,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:12,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:50:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:12,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-19 07:50:12,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:12,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-19 07:50:13,166 INFO L378 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 [2023-11-19 07:50:13,221 INFO L378 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 19 treesize of output 18 [2023-11-19 07:50:13,271 INFO L378 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 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-19 07:50:13,354 INFO L378 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 0 case distinctions, treesize of input 33 treesize of output 38 [2023-11-19 07:50:13,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:50:13,421 INFO L378 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 37 treesize of output 26 [2023-11-19 07:50:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:13,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:13,496 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_489 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_489) c_threadThread1of1ForFork0_~t~0.base) (+ 3 c_threadThread1of1ForFork0_~t~0.offset)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_489 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_489) c_threadThread1of1ForFork0_~t~0.base) (+ c_threadThread1of1ForFork0_~t~0.offset 1)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_489 (Array Int Int))) (= |c_threadThread1of1ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_489) c_threadThread1of1ForFork0_~t~0.base) c_threadThread1of1ForFork0_~t~0.offset))) (forall ((v_ArrVal_489 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_489) c_threadThread1of1ForFork0_~t~0.base) (+ 2 c_threadThread1of1ForFork0_~t~0.offset)) |c_threadThread1of1ForFork0_#t~nondet4|))) is different from false [2023-11-19 07:50:13,521 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 3 c_threadThread1of1ForFork0_~t~0.offset))) (let ((.cse0 (store |c_#race| c_threadThread1of1ForFork0_~t~0.base (store (select |c_#race| c_threadThread1of1ForFork0_~t~0.base) .cse1 |c_threadThread1of1ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_489 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_489) c_threadThread1of1ForFork0_~t~0.base) .cse1) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_489 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_489) c_threadThread1of1ForFork0_~t~0.base) c_threadThread1of1ForFork0_~t~0.offset) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_489 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_489) c_threadThread1of1ForFork0_~t~0.base) (+ c_threadThread1of1ForFork0_~t~0.offset 1)) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_489 (Array Int Int))) (= |c_threadThread1of1ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_489) c_threadThread1of1ForFork0_~t~0.base) (+ 2 c_threadThread1of1ForFork0_~t~0.offset))))))) is different from false [2023-11-19 07:50:13,543 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 2 c_threadThread1of1ForFork0_~t~0.offset)) (.cse2 (+ 3 c_threadThread1of1ForFork0_~t~0.offset))) (let ((.cse0 (store |c_#race| c_threadThread1of1ForFork0_~t~0.base (store (store (select |c_#race| c_threadThread1of1ForFork0_~t~0.base) .cse1 |c_threadThread1of1ForFork0_#t~nondet4|) .cse2 |c_threadThread1of1ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_489 (Array Int Int))) (= |c_threadThread1of1ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_489) c_threadThread1of1ForFork0_~t~0.base) (+ c_threadThread1of1ForFork0_~t~0.offset 1)))) (forall ((v_ArrVal_489 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_489) c_threadThread1of1ForFork0_~t~0.base) c_threadThread1of1ForFork0_~t~0.offset) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_489 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_489) c_threadThread1of1ForFork0_~t~0.base) .cse1) |c_threadThread1of1ForFork0_#t~nondet4|)) (forall ((v_ArrVal_489 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_489) c_threadThread1of1ForFork0_~t~0.base) .cse2) |c_threadThread1of1ForFork0_#t~nondet4|))))) is different from false [2023-11-19 07:50:17,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:50:17,704 INFO L378 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 49 [2023-11-19 07:50:17,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:50:17,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 26 [2023-11-19 07:50:17,726 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-19 07:50:17,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-19 07:50:17,734 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-19 07:50:17,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-19 07:50:17,741 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-19 07:50:17,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-19 07:50:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:19,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890022369] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:19,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:19,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 28 [2023-11-19 07:50:19,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062459997] [2023-11-19 07:50:19,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:19,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-19 07:50:19,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:19,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-19 07:50:19,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=604, Unknown=6, NotChecked=156, Total=870 [2023-11-19 07:50:20,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 191 [2023-11-19 07:50:20,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 219 transitions, 1931 flow. Second operand has 30 states, 30 states have (on average 49.46666666666667) internal successors, (1484), 30 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:20,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:20,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 191 [2023-11-19 07:50:20,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:24,208 INFO L124 PetriNetUnfolderBase]: 458/1087 cut-off events. [2023-11-19 07:50:24,208 INFO L125 PetriNetUnfolderBase]: For 3548/3550 co-relation queries the response was YES. [2023-11-19 07:50:24,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5535 conditions, 1087 events. 458/1087 cut-off events. For 3548/3550 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6462 event pairs, 31 based on Foata normal form. 2/1054 useless extension candidates. Maximal degree in co-relation 5417. Up to 354 conditions per place. [2023-11-19 07:50:24,225 INFO L140 encePairwiseOnDemand]: 170/191 looper letters, 274 selfloop transitions, 127 changer transitions 9/412 dead transitions. [2023-11-19 07:50:24,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 412 transitions, 4025 flow [2023-11-19 07:50:24,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-19 07:50:24,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-19 07:50:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1297 transitions. [2023-11-19 07:50:24,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29524243114045073 [2023-11-19 07:50:24,233 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1297 transitions. [2023-11-19 07:50:24,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1297 transitions. [2023-11-19 07:50:24,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:24,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1297 transitions. [2023-11-19 07:50:24,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 56.391304347826086) internal successors, (1297), 23 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:24,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 191.0) internal successors, (4584), 24 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:24,249 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 191.0) internal successors, (4584), 24 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:24,249 INFO L175 Difference]: Start difference. First operand has 109 places, 219 transitions, 1931 flow. Second operand 23 states and 1297 transitions. [2023-11-19 07:50:24,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 412 transitions, 4025 flow [2023-11-19 07:50:24,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 412 transitions, 4001 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-19 07:50:24,285 INFO L231 Difference]: Finished difference. Result has 134 places, 278 transitions, 2956 flow [2023-11-19 07:50:24,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2956, PETRI_PLACES=134, PETRI_TRANSITIONS=278} [2023-11-19 07:50:24,288 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 75 predicate places. [2023-11-19 07:50:24,289 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 278 transitions, 2956 flow [2023-11-19 07:50:24,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 49.46666666666667) internal successors, (1484), 30 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:24,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:24,290 INFO L208 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] [2023-11-19 07:50:24,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:24,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:50:24,504 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:50:24,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:24,504 INFO L85 PathProgramCache]: Analyzing trace with hash 173595536, now seen corresponding path program 1 times [2023-11-19 07:50:24,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:24,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561783184] [2023-11-19 07:50:24,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:24,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:25,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:25,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561783184] [2023-11-19 07:50:25,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561783184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:25,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807669056] [2023-11-19 07:50:25,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:25,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:25,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:25,026 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:25,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:50:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:50:25,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:25,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-19 07:50:25,340 INFO L378 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 [2023-11-19 07:50:25,379 INFO L378 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 19 treesize of output 18 [2023-11-19 07:50:25,429 INFO L378 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 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-19 07:50:25,497 INFO L378 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 0 case distinctions, treesize of input 33 treesize of output 38 [2023-11-19 07:50:25,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:50:25,626 INFO L378 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 37 treesize of output 26 [2023-11-19 07:50:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:25,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:28,047 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 3 |c_ULTIMATE.start_main_~#tids~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1 0)))) (and (forall ((v_threadThread1of1ForFork0_~t~0.base_41 Int)) (or (forall ((v_ArrVal_589 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of1ForFork0_~t~0.base_41 v_ArrVal_589) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ 2 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) 0)) (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~t~0.base_41))) (forall ((v_threadThread1of1ForFork0_~t~0.base_41 Int)) (or (forall ((v_ArrVal_589 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of1ForFork0_~t~0.base_41 v_ArrVal_589) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ |c_ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0)) (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~t~0.base_41))) (forall ((v_threadThread1of1ForFork0_~t~0.base_41 Int)) (or (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~t~0.base_41) (forall ((v_ArrVal_589 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of1ForFork0_~t~0.base_41 v_ArrVal_589) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1) 0)))) (forall ((v_threadThread1of1ForFork0_~t~0.base_41 Int)) (or (forall ((v_ArrVal_589 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of1ForFork0_~t~0.base_41 v_ArrVal_589) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)) (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~t~0.base_41)))))) is different from false [2023-11-19 07:50:28,094 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 2 |c_ULTIMATE.start_main_~#tids~0#1.offset|)) (.cse2 (+ 3 |c_ULTIMATE.start_main_~#tids~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1 0) .cse2 0)))) (and (forall ((v_threadThread1of1ForFork0_~t~0.base_41 Int)) (or (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~t~0.base_41) (forall ((v_ArrVal_589 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of1ForFork0_~t~0.base_41 v_ArrVal_589) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ |c_ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0)))) (forall ((v_threadThread1of1ForFork0_~t~0.base_41 Int)) (or (forall ((v_ArrVal_589 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of1ForFork0_~t~0.base_41 v_ArrVal_589) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse1) 0)) (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~t~0.base_41))) (forall ((v_threadThread1of1ForFork0_~t~0.base_41 Int)) (or (forall ((v_ArrVal_589 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of1ForFork0_~t~0.base_41 v_ArrVal_589) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)) (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~t~0.base_41))) (forall ((v_threadThread1of1ForFork0_~t~0.base_41 Int)) (or (forall ((v_ArrVal_589 (Array Int Int))) (= (select (select (store .cse0 v_threadThread1of1ForFork0_~t~0.base_41 v_ArrVal_589) |c_ULTIMATE.start_main_~#tids~0#1.base|) .cse2) 0)) (< |c_threadThread1of1ForFork0_#in~arg.base| v_threadThread1of1ForFork0_~t~0.base_41)))))) is different from false [2023-11-19 07:50:32,343 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:50:32,343 INFO L378 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 51 [2023-11-19 07:50:32,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:50:32,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 36 [2023-11-19 07:50:32,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-19 07:50:32,365 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-19 07:50:32,366 INFO L378 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-19 07:50:32,382 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-19 07:50:32,382 INFO L378 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 1 [2023-11-19 07:50:32,392 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-19 07:50:32,393 INFO L378 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 1 [2023-11-19 07:50:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:34,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807669056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:34,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:34,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 27 [2023-11-19 07:50:34,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617888518] [2023-11-19 07:50:34,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:34,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-19 07:50:34,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:34,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-19 07:50:34,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=566, Unknown=19, NotChecked=102, Total=812 [2023-11-19 07:50:34,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 191 [2023-11-19 07:50:34,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 278 transitions, 2956 flow. Second operand has 29 states, 29 states have (on average 57.55172413793103) internal successors, (1669), 29 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:34,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:34,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 191 [2023-11-19 07:50:34,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:35,817 INFO L124 PetriNetUnfolderBase]: 438/1054 cut-off events. [2023-11-19 07:50:35,817 INFO L125 PetriNetUnfolderBase]: For 6102/6112 co-relation queries the response was YES. [2023-11-19 07:50:35,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6168 conditions, 1054 events. 438/1054 cut-off events. For 6102/6112 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6157 event pairs, 69 based on Foata normal form. 23/1042 useless extension candidates. Maximal degree in co-relation 6036. Up to 964 conditions per place. [2023-11-19 07:50:35,836 INFO L140 encePairwiseOnDemand]: 182/191 looper letters, 290 selfloop transitions, 14 changer transitions 2/308 dead transitions. [2023-11-19 07:50:35,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 308 transitions, 3723 flow [2023-11-19 07:50:35,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:50:35,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:50:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 633 transitions. [2023-11-19 07:50:35,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33141361256544505 [2023-11-19 07:50:35,840 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 633 transitions. [2023-11-19 07:50:35,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 633 transitions. [2023-11-19 07:50:35,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:35,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 633 transitions. [2023-11-19 07:50:35,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.3) internal successors, (633), 10 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:35,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:35,849 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:35,849 INFO L175 Difference]: Start difference. First operand has 134 places, 278 transitions, 2956 flow. Second operand 10 states and 633 transitions. [2023-11-19 07:50:35,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 308 transitions, 3723 flow [2023-11-19 07:50:35,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 308 transitions, 3570 flow, removed 34 selfloop flow, removed 13 redundant places. [2023-11-19 07:50:35,907 INFO L231 Difference]: Finished difference. Result has 129 places, 276 transitions, 2823 flow [2023-11-19 07:50:35,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2823, PETRI_PLACES=129, PETRI_TRANSITIONS=276} [2023-11-19 07:50:35,908 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 70 predicate places. [2023-11-19 07:50:35,908 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 276 transitions, 2823 flow [2023-11-19 07:50:35,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 57.55172413793103) internal successors, (1669), 29 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:35,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:35,910 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:35,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:36,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:50:36,125 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:50:36,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:36,125 INFO L85 PathProgramCache]: Analyzing trace with hash -525674166, now seen corresponding path program 2 times [2023-11-19 07:50:36,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:36,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936403617] [2023-11-19 07:50:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:36,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:36,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:36,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936403617] [2023-11-19 07:50:36,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936403617] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:36,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316219553] [2023-11-19 07:50:36,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:50:36,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:36,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:36,913 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:36,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa3a83c-09d4-4339-a0dc-43055d157a83/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:50:37,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:50:37,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:50:37,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:50:37,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:37,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-11-19 07:50:37,337 INFO L378 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 [2023-11-19 07:50:37,382 INFO L378 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 [2023-11-19 07:50:37,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:50:37,443 INFO L378 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 [2023-11-19 07:50:37,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:50:37,515 INFO L378 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 [2023-11-19 07:50:37,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:50:37,589 INFO L378 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 43 treesize of output 32 [2023-11-19 07:50:37,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:50:37,685 INFO L378 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 43 treesize of output 32