./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 13:43:28,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 13:43:28,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 13:43:28,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 13:43:28,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 13:43:28,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 13:43:28,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 13:43:28,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 13:43:28,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 13:43:28,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 13:43:28,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 13:43:28,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 13:43:28,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 13:43:28,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 13:43:28,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 13:43:28,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 13:43:28,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 13:43:28,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 13:43:28,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 13:43:28,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 13:43:28,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 13:43:28,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 13:43:28,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 13:43:28,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 13:43:28,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 13:43:28,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 13:43:28,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 13:43:28,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 13:43:28,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 13:43:28,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 13:43:28,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 13:43:28,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 13:43:28,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 13:43:28,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 13:43:28,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 13:43:28,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 13:43:28,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 13:43:28,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 13:43:28,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 13:43:28,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 13:43:28,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 13:43:28,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 13:43:28,986 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 13:43:28,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 13:43:28,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 13:43:28,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 13:43:28,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 13:43:28,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 13:43:28,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 13:43:28,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 13:43:28,990 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 13:43:28,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 13:43:28,991 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 13:43:28,991 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 13:43:28,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 13:43:28,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 13:43:28,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 13:43:28,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 13:43:28,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 13:43:28,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 13:43:28,992 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 13:43:28,993 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 13:43:28,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 13:43:28,993 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 13:43:28,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 13:43:28,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 13:43:28,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 13:43:28,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 13:43:28,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:43:28,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 13:43:28,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 13:43:28,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 13:43:28,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 13:43:28,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 13:43:28,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 13:43:28,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 13:43:28,996 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 13:43:28,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 13:43:28,996 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 13:43:28,996 INFO L138 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 13:43:29,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 13:43:29,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 13:43:29,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 13:43:29,336 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 13:43:29,337 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 13:43:29,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i [2023-08-30 13:43:30,445 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 13:43:30,725 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 13:43:30,725 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i [2023-08-30 13:43:30,744 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49826ca51/b7b5d876778949348763af637b77dea9/FLAG7749fdf63 [2023-08-30 13:43:30,754 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49826ca51/b7b5d876778949348763af637b77dea9 [2023-08-30 13:43:30,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 13:43:30,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 13:43:30,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 13:43:30,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 13:43:30,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 13:43:30,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:43:30" (1/1) ... [2023-08-30 13:43:30,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a01eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:30, skipping insertion in model container [2023-08-30 13:43:30,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:43:30" (1/1) ... [2023-08-30 13:43:30,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 13:43:30,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 13:43:30,958 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i[818,831] [2023-08-30 13:43:31,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:43:31,185 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 13:43:31,195 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-3.i[818,831] [2023-08-30 13:43:31,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:43:31,312 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:43:31,312 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:43:31,318 INFO L208 MainTranslator]: Completed translation [2023-08-30 13:43:31,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:31 WrapperNode [2023-08-30 13:43:31,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 13:43:31,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 13:43:31,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 13:43:31,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 13:43:31,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:31" (1/1) ... [2023-08-30 13:43:31,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:31" (1/1) ... [2023-08-30 13:43:31,364 INFO L138 Inliner]: procedures = 365, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-08-30 13:43:31,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 13:43:31,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 13:43:31,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 13:43:31,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 13:43:31,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:31" (1/1) ... [2023-08-30 13:43:31,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:31" (1/1) ... [2023-08-30 13:43:31,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:31" (1/1) ... [2023-08-30 13:43:31,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:31" (1/1) ... [2023-08-30 13:43:31,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:31" (1/1) ... [2023-08-30 13:43:31,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:31" (1/1) ... [2023-08-30 13:43:31,388 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:31" (1/1) ... [2023-08-30 13:43:31,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:31" (1/1) ... [2023-08-30 13:43:31,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 13:43:31,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 13:43:31,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 13:43:31,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 13:43:31,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:31" (1/1) ... [2023-08-30 13:43:31,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:43:31,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:43:31,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 13:43:31,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 13:43:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 13:43:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 13:43:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 13:43:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 13:43:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 13:43:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2023-08-30 13:43:31,458 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2023-08-30 13:43:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 13:43:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 13:43:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 13:43:31,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 13:43:31,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 13:43:31,460 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 13:43:31,573 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 13:43:31,575 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 13:43:31,809 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 13:43:31,825 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 13:43:31,825 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 13:43:31,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:43:31 BoogieIcfgContainer [2023-08-30 13:43:31,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 13:43:31,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 13:43:31,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 13:43:31,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 13:43:31,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:43:30" (1/3) ... [2023-08-30 13:43:31,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54040c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:43:31, skipping insertion in model container [2023-08-30 13:43:31,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:43:31" (2/3) ... [2023-08-30 13:43:31,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54040c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:43:31, skipping insertion in model container [2023-08-30 13:43:31,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:43:31" (3/3) ... [2023-08-30 13:43:31,834 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-3.i [2023-08-30 13:43:31,840 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 13:43:31,848 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 13:43:31,848 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 13:43:31,848 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 13:43:31,889 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 13:43:31,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 98 transitions, 204 flow [2023-08-30 13:43:31,952 INFO L130 PetriNetUnfolder]: 7/97 cut-off events. [2023-08-30 13:43:31,953 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 13:43:31,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 97 events. 7/97 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-30 13:43:31,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 98 transitions, 204 flow [2023-08-30 13:43:31,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 77 transitions, 157 flow [2023-08-30 13:43:31,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:43:31,992 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 77 transitions, 157 flow [2023-08-30 13:43:31,994 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 77 transitions, 157 flow [2023-08-30 13:43:31,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 77 transitions, 157 flow [2023-08-30 13:43:32,011 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2023-08-30 13:43:32,011 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:43:32,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 5/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-30 13:43:32,013 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2023-08-30 13:43:33,805 INFO L134 LiptonReduction]: Checked pairs total: 1381 [2023-08-30 13:43:33,805 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-30 13:43:33,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:43:33,828 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58657ea3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:43:33,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 13:43:33,832 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-08-30 13:43:33,832 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:43:33,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:33,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 13:43:33,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:33,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:33,838 INFO L85 PathProgramCache]: Analyzing trace with hash 11221162, now seen corresponding path program 1 times [2023-08-30 13:43:33,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:33,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146401962] [2023-08-30 13:43:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:33,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:34,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:34,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146401962] [2023-08-30 13:43:34,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146401962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:43:34,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:43:34,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:43:34,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836213958] [2023-08-30 13:43:34,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:43:34,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:43:34,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:43:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:43:34,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176 [2023-08-30 13:43:34,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:34,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:34,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176 [2023-08-30 13:43:34,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:34,223 INFO L130 PetriNetUnfolder]: 70/130 cut-off events. [2023-08-30 13:43:34,223 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:43:34,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 130 events. 70/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 453 event pairs, 12 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 256. Up to 112 conditions per place. [2023-08-30 13:43:34,227 INFO L137 encePairwiseOnDemand]: 165/176 looper letters, 20 selfloop transitions, 6 changer transitions 0/26 dead transitions. [2023-08-30 13:43:34,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 26 transitions, 107 flow [2023-08-30 13:43:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:43:34,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:43:34,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-08-30 13:43:34,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321969696969697 [2023-08-30 13:43:34,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-08-30 13:43:34,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-08-30 13:43:34,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:34,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-08-30 13:43:34,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:34,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:34,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:34,264 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 37 flow. Second operand 3 states and 281 transitions. [2023-08-30 13:43:34,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 26 transitions, 107 flow [2023-08-30 13:43:34,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:43:34,267 INFO L231 Difference]: Finished difference. Result has 20 places, 21 transitions, 80 flow [2023-08-30 13:43:34,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=20, PETRI_TRANSITIONS=21} [2023-08-30 13:43:34,271 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-08-30 13:43:34,272 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 21 transitions, 80 flow [2023-08-30 13:43:34,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:34,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:34,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 13:43:34,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 13:43:34,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:34,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:34,279 INFO L85 PathProgramCache]: Analyzing trace with hash 347874172, now seen corresponding path program 1 times [2023-08-30 13:43:34,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:34,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610174666] [2023-08-30 13:43:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:34,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:34,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:34,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610174666] [2023-08-30 13:43:34,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610174666] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:43:34,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472428178] [2023-08-30 13:43:34,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:34,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:34,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:43:34,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:43:34,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 13:43:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:34,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 13:43:34,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:43:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:34,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:43:34,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472428178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:43:34,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:43:34,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 13:43:34,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754516494] [2023-08-30 13:43:34,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:43:34,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:43:34,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:34,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:43:34,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:43:34,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-08-30 13:43:34,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 21 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:34,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:34,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-08-30 13:43:34,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:34,624 INFO L130 PetriNetUnfolder]: 86/159 cut-off events. [2023-08-30 13:43:34,636 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 13:43:34,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 159 events. 86/159 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 584 event pairs, 10 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 425. Up to 99 conditions per place. [2023-08-30 13:43:34,638 INFO L137 encePairwiseOnDemand]: 172/176 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-30 13:43:34,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 45 transitions, 257 flow [2023-08-30 13:43:34,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:43:34,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:43:34,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-08-30 13:43:34,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127840909090909 [2023-08-30 13:43:34,641 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-08-30 13:43:34,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-08-30 13:43:34,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:34,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-08-30 13:43:34,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:34,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:34,645 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 176.0) internal successors, (880), 5 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:34,645 INFO L175 Difference]: Start difference. First operand has 20 places, 21 transitions, 80 flow. Second operand 4 states and 361 transitions. [2023-08-30 13:43:34,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 45 transitions, 257 flow [2023-08-30 13:43:34,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 45 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:43:34,647 INFO L231 Difference]: Finished difference. Result has 22 places, 21 transitions, 88 flow [2023-08-30 13:43:34,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=22, PETRI_TRANSITIONS=21} [2023-08-30 13:43:34,662 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-08-30 13:43:34,662 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 21 transitions, 88 flow [2023-08-30 13:43:34,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:34,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:34,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 13:43:34,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 13:43:34,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:34,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:34,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:34,864 INFO L85 PathProgramCache]: Analyzing trace with hash 347874140, now seen corresponding path program 1 times [2023-08-30 13:43:34,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:34,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146626568] [2023-08-30 13:43:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:34,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:34,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:34,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146626568] [2023-08-30 13:43:34,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146626568] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:43:34,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507725806] [2023-08-30 13:43:34,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:34,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:34,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:43:34,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:43:34,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 13:43:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:34,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:43:34,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:43:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:34,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:43:35,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:35,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507725806] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:43:35,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:43:35,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 13:43:35,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289789125] [2023-08-30 13:43:35,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:43:35,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:43:35,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:35,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:43:35,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:43:35,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176 [2023-08-30 13:43:35,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 21 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:35,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176 [2023-08-30 13:43:35,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:35,162 INFO L130 PetriNetUnfolder]: 143/262 cut-off events. [2023-08-30 13:43:35,162 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-08-30 13:43:35,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 262 events. 143/262 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 995 event pairs, 10 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 786. Up to 164 conditions per place. [2023-08-30 13:43:35,169 INFO L137 encePairwiseOnDemand]: 166/176 looper letters, 40 selfloop transitions, 32 changer transitions 0/72 dead transitions. [2023-08-30 13:43:35,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 72 transitions, 426 flow [2023-08-30 13:43:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 13:43:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 13:43:35,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 655 transitions. [2023-08-30 13:43:35,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5316558441558441 [2023-08-30 13:43:35,172 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 655 transitions. [2023-08-30 13:43:35,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 655 transitions. [2023-08-30 13:43:35,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:35,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 655 transitions. [2023-08-30 13:43:35,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,179 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,179 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 88 flow. Second operand 7 states and 655 transitions. [2023-08-30 13:43:35,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 72 transitions, 426 flow [2023-08-30 13:43:35,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 72 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:43:35,182 INFO L231 Difference]: Finished difference. Result has 32 places, 48 transitions, 362 flow [2023-08-30 13:43:35,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=362, PETRI_PLACES=32, PETRI_TRANSITIONS=48} [2023-08-30 13:43:35,183 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 13 predicate places. [2023-08-30 13:43:35,184 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 48 transitions, 362 flow [2023-08-30 13:43:35,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:35,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 13:43:35,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 13:43:35,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 13:43:35,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_function_dataraceErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:35,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash 347856696, now seen corresponding path program 1 times [2023-08-30 13:43:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:35,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026267795] [2023-08-30 13:43:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:35,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:35,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:35,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026267795] [2023-08-30 13:43:35,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026267795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:43:35,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:43:35,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:43:35,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412178220] [2023-08-30 13:43:35,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:43:35,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:43:35,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:35,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:43:35,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:43:35,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 176 [2023-08-30 13:43:35,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 48 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:35,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 176 [2023-08-30 13:43:35,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:35,553 INFO L130 PetriNetUnfolder]: 138/276 cut-off events. [2023-08-30 13:43:35,554 INFO L131 PetriNetUnfolder]: For 477/477 co-relation queries the response was YES. [2023-08-30 13:43:35,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 276 events. 138/276 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1225 event pairs, 24 based on Foata normal form. 13/263 useless extension candidates. Maximal degree in co-relation 1241. Up to 186 conditions per place. [2023-08-30 13:43:35,557 INFO L137 encePairwiseOnDemand]: 171/176 looper letters, 58 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2023-08-30 13:43:35,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 65 transitions, 625 flow [2023-08-30 13:43:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:43:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:43:35,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-08-30 13:43:35,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170454545454546 [2023-08-30 13:43:35,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-08-30 13:43:35,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-08-30 13:43:35,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:35,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-08-30 13:43:35,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,563 INFO L175 Difference]: Start difference. First operand has 32 places, 48 transitions, 362 flow. Second operand 3 states and 273 transitions. [2023-08-30 13:43:35,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 65 transitions, 625 flow [2023-08-30 13:43:35,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 65 transitions, 555 flow, removed 33 selfloop flow, removed 1 redundant places. [2023-08-30 13:43:35,571 INFO L231 Difference]: Finished difference. Result has 34 places, 45 transitions, 328 flow [2023-08-30 13:43:35,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=34, PETRI_TRANSITIONS=45} [2023-08-30 13:43:35,573 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 15 predicate places. [2023-08-30 13:43:35,573 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 45 transitions, 328 flow [2023-08-30 13:43:35,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:35,574 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 13:43:35,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 13:43:35,574 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:35,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:35,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2100802233, now seen corresponding path program 1 times [2023-08-30 13:43:35,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:35,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408624547] [2023-08-30 13:43:35,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:35,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:35,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 13:43:35,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:35,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408624547] [2023-08-30 13:43:35,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408624547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:43:35,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:43:35,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:43:35,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734407585] [2023-08-30 13:43:35,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:43:35,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:43:35,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:35,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:43:35,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:43:35,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176 [2023-08-30 13:43:35,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 45 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:35,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176 [2023-08-30 13:43:35,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:35,708 INFO L130 PetriNetUnfolder]: 126/265 cut-off events. [2023-08-30 13:43:35,708 INFO L131 PetriNetUnfolder]: For 518/518 co-relation queries the response was YES. [2023-08-30 13:43:35,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 265 events. 126/265 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1152 event pairs, 26 based on Foata normal form. 38/269 useless extension candidates. Maximal degree in co-relation 1219. Up to 141 conditions per place. [2023-08-30 13:43:35,711 INFO L137 encePairwiseOnDemand]: 167/176 looper letters, 33 selfloop transitions, 20 changer transitions 0/53 dead transitions. [2023-08-30 13:43:35,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 495 flow [2023-08-30 13:43:35,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:43:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:43:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-08-30 13:43:35,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2023-08-30 13:43:35,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-08-30 13:43:35,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-08-30 13:43:35,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:35,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-08-30 13:43:35,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,717 INFO L175 Difference]: Start difference. First operand has 34 places, 45 transitions, 328 flow. Second operand 3 states and 276 transitions. [2023-08-30 13:43:35,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 495 flow [2023-08-30 13:43:35,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 489 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:43:35,722 INFO L231 Difference]: Finished difference. Result has 37 places, 47 transitions, 458 flow [2023-08-30 13:43:35,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=37, PETRI_TRANSITIONS=47} [2023-08-30 13:43:35,725 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 18 predicate places. [2023-08-30 13:43:35,725 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 47 transitions, 458 flow [2023-08-30 13:43:35,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:35,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:43:35,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 13:43:35,726 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:35,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2101343042, now seen corresponding path program 1 times [2023-08-30 13:43:35,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:35,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473512571] [2023-08-30 13:43:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:35,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:35,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:35,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473512571] [2023-08-30 13:43:35,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473512571] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:43:35,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130366366] [2023-08-30 13:43:35,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:35,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:35,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:43:35,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:43:35,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 13:43:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:35,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 13:43:35,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:43:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:35,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:43:35,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:35,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130366366] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:43:35,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:43:35,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 13:43:35,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993952264] [2023-08-30 13:43:35,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:43:35,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 13:43:35,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:35,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 13:43:35,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-30 13:43:35,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-30 13:43:35,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 47 transitions, 458 flow. Second operand has 9 states, 9 states have (on average 78.77777777777777) internal successors, (709), 9 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:35,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:35,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-30 13:43:35,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:36,163 INFO L130 PetriNetUnfolder]: 260/517 cut-off events. [2023-08-30 13:43:36,164 INFO L131 PetriNetUnfolder]: For 1765/1765 co-relation queries the response was YES. [2023-08-30 13:43:36,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 517 events. 260/517 cut-off events. For 1765/1765 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2583 event pairs, 9 based on Foata normal form. 36/479 useless extension candidates. Maximal degree in co-relation 2724. Up to 198 conditions per place. [2023-08-30 13:43:36,168 INFO L137 encePairwiseOnDemand]: 166/176 looper letters, 70 selfloop transitions, 86 changer transitions 0/156 dead transitions. [2023-08-30 13:43:36,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 156 transitions, 1605 flow [2023-08-30 13:43:36,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 13:43:36,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 13:43:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1514 transitions. [2023-08-30 13:43:36,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779040404040404 [2023-08-30 13:43:36,173 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1514 transitions. [2023-08-30 13:43:36,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1514 transitions. [2023-08-30 13:43:36,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:36,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1514 transitions. [2023-08-30 13:43:36,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 84.11111111111111) internal successors, (1514), 18 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,183 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,183 INFO L175 Difference]: Start difference. First operand has 37 places, 47 transitions, 458 flow. Second operand 18 states and 1514 transitions. [2023-08-30 13:43:36,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 156 transitions, 1605 flow [2023-08-30 13:43:36,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 156 transitions, 1469 flow, removed 24 selfloop flow, removed 2 redundant places. [2023-08-30 13:43:36,193 INFO L231 Difference]: Finished difference. Result has 59 places, 112 transitions, 1256 flow [2023-08-30 13:43:36,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1256, PETRI_PLACES=59, PETRI_TRANSITIONS=112} [2023-08-30 13:43:36,194 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 40 predicate places. [2023-08-30 13:43:36,194 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 112 transitions, 1256 flow [2023-08-30 13:43:36,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 78.77777777777777) internal successors, (709), 9 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:36,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:43:36,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 13:43:36,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:36,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_dataraceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:36,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:36,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2101343043, now seen corresponding path program 1 times [2023-08-30 13:43:36,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:36,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487785731] [2023-08-30 13:43:36,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:36,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:36,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:36,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487785731] [2023-08-30 13:43:36,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487785731] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:43:36,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747508572] [2023-08-30 13:43:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:36,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:36,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:43:36,441 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:43:36,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 13:43:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:36,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 13:43:36,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:43:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:36,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:43:36,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747508572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:43:36,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:43:36,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 13:43:36,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103513010] [2023-08-30 13:43:36,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:43:36,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 13:43:36,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:36,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 13:43:36,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 13:43:36,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 176 [2023-08-30 13:43:36,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 112 transitions, 1256 flow. Second operand has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:36,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 176 [2023-08-30 13:43:36,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:36,641 INFO L130 PetriNetUnfolder]: 209/393 cut-off events. [2023-08-30 13:43:36,641 INFO L131 PetriNetUnfolder]: For 1473/1473 co-relation queries the response was YES. [2023-08-30 13:43:36,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 393 events. 209/393 cut-off events. For 1473/1473 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1656 event pairs, 20 based on Foata normal form. 40/379 useless extension candidates. Maximal degree in co-relation 2342. Up to 350 conditions per place. [2023-08-30 13:43:36,645 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 87 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2023-08-30 13:43:36,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 97 transitions, 1294 flow [2023-08-30 13:43:36,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:43:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:43:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 503 transitions. [2023-08-30 13:43:36,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47632575757575757 [2023-08-30 13:43:36,647 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 503 transitions. [2023-08-30 13:43:36,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 503 transitions. [2023-08-30 13:43:36,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:36,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 503 transitions. [2023-08-30 13:43:36,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,651 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,651 INFO L175 Difference]: Start difference. First operand has 59 places, 112 transitions, 1256 flow. Second operand 6 states and 503 transitions. [2023-08-30 13:43:36,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 97 transitions, 1294 flow [2023-08-30 13:43:36,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 97 transitions, 1242 flow, removed 24 selfloop flow, removed 2 redundant places. [2023-08-30 13:43:36,661 INFO L231 Difference]: Finished difference. Result has 57 places, 88 transitions, 1008 flow [2023-08-30 13:43:36,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1008, PETRI_PLACES=57, PETRI_TRANSITIONS=88} [2023-08-30 13:43:36,662 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 38 predicate places. [2023-08-30 13:43:36,662 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 88 transitions, 1008 flow [2023-08-30 13:43:36,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:36,663 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-30 13:43:36,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 13:43:36,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:36,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_function_dataraceErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:36,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash -717124171, now seen corresponding path program 1 times [2023-08-30 13:43:36,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:36,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612382196] [2023-08-30 13:43:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:36,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 13:43:36,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:36,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612382196] [2023-08-30 13:43:36,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612382196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:43:36,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:43:36,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:43:36,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372851657] [2023-08-30 13:43:36,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:43:36,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:43:36,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:36,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:43:36,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:43:36,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-08-30 13:43:36,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 88 transitions, 1008 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:36,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-08-30 13:43:36,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:36,971 INFO L130 PetriNetUnfolder]: 182/348 cut-off events. [2023-08-30 13:43:36,971 INFO L131 PetriNetUnfolder]: For 1522/1522 co-relation queries the response was YES. [2023-08-30 13:43:36,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2052 conditions, 348 events. 182/348 cut-off events. For 1522/1522 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1475 event pairs, 26 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 2022. Up to 190 conditions per place. [2023-08-30 13:43:36,974 INFO L137 encePairwiseOnDemand]: 171/176 looper letters, 67 selfloop transitions, 30 changer transitions 0/97 dead transitions. [2023-08-30 13:43:36,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 97 transitions, 1278 flow [2023-08-30 13:43:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:43:36,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:43:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-08-30 13:43:36,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2023-08-30 13:43:36,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-08-30 13:43:36,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-08-30 13:43:36,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:36,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-08-30 13:43:36,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,979 INFO L175 Difference]: Start difference. First operand has 57 places, 88 transitions, 1008 flow. Second operand 3 states and 262 transitions. [2023-08-30 13:43:36,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 97 transitions, 1278 flow [2023-08-30 13:43:36,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 97 transitions, 1236 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 13:43:36,987 INFO L231 Difference]: Finished difference. Result has 54 places, 81 transitions, 938 flow [2023-08-30 13:43:36,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=938, PETRI_PLACES=54, PETRI_TRANSITIONS=81} [2023-08-30 13:43:36,988 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 35 predicate places. [2023-08-30 13:43:36,988 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 81 transitions, 938 flow [2023-08-30 13:43:36,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:36,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:36,988 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-30 13:43:36,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 13:43:36,988 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_function_dataraceErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:36,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:36,989 INFO L85 PathProgramCache]: Analyzing trace with hash -717124188, now seen corresponding path program 1 times [2023-08-30 13:43:36,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:36,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419204262] [2023-08-30 13:43:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:36,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:37,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:37,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419204262] [2023-08-30 13:43:37,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419204262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:43:37,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:43:37,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:43:37,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929994379] [2023-08-30 13:43:37,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:43:37,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:43:37,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:37,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:43:37,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:43:37,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 176 [2023-08-30 13:43:37,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 81 transitions, 938 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:37,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:37,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 176 [2023-08-30 13:43:37,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:37,081 INFO L130 PetriNetUnfolder]: 155/303 cut-off events. [2023-08-30 13:43:37,081 INFO L131 PetriNetUnfolder]: For 1733/1733 co-relation queries the response was YES. [2023-08-30 13:43:37,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1824 conditions, 303 events. 155/303 cut-off events. For 1733/1733 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1251 event pairs, 18 based on Foata normal form. 27/330 useless extension candidates. Maximal degree in co-relation 1796. Up to 289 conditions per place. [2023-08-30 13:43:37,084 INFO L137 encePairwiseOnDemand]: 174/176 looper letters, 82 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2023-08-30 13:43:37,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 1106 flow [2023-08-30 13:43:37,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:43:37,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:43:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-08-30 13:43:37,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2023-08-30 13:43:37,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-08-30 13:43:37,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-08-30 13:43:37,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:37,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-08-30 13:43:37,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:37,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:37,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:37,088 INFO L175 Difference]: Start difference. First operand has 54 places, 81 transitions, 938 flow. Second operand 3 states and 262 transitions. [2023-08-30 13:43:37,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 83 transitions, 1106 flow [2023-08-30 13:43:37,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 1076 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:43:37,095 INFO L231 Difference]: Finished difference. Result has 54 places, 74 transitions, 824 flow [2023-08-30 13:43:37,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=824, PETRI_PLACES=54, PETRI_TRANSITIONS=74} [2023-08-30 13:43:37,096 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 35 predicate places. [2023-08-30 13:43:37,096 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 74 transitions, 824 flow [2023-08-30 13:43:37,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:37,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:37,096 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 13:43:37,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 13:43:37,097 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:37,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:37,097 INFO L85 PathProgramCache]: Analyzing trace with hash -236273720, now seen corresponding path program 2 times [2023-08-30 13:43:37,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:37,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75863638] [2023-08-30 13:43:37,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:37,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:37,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:37,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75863638] [2023-08-30 13:43:37,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75863638] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:43:37,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251700216] [2023-08-30 13:43:37,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:43:37,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:37,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:43:37,171 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:43:37,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 13:43:37,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:43:37,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:43:37,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 13:43:37,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:43:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:37,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:43:37,317 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:37,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251700216] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:43:37,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:43:37,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 13:43:37,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876377418] [2023-08-30 13:43:37,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:43:37,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 13:43:37,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:37,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 13:43:37,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 13:43:37,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176 [2023-08-30 13:43:37,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 74 transitions, 824 flow. Second operand has 13 states, 13 states have (on average 84.53846153846153) internal successors, (1099), 13 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:37,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:37,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176 [2023-08-30 13:43:37,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:37,549 INFO L130 PetriNetUnfolder]: 227/447 cut-off events. [2023-08-30 13:43:37,550 INFO L131 PetriNetUnfolder]: For 2747/2747 co-relation queries the response was YES. [2023-08-30 13:43:37,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 447 events. 227/447 cut-off events. For 2747/2747 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1818 event pairs, 31 based on Foata normal form. 42/489 useless extension candidates. Maximal degree in co-relation 2590. Up to 262 conditions per place. [2023-08-30 13:43:37,554 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 66 selfloop transitions, 85 changer transitions 0/151 dead transitions. [2023-08-30 13:43:37,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 151 transitions, 1868 flow [2023-08-30 13:43:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 13:43:37,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 13:43:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1071 transitions. [2023-08-30 13:43:37,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071022727272727 [2023-08-30 13:43:37,556 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1071 transitions. [2023-08-30 13:43:37,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1071 transitions. [2023-08-30 13:43:37,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:37,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1071 transitions. [2023-08-30 13:43:37,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 89.25) internal successors, (1071), 12 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:37,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:37,563 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:37,563 INFO L175 Difference]: Start difference. First operand has 54 places, 74 transitions, 824 flow. Second operand 12 states and 1071 transitions. [2023-08-30 13:43:37,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 151 transitions, 1868 flow [2023-08-30 13:43:37,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 151 transitions, 1857 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:43:37,572 INFO L231 Difference]: Finished difference. Result has 71 places, 123 transitions, 1741 flow [2023-08-30 13:43:37,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1741, PETRI_PLACES=71, PETRI_TRANSITIONS=123} [2023-08-30 13:43:37,572 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 52 predicate places. [2023-08-30 13:43:37,573 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 123 transitions, 1741 flow [2023-08-30 13:43:37,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 84.53846153846153) internal successors, (1099), 13 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:37,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:37,573 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:43:37,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 13:43:37,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 13:43:37,779 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:37,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:37,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1470633633, now seen corresponding path program 1 times [2023-08-30 13:43:37,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:37,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90111887] [2023-08-30 13:43:37,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:37,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:37,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:37,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90111887] [2023-08-30 13:43:37,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90111887] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:43:37,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515994517] [2023-08-30 13:43:37,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:37,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:37,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:43:37,843 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:43:37,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 13:43:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:37,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 13:43:37,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:43:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:37,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:43:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:38,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515994517] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:43:38,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:43:38,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-30 13:43:38,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494084467] [2023-08-30 13:43:38,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:43:38,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 13:43:38,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:38,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 13:43:38,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2023-08-30 13:43:38,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 176 [2023-08-30 13:43:38,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 123 transitions, 1741 flow. Second operand has 15 states, 15 states have (on average 79.66666666666667) internal successors, (1195), 15 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:38,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:38,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 176 [2023-08-30 13:43:38,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:38,421 INFO L130 PetriNetUnfolder]: 347/686 cut-off events. [2023-08-30 13:43:38,421 INFO L131 PetriNetUnfolder]: For 8543/8543 co-relation queries the response was YES. [2023-08-30 13:43:38,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4621 conditions, 686 events. 347/686 cut-off events. For 8543/8543 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3235 event pairs, 12 based on Foata normal form. 68/754 useless extension candidates. Maximal degree in co-relation 4584. Up to 297 conditions per place. [2023-08-30 13:43:38,428 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 99 selfloop transitions, 180 changer transitions 0/279 dead transitions. [2023-08-30 13:43:38,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 279 transitions, 3866 flow [2023-08-30 13:43:38,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-30 13:43:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-30 13:43:38,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2758 transitions. [2023-08-30 13:43:38,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474862258953168 [2023-08-30 13:43:38,436 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2758 transitions. [2023-08-30 13:43:38,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2758 transitions. [2023-08-30 13:43:38,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:38,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2758 transitions. [2023-08-30 13:43:38,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 83.57575757575758) internal successors, (2758), 33 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:38,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 176.0) internal successors, (5984), 34 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:38,453 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 176.0) internal successors, (5984), 34 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:38,453 INFO L175 Difference]: Start difference. First operand has 71 places, 123 transitions, 1741 flow. Second operand 33 states and 2758 transitions. [2023-08-30 13:43:38,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 279 transitions, 3866 flow [2023-08-30 13:43:38,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 279 transitions, 3701 flow, removed 73 selfloop flow, removed 3 redundant places. [2023-08-30 13:43:38,476 INFO L231 Difference]: Finished difference. Result has 118 places, 206 transitions, 3410 flow [2023-08-30 13:43:38,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3410, PETRI_PLACES=118, PETRI_TRANSITIONS=206} [2023-08-30 13:43:38,478 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 99 predicate places. [2023-08-30 13:43:38,478 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 206 transitions, 3410 flow [2023-08-30 13:43:38,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 79.66666666666667) internal successors, (1195), 15 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:38,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:38,478 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 13:43:38,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 13:43:38,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:38,685 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:38,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:38,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1338366197, now seen corresponding path program 1 times [2023-08-30 13:43:38,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:38,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007350032] [2023-08-30 13:43:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:38,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:38,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:38,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007350032] [2023-08-30 13:43:38,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007350032] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:43:38,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707432877] [2023-08-30 13:43:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:38,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:38,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:43:38,749 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:43:38,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 13:43:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:38,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 13:43:38,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:43:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:38,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:43:38,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:38,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707432877] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:43:38,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:43:38,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-30 13:43:38,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008524496] [2023-08-30 13:43:38,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:43:38,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 13:43:38,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:38,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 13:43:38,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-08-30 13:43:38,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-30 13:43:38,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 206 transitions, 3410 flow. Second operand has 15 states, 15 states have (on average 78.66666666666667) internal successors, (1180), 15 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:38,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:38,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-30 13:43:38,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:39,481 INFO L130 PetriNetUnfolder]: 631/1248 cut-off events. [2023-08-30 13:43:39,482 INFO L131 PetriNetUnfolder]: For 32639/32639 co-relation queries the response was YES. [2023-08-30 13:43:39,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10048 conditions, 1248 events. 631/1248 cut-off events. For 32639/32639 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7037 event pairs, 9 based on Foata normal form. 62/1310 useless extension candidates. Maximal degree in co-relation 9992. Up to 539 conditions per place. [2023-08-30 13:43:39,499 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 159 selfloop transitions, 303 changer transitions 0/462 dead transitions. [2023-08-30 13:43:39,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 462 transitions, 7913 flow [2023-08-30 13:43:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 13:43:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 13:43:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2890 transitions. [2023-08-30 13:43:39,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46915584415584416 [2023-08-30 13:43:39,505 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2890 transitions. [2023-08-30 13:43:39,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2890 transitions. [2023-08-30 13:43:39,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:39,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2890 transitions. [2023-08-30 13:43:39,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 82.57142857142857) internal successors, (2890), 35 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:39,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:39,520 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:39,521 INFO L175 Difference]: Start difference. First operand has 118 places, 206 transitions, 3410 flow. Second operand 35 states and 2890 transitions. [2023-08-30 13:43:39,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 462 transitions, 7913 flow [2023-08-30 13:43:39,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 462 transitions, 7300 flow, removed 268 selfloop flow, removed 10 redundant places. [2023-08-30 13:43:39,607 INFO L231 Difference]: Finished difference. Result has 159 places, 367 transitions, 6696 flow [2023-08-30 13:43:39,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6696, PETRI_PLACES=159, PETRI_TRANSITIONS=367} [2023-08-30 13:43:39,608 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 140 predicate places. [2023-08-30 13:43:39,608 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 367 transitions, 6696 flow [2023-08-30 13:43:39,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 78.66666666666667) internal successors, (1180), 15 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:39,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:39,609 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1] [2023-08-30 13:43:39,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 13:43:39,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:39,814 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:39,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1178970245, now seen corresponding path program 2 times [2023-08-30 13:43:39,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:39,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319135743] [2023-08-30 13:43:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:39,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:39,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:39,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319135743] [2023-08-30 13:43:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319135743] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:43:39,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729112045] [2023-08-30 13:43:39,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:43:39,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:39,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:43:39,945 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:43:39,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 13:43:40,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:43:40,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:43:40,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 13:43:40,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:43:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:40,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:43:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:40,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729112045] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:43:40,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:43:40,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-30 13:43:40,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909215309] [2023-08-30 13:43:40,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:43:40,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 13:43:40,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:40,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 13:43:40,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2023-08-30 13:43:40,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-30 13:43:40,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 367 transitions, 6696 flow. Second operand has 21 states, 21 states have (on average 78.47619047619048) internal successors, (1648), 21 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:40,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:40,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-30 13:43:40,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:41,647 INFO L130 PetriNetUnfolder]: 1313/2603 cut-off events. [2023-08-30 13:43:41,647 INFO L131 PetriNetUnfolder]: For 211360/211360 co-relation queries the response was YES. [2023-08-30 13:43:41,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22310 conditions, 2603 events. 1313/2603 cut-off events. For 211360/211360 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16955 event pairs, 9 based on Foata normal form. 320/2923 useless extension candidates. Maximal degree in co-relation 22236. Up to 1153 conditions per place. [2023-08-30 13:43:41,695 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 220 selfloop transitions, 690 changer transitions 0/910 dead transitions. [2023-08-30 13:43:41,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 910 transitions, 16801 flow [2023-08-30 13:43:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-08-30 13:43:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-08-30 13:43:41,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 5541 transitions. [2023-08-30 13:43:41,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46989484396200815 [2023-08-30 13:43:41,705 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 5541 transitions. [2023-08-30 13:43:41,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 5541 transitions. [2023-08-30 13:43:41,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:41,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 5541 transitions. [2023-08-30 13:43:41,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 82.70149253731343) internal successors, (5541), 67 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:41,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 176.0) internal successors, (11968), 68 states have internal predecessors, (11968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:41,738 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 176.0) internal successors, (11968), 68 states have internal predecessors, (11968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:41,739 INFO L175 Difference]: Start difference. First operand has 159 places, 367 transitions, 6696 flow. Second operand 67 states and 5541 transitions. [2023-08-30 13:43:41,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 910 transitions, 16801 flow [2023-08-30 13:43:41,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 910 transitions, 16303 flow, removed 232 selfloop flow, removed 10 redundant places. [2023-08-30 13:43:41,989 INFO L231 Difference]: Finished difference. Result has 243 places, 755 transitions, 15726 flow [2023-08-30 13:43:41,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=6478, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=15726, PETRI_PLACES=243, PETRI_TRANSITIONS=755} [2023-08-30 13:43:41,990 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 224 predicate places. [2023-08-30 13:43:41,990 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 755 transitions, 15726 flow [2023-08-30 13:43:41,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 78.47619047619048) internal successors, (1648), 21 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:41,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:41,991 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:43:41,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 13:43:42,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 13:43:42,197 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:42,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:42,197 INFO L85 PathProgramCache]: Analyzing trace with hash 45611997, now seen corresponding path program 3 times [2023-08-30 13:43:42,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:42,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454886937] [2023-08-30 13:43:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:42,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:42,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:42,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454886937] [2023-08-30 13:43:42,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454886937] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:43:42,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510092437] [2023-08-30 13:43:42,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 13:43:42,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:42,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:43:42,361 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:43:42,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 13:43:42,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 13:43:42,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:43:42,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 13:43:42,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:43:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:42,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:43:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:42,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510092437] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:43:42,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:43:42,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2023-08-30 13:43:42,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831655230] [2023-08-30 13:43:42,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:43:42,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 13:43:42,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:42,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 13:43:42,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=456, Unknown=0, NotChecked=0, Total=812 [2023-08-30 13:43:42,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 176 [2023-08-30 13:43:42,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 755 transitions, 15726 flow. Second operand has 29 states, 29 states have (on average 79.34482758620689) internal successors, (2301), 29 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:42,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:42,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 176 [2023-08-30 13:43:42,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:45,302 INFO L130 PetriNetUnfolder]: 2749/5472 cut-off events. [2023-08-30 13:43:45,302 INFO L131 PetriNetUnfolder]: For 1134551/1134551 co-relation queries the response was YES. [2023-08-30 13:43:45,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52350 conditions, 5472 events. 2749/5472 cut-off events. For 1134551/1134551 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 38510 event pairs, 125 based on Foata normal form. 571/6043 useless extension candidates. Maximal degree in co-relation 52249. Up to 2519 conditions per place. [2023-08-30 13:43:45,379 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 361 selfloop transitions, 1479 changer transitions 0/1840 dead transitions. [2023-08-30 13:43:45,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 1840 transitions, 40057 flow [2023-08-30 13:43:45,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-08-30 13:43:45,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-08-30 13:43:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 5663 transitions. [2023-08-30 13:43:45,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731784759358289 [2023-08-30 13:43:45,387 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 5663 transitions. [2023-08-30 13:43:45,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 5663 transitions. [2023-08-30 13:43:45,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:45,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 5663 transitions. [2023-08-30 13:43:45,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 83.27941176470588) internal successors, (5663), 68 states have internal predecessors, (5663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:45,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 176.0) internal successors, (12144), 69 states have internal predecessors, (12144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:45,410 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 176.0) internal successors, (12144), 69 states have internal predecessors, (12144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:45,410 INFO L175 Difference]: Start difference. First operand has 243 places, 755 transitions, 15726 flow. Second operand 68 states and 5663 transitions. [2023-08-30 13:43:45,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 1840 transitions, 40057 flow [2023-08-30 13:43:46,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1840 transitions, 34895 flow, removed 2394 selfloop flow, removed 22 redundant places. [2023-08-30 13:43:46,455 INFO L231 Difference]: Finished difference. Result has 327 places, 1709 transitions, 35900 flow [2023-08-30 13:43:46,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=14046, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=627, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=35900, PETRI_PLACES=327, PETRI_TRANSITIONS=1709} [2023-08-30 13:43:46,456 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 308 predicate places. [2023-08-30 13:43:46,456 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 1709 transitions, 35900 flow [2023-08-30 13:43:46,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 79.34482758620689) internal successors, (2301), 29 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:46,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:43:46,457 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 13:43:46,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 13:43:46,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 13:43:46,663 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:43:46,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:43:46,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1240625739, now seen corresponding path program 4 times [2023-08-30 13:43:46,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:43:46,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968984526] [2023-08-30 13:43:46,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:43:46,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:43:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:43:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:46,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:43:46,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968984526] [2023-08-30 13:43:46,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968984526] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:43:46,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121056913] [2023-08-30 13:43:46,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 13:43:46,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:43:46,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:43:46,876 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:43:46,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 13:43:46,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 13:43:46,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:43:46,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 13:43:46,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:43:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:46,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:43:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:43:47,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121056913] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:43:47,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:43:47,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2023-08-30 13:43:47,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110706665] [2023-08-30 13:43:47,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:43:47,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 13:43:47,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:43:47,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 13:43:47,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=532, Unknown=0, NotChecked=0, Total=812 [2023-08-30 13:43:47,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 176 [2023-08-30 13:43:47,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 1709 transitions, 35900 flow. Second operand has 29 states, 29 states have (on average 79.34482758620689) internal successors, (2301), 29 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:47,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:43:47,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 176 [2023-08-30 13:43:47,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:43:54,511 INFO L130 PetriNetUnfolder]: 5609/11182 cut-off events. [2023-08-30 13:43:54,511 INFO L131 PetriNetUnfolder]: For 3693663/3693663 co-relation queries the response was YES. [2023-08-30 13:43:54,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112179 conditions, 11182 events. 5609/11182 cut-off events. For 3693663/3693663 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 90961 event pairs, 48 based on Foata normal form. 793/11975 useless extension candidates. Maximal degree in co-relation 112038. Up to 5195 conditions per place. [2023-08-30 13:43:54,727 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 582 selfloop transitions, 3439 changer transitions 0/4021 dead transitions. [2023-08-30 13:43:54,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 4021 transitions, 87098 flow [2023-08-30 13:43:54,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-08-30 13:43:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2023-08-30 13:43:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 8692 transitions. [2023-08-30 13:43:54,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748688811188811 [2023-08-30 13:43:54,737 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 8692 transitions. [2023-08-30 13:43:54,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 8692 transitions. [2023-08-30 13:43:54,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:43:54,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 8692 transitions. [2023-08-30 13:43:54,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 83.57692307692308) internal successors, (8692), 104 states have internal predecessors, (8692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:54,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 176.0) internal successors, (18480), 105 states have internal predecessors, (18480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:54,785 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 176.0) internal successors, (18480), 105 states have internal predecessors, (18480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:43:54,786 INFO L175 Difference]: Start difference. First operand has 327 places, 1709 transitions, 35900 flow. Second operand 104 states and 8692 transitions. [2023-08-30 13:43:54,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 4021 transitions, 87098 flow [2023-08-30 13:44:00,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 4021 transitions, 80138 flow, removed 2330 selfloop flow, removed 23 redundant places. [2023-08-30 13:44:00,769 INFO L231 Difference]: Finished difference. Result has 458 places, 3760 transitions, 81692 flow [2023-08-30 13:44:00,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=32838, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=81692, PETRI_PLACES=458, PETRI_TRANSITIONS=3760} [2023-08-30 13:44:00,771 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 439 predicate places. [2023-08-30 13:44:00,771 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 3760 transitions, 81692 flow [2023-08-30 13:44:00,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 79.34482758620689) internal successors, (2301), 29 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:44:00,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:44:00,772 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 13:44:00,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 13:44:00,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 13:44:00,973 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:44:00,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:44:00,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1386268361, now seen corresponding path program 5 times [2023-08-30 13:44:00,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:44:00,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84110599] [2023-08-30 13:44:00,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:44:00,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:44:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:44:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:44:01,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:44:01,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84110599] [2023-08-30 13:44:01,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84110599] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:44:01,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948397227] [2023-08-30 13:44:01,176 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 13:44:01,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:44:01,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:44:01,177 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:44:01,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 13:44:01,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-30 13:44:01,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:44:01,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 13:44:01,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:44:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:44:01,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:44:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:44:01,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948397227] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:44:01,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:44:01,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2023-08-30 13:44:01,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36172850] [2023-08-30 13:44:01,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:44:01,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 13:44:01,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:44:01,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 13:44:01,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=603, Unknown=0, NotChecked=0, Total=930 [2023-08-30 13:44:01,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 176 [2023-08-30 13:44:01,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 3760 transitions, 81692 flow. Second operand has 31 states, 31 states have (on average 79.3225806451613) internal successors, (2459), 31 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:44:01,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:44:01,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 176 [2023-08-30 13:44:01,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:44:25,095 INFO L130 PetriNetUnfolder]: 10529/21014 cut-off events. [2023-08-30 13:44:25,095 INFO L131 PetriNetUnfolder]: For 15420732/15420732 co-relation queries the response was YES. [2023-08-30 13:44:25,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224715 conditions, 21014 events. 10529/21014 cut-off events. For 15420732/15420732 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 191137 event pairs, 75 based on Foata normal form. 1809/22823 useless extension candidates. Maximal degree in co-relation 224525. Up to 9861 conditions per place. [2023-08-30 13:44:25,686 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 742 selfloop transitions, 6525 changer transitions 0/7267 dead transitions. [2023-08-30 13:44:25,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 7267 transitions, 167991 flow [2023-08-30 13:44:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2023-08-30 13:44:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2023-08-30 13:44:25,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 10290 transitions. [2023-08-30 13:44:25,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47533259423503327 [2023-08-30 13:44:25,698 INFO L72 ComplementDD]: Start complementDD. Operand 123 states and 10290 transitions. [2023-08-30 13:44:25,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 10290 transitions. [2023-08-30 13:44:25,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:44:25,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 123 states and 10290 transitions. [2023-08-30 13:44:25,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 124 states, 123 states have (on average 83.65853658536585) internal successors, (10290), 123 states have internal predecessors, (10290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:44:25,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 124 states, 124 states have (on average 176.0) internal successors, (21824), 124 states have internal predecessors, (21824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:44:25,737 INFO L81 ComplementDD]: Finished complementDD. Result has 124 states, 124 states have (on average 176.0) internal successors, (21824), 124 states have internal predecessors, (21824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:44:25,738 INFO L175 Difference]: Start difference. First operand has 458 places, 3760 transitions, 81692 flow. Second operand 123 states and 10290 transitions. [2023-08-30 13:44:25,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 7267 transitions, 167991 flow [2023-08-30 13:44:48,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 7267 transitions, 160746 flow, removed 3501 selfloop flow, removed 21 redundant places. [2023-08-30 13:44:48,434 INFO L231 Difference]: Finished difference. Result has 621 places, 6976 transitions, 166883 flow [2023-08-30 13:44:48,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=78826, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3535, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=123, PETRI_FLOW=166883, PETRI_PLACES=621, PETRI_TRANSITIONS=6976} [2023-08-30 13:44:48,438 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 602 predicate places. [2023-08-30 13:44:48,438 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 6976 transitions, 166883 flow [2023-08-30 13:44:48,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 79.3225806451613) internal successors, (2459), 31 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:44:48,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:44:48,439 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1] [2023-08-30 13:44:48,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 13:44:48,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 13:44:48,644 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:44:48,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:44:48,645 INFO L85 PathProgramCache]: Analyzing trace with hash -608310218, now seen corresponding path program 2 times [2023-08-30 13:44:48,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:44:48,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951660450] [2023-08-30 13:44:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:44:48,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:44:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:44:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:44:48,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:44:48,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951660450] [2023-08-30 13:44:48,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951660450] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:44:48,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854381602] [2023-08-30 13:44:48,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:44:48,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:44:48,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:44:48,816 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:44:48,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 13:44:48,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:44:48,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:44:48,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 13:44:48,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:44:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:44:48,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:44:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:44:49,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854381602] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:44:49,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:44:49,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-08-30 13:44:49,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070554559] [2023-08-30 13:44:49,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:44:49,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-30 13:44:49,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:44:49,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-30 13:44:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=766, Unknown=0, NotChecked=0, Total=1056 [2023-08-30 13:44:49,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 176 [2023-08-30 13:44:49,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 6976 transitions, 166883 flow. Second operand has 33 states, 33 states have (on average 78.21212121212122) internal successors, (2581), 33 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:44:49,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:44:49,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 176 [2023-08-30 13:44:49,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:46:44,574 INFO L130 PetriNetUnfolder]: 21662/43241 cut-off events. [2023-08-30 13:46:44,575 INFO L131 PetriNetUnfolder]: For 24666319/24666319 co-relation queries the response was YES. [2023-08-30 13:46:47,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546171 conditions, 43241 events. 21662/43241 cut-off events. For 24666319/24666319 co-relation queries the response was YES. Maximal size of possible extension queue 2056. Compared 444772 event pairs, 65 based on Foata normal form. 749/43990 useless extension candidates. Maximal degree in co-relation 545919. Up to 20141 conditions per place. [2023-08-30 13:46:47,774 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 2882 selfloop transitions, 12196 changer transitions 0/15078 dead transitions. [2023-08-30 13:46:47,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 779 places, 15078 transitions, 381591 flow [2023-08-30 13:46:47,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2023-08-30 13:46:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2023-08-30 13:46:47,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 13151 transitions. [2023-08-30 13:46:47,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46994711263579186 [2023-08-30 13:46:47,789 INFO L72 ComplementDD]: Start complementDD. Operand 159 states and 13151 transitions. [2023-08-30 13:46:47,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 13151 transitions. [2023-08-30 13:46:47,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:46:47,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 159 states and 13151 transitions. [2023-08-30 13:46:47,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 160 states, 159 states have (on average 82.71069182389937) internal successors, (13151), 159 states have internal predecessors, (13151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:47,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 160 states, 160 states have (on average 176.0) internal successors, (28160), 160 states have internal predecessors, (28160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:47,837 INFO L81 ComplementDD]: Finished complementDD. Result has 160 states, 160 states have (on average 176.0) internal successors, (28160), 160 states have internal predecessors, (28160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:47,837 INFO L175 Difference]: Start difference. First operand has 621 places, 6976 transitions, 166883 flow. Second operand 159 states and 13151 transitions. [2023-08-30 13:46:47,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 779 places, 15078 transitions, 381591 flow [2023-08-30 13:49:18,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 748 places, 15078 transitions, 367076 flow, removed 7141 selfloop flow, removed 31 redundant places. [2023-08-30 13:49:18,983 INFO L231 Difference]: Finished difference. Result has 802 places, 13866 transitions, 355420 flow [2023-08-30 13:49:18,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=161494, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6976, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5743, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=974, PETRI_DIFFERENCE_SUBTRAHEND_STATES=159, PETRI_FLOW=355420, PETRI_PLACES=802, PETRI_TRANSITIONS=13866} [2023-08-30 13:49:18,989 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 783 predicate places. [2023-08-30 13:49:18,989 INFO L495 AbstractCegarLoop]: Abstraction has has 802 places, 13866 transitions, 355420 flow [2023-08-30 13:49:18,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 78.21212121212122) internal successors, (2581), 33 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:18,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:49:18,990 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 13:49:18,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 13:49:19,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 13:49:19,195 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 13:49:19,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:49:19,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1178120843, now seen corresponding path program 6 times [2023-08-30 13:49:19,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:49:19,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30315678] [2023-08-30 13:49:19,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:49:19,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:49:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:49:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:49:19,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:49:19,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30315678] [2023-08-30 13:49:19,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30315678] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:49:19,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527562585] [2023-08-30 13:49:19,513 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 13:49:19,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:49:19,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:49:19,514 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:49:19,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 13:49:19,594 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-08-30 13:49:19,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:49:19,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 13:49:19,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:49:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:49:19,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:49:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:49:19,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527562585] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:49:19,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:49:19,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2023-08-30 13:49:19,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876241300] [2023-08-30 13:49:19,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:49:19,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-30 13:49:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:49:19,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-30 13:49:19,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1018, Unknown=0, NotChecked=0, Total=1640 [2023-08-30 13:49:20,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 176 [2023-08-30 13:49:20,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 802 places, 13866 transitions, 355420 flow. Second operand has 41 states, 41 states have (on average 79.2439024390244) internal successors, (3249), 41 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:49:20,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:49:20,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 176 [2023-08-30 13:49:20,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15