./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a Calling Ultimate with: /root/.sdkman/candidates/java/current/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/goblint-regression/28-race_reach_60-invariant_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:18:23,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:18:23,798 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:18:23,802 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:18:23,803 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:18:23,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:18:23,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:18:23,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:18:23,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:18:23,844 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:18:23,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:18:23,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:18:23,845 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:18:23,845 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:18:23,845 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:18:23,846 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:18:23,846 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:18:23,846 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:18:23,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:18:23,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:18:23,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:18:23,847 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:18:23,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:18:23,849 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:18:23,849 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:18:23,849 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:18:23,849 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:18:23,849 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:18:23,850 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:18:23,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:18:23,851 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:18:23,851 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:18:23,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:18:23,852 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:18:23,852 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:18:23,852 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:18:23,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:18:23,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:18:23,853 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:18:23,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:18:23,854 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:18:23,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:18:23,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:18:23,854 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:18:24,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:18:24,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:18:24,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:18:24,176 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:18:24,177 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:18:24,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2024-02-19 14:18:25,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:18:25,544 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:18:25,548 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2024-02-19 14:18:25,568 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db626a691/c645639d4a8f4f489265520b1fb2aa98/FLAG5691765f9 [2024-02-19 14:18:25,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db626a691/c645639d4a8f4f489265520b1fb2aa98 [2024-02-19 14:18:25,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:18:25,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:18:25,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:18:25,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:18:25,594 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:18:25,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:18:25" (1/1) ... [2024-02-19 14:18:25,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444bc146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:25, skipping insertion in model container [2024-02-19 14:18:25,596 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:18:25" (1/1) ... [2024-02-19 14:18:25,634 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:18:25,920 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2024-02-19 14:18:25,945 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:18:25,959 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:18:25,994 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2024-02-19 14:18:26,013 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:18:26,050 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:18:26,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26 WrapperNode [2024-02-19 14:18:26,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:18:26,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:18:26,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:18:26,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:18:26,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26" (1/1) ... [2024-02-19 14:18:26,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26" (1/1) ... [2024-02-19 14:18:26,098 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 165 [2024-02-19 14:18:26,099 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:18:26,099 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:18:26,100 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:18:26,100 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:18:26,109 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26" (1/1) ... [2024-02-19 14:18:26,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26" (1/1) ... [2024-02-19 14:18:26,126 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26" (1/1) ... [2024-02-19 14:18:26,146 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-02-19 14:18:26,146 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26" (1/1) ... [2024-02-19 14:18:26,146 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26" (1/1) ... [2024-02-19 14:18:26,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26" (1/1) ... [2024-02-19 14:18:26,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26" (1/1) ... [2024-02-19 14:18:26,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26" (1/1) ... [2024-02-19 14:18:26,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26" (1/1) ... [2024-02-19 14:18:26,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:18:26,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:18:26,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:18:26,180 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:18:26,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26" (1/1) ... [2024-02-19 14:18:26,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:18:26,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:18:26,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-19 14:18:26,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-19 14:18:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:18:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:18:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:18:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:18:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:18:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:18:26,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:18:26,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:18:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-19 14:18:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:18:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:18:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-19 14:18:26,305 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-19 14:18:26,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:18:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:18:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:18:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:18:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:18:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-19 14:18:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:18:26,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:18:26,308 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:18:26,409 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:18:26,410 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:18:26,667 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:18:26,667 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:18:26,805 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:18:26,805 INFO L320 CfgBuilder]: Removed 18 assume(true) statements. [2024-02-19 14:18:26,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:18:26 BoogieIcfgContainer [2024-02-19 14:18:26,806 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:18:26,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:18:26,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:18:26,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:18:26,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:18:25" (1/3) ... [2024-02-19 14:18:26,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ef610d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:18:26, skipping insertion in model container [2024-02-19 14:18:26,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:26" (2/3) ... [2024-02-19 14:18:26,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ef610d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:18:26, skipping insertion in model container [2024-02-19 14:18:26,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:18:26" (3/3) ... [2024-02-19 14:18:26,814 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2024-02-19 14:18:26,827 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:18:26,827 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-02-19 14:18:26,828 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:18:26,854 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-19 14:18:26,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 84 transitions, 175 flow [2024-02-19 14:18:26,936 INFO L124 PetriNetUnfolderBase]: 29/122 cut-off events. [2024-02-19 14:18:26,937 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-19 14:18:26,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 122 events. 29/122 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 506 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 79. Up to 6 conditions per place. [2024-02-19 14:18:26,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 84 transitions, 175 flow [2024-02-19 14:18:26,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 82 transitions, 168 flow [2024-02-19 14:18:26,951 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:18:26,956 INFO L369 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=All, 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;@6ea2c086, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:18:26,956 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-19 14:18:26,961 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:18:26,961 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-02-19 14:18:26,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-19 14:18:26,961 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:18:26,962 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-19 14:18:26,962 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-02-19 14:18:26,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:18:26,966 INFO L85 PathProgramCache]: Analyzing trace with hash -11511521, now seen corresponding path program 1 times [2024-02-19 14:18:26,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:18:26,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798814703] [2024-02-19 14:18:26,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:18:26,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:18:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-19 14:18:27,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-19 14:18:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-19 14:18:27,138 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-19 14:18:27,140 INFO L372 BasicCegarLoop]: Counterexample is feasible [2024-02-19 14:18:27,141 INFO L818 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-02-19 14:18:27,143 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-02-19 14:18:27,144 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-02-19 14:18:27,144 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-02-19 14:18:27,144 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:18:27,145 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2024-02-19 14:18:27,155 WARN L345 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-19 14:18:27,155 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-19 14:18:27,192 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-19 14:18:27,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 126 transitions, 268 flow [2024-02-19 14:18:27,219 INFO L124 PetriNetUnfolderBase]: 50/209 cut-off events. [2024-02-19 14:18:27,220 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-19 14:18:27,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 209 events. 50/209 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1016 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 126. Up to 9 conditions per place. [2024-02-19 14:18:27,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 126 transitions, 268 flow [2024-02-19 14:18:27,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 126 transitions, 268 flow [2024-02-19 14:18:27,225 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:18:27,226 INFO L369 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=All, 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;@6ea2c086, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:18:27,226 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-19 14:18:27,232 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:18:27,232 INFO L124 PetriNetUnfolderBase]: 4/50 cut-off events. [2024-02-19 14:18:27,233 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-19 14:18:27,233 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:18:27,233 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-02-19 14:18:27,233 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-02-19 14:18:27,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:18:27,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1833359794, now seen corresponding path program 1 times [2024-02-19 14:18:27,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:18:27,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562649950] [2024-02-19 14:18:27,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:18:27,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:18:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-19 14:18:27,253 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-19 14:18:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-19 14:18:27,268 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-19 14:18:27,269 INFO L372 BasicCegarLoop]: Counterexample is feasible [2024-02-19 14:18:27,269 INFO L818 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-02-19 14:18:27,269 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-02-19 14:18:27,269 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-02-19 14:18:27,269 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-02-19 14:18:27,270 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-02-19 14:18:27,270 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:18:27,270 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2024-02-19 14:18:27,271 WARN L345 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-19 14:18:27,271 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-19 14:18:27,292 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-19 14:18:27,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 168 transitions, 363 flow [2024-02-19 14:18:27,333 INFO L124 PetriNetUnfolderBase]: 74/307 cut-off events. [2024-02-19 14:18:27,334 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-02-19 14:18:27,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 307 events. 74/307 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1609 event pairs, 1 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 220. Up to 12 conditions per place. [2024-02-19 14:18:27,338 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 168 transitions, 363 flow [2024-02-19 14:18:27,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 168 transitions, 363 flow [2024-02-19 14:18:27,342 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:18:27,343 INFO L369 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=All, 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;@6ea2c086, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:18:27,343 INFO L370 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-02-19 14:18:27,348 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:18:27,348 INFO L124 PetriNetUnfolderBase]: 4/59 cut-off events. [2024-02-19 14:18:27,348 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-19 14:18:27,348 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:18:27,348 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:18:27,349 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-02-19 14:18:27,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:18:27,349 INFO L85 PathProgramCache]: Analyzing trace with hash 366046279, now seen corresponding path program 1 times [2024-02-19 14:18:27,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:18:27,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951566421] [2024-02-19 14:18:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:18:27,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:18:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:18:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:18:27,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:18:27,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951566421] [2024-02-19 14:18:27,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951566421] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:18:27,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:18:27,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:18:27,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402095625] [2024-02-19 14:18:27,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:18:27,512 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:18:27,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:18:27,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:18:27,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:18:27,544 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 168 [2024-02-19 14:18:27,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 168 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:18:27,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:18:27,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 168 [2024-02-19 14:18:27,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:18:54,642 INFO L124 PetriNetUnfolderBase]: 202308/336395 cut-off events. [2024-02-19 14:18:54,642 INFO L125 PetriNetUnfolderBase]: For 2453/2453 co-relation queries the response was YES. [2024-02-19 14:18:55,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607767 conditions, 336395 events. 202308/336395 cut-off events. For 2453/2453 co-relation queries the response was YES. Maximal size of possible extension queue 7738. Compared 3579589 event pairs, 183676 based on Foata normal form. 100892/417418 useless extension candidates. Maximal degree in co-relation 91054. Up to 269636 conditions per place. [2024-02-19 14:18:57,122 INFO L140 encePairwiseOnDemand]: 129/168 looper letters, 82 selfloop transitions, 2 changer transitions 0/148 dead transitions. [2024-02-19 14:18:57,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 148 transitions, 491 flow [2024-02-19 14:18:57,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:18:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:18:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2024-02-19 14:18:57,133 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-02-19 14:18:57,136 INFO L308 CegarLoopForPetriNet]: 133 programPoint places, 2 predicate places. [2024-02-19 14:18:57,136 INFO L507 AbstractCegarLoop]: Abstraction has has 135 places, 148 transitions, 491 flow [2024-02-19 14:18:57,136 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:18:57,136 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:18:57,137 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:18:57,137 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 14:18:57,137 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-02-19 14:18:57,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:18:57,138 INFO L85 PathProgramCache]: Analyzing trace with hash 883111982, now seen corresponding path program 1 times [2024-02-19 14:18:57,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:18:57,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11727064] [2024-02-19 14:18:57,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:18:57,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:18:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:18:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:18:57,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:18:57,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11727064] [2024-02-19 14:18:57,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11727064] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:18:57,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:18:57,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:18:57,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163809974] [2024-02-19 14:18:57,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:18:57,212 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:18:57,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:18:57,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:18:57,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:18:57,221 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 168 [2024-02-19 14:18:57,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 148 transitions, 491 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:18:57,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:18:57,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 168 [2024-02-19 14:18:57,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand