./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_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_91-arrayloop2_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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --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 14:18:53,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:18:53,990 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:18:53,998 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:18:53,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:18:54,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:18:54,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:18:54,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:18:54,036 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:18:54,039 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:18:54,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:18:54,039 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:18:54,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:18:54,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:18:54,041 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:18:54,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:18:54,041 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:18:54,042 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:18:54,042 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:18:54,042 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:18:54,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:18:54,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:18:54,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:18:54,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:18:54,044 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:18:54,045 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:18:54,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:18:54,045 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:18:54,046 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:18:54,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:18:54,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:18:54,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:18:54,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:18:54,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:18:54,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:18:54,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:18:54,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:18:54,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:18:54,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:18:54,049 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:18:54,049 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:18:54,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:18:54,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:18:54,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:18:54,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:18:54,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:18:54,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:18:54,359 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:18:54,360 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:18:54,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-02-19 14:18:55,690 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:18:55,901 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:18:55,901 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-02-19 14:18:55,914 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8070cd9f5/a86dff8e1d904108a38ffefd324eb8cf/FLAGbf9cc8fd2 [2024-02-19 14:18:55,925 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8070cd9f5/a86dff8e1d904108a38ffefd324eb8cf [2024-02-19 14:18:55,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:18:55,929 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:18:55,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:18:55,930 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:18:55,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:18:55,935 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:18:55" (1/1) ... [2024-02-19 14:18:55,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0bd1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:55, skipping insertion in model container [2024-02-19 14:18:55,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:18:55" (1/1) ... [2024-02-19 14:18:55,974 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:18:56,339 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_91-arrayloop2_racefree.i[47038,47051] [2024-02-19 14:18:56,357 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:18:56,358 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:18:56,358 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:18:56,359 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:18:56,405 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:18:56,435 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:18:56,458 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_91-arrayloop2_racefree.i[47038,47051] [2024-02-19 14:18:56,461 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:18:56,461 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:18:56,461 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:18:56,461 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:18:56,468 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:18:56,524 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:18:56,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56 WrapperNode [2024-02-19 14:18:56,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:18:56,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:18:56,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:18:56,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:18:56,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56" (1/1) ... [2024-02-19 14:18:56,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56" (1/1) ... [2024-02-19 14:18:56,583 INFO L138 Inliner]: procedures = 278, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 195 [2024-02-19 14:18:56,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:18:56,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:18:56,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:18:56,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:18:56,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56" (1/1) ... [2024-02-19 14:18:56,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56" (1/1) ... [2024-02-19 14:18:56,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56" (1/1) ... [2024-02-19 14:18:56,627 INFO L175 MemorySlicer]: Split 28 memory accesses to 4 slices as follows [2, 19, 2, 5]. 68 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 0, 5]. The 14 writes are split as follows [0, 13, 1, 0]. [2024-02-19 14:18:56,629 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56" (1/1) ... [2024-02-19 14:18:56,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56" (1/1) ... [2024-02-19 14:18:56,640 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56" (1/1) ... [2024-02-19 14:18:56,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56" (1/1) ... [2024-02-19 14:18:56,653 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56" (1/1) ... [2024-02-19 14:18:56,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56" (1/1) ... [2024-02-19 14:18:56,664 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:18:56,665 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:18:56,665 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:18:56,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:18:56,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56" (1/1) ... [2024-02-19 14:18:56,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:18:56,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:18:56,689 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 14:18:56,705 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 14:18:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:18:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-19 14:18:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-19 14:18:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-19 14:18:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-19 14:18:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:18:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-19 14:18:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:18:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:18:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:18:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:18:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:18:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:18:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:18:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:18:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-19 14:18:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 14:18:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:18:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-19 14:18:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-19 14:18:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-19 14:18:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-19 14:18:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-19 14:18:56,730 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-19 14:18:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:18:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:18:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:18:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:18:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:18:56,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:18:56,731 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 14:18:56,885 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:18:56,886 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:18:57,145 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:18:57,145 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:18:57,332 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:18:57,332 INFO L320 CfgBuilder]: Removed 16 assume(true) statements. [2024-02-19 14:18:57,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:18:57 BoogieIcfgContainer [2024-02-19 14:18:57,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:18:57,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:18:57,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:18:57,336 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:18:57,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:18:55" (1/3) ... [2024-02-19 14:18:57,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba60491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:18:57, skipping insertion in model container [2024-02-19 14:18:57,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:18:56" (2/3) ... [2024-02-19 14:18:57,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba60491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:18:57, skipping insertion in model container [2024-02-19 14:18:57,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:18:57" (3/3) ... [2024-02-19 14:18:57,339 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2024-02-19 14:18:57,353 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:18:57,353 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:18:57,353 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:18:57,402 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-19 14:18:57,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 60 transitions, 127 flow [2024-02-19 14:18:57,451 INFO L124 PetriNetUnfolderBase]: 17/64 cut-off events. [2024-02-19 14:18:57,451 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-19 14:18:57,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 17/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-02-19 14:18:57,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 60 transitions, 127 flow [2024-02-19 14:18:57,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 58 transitions, 120 flow [2024-02-19 14:18:57,464 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:18:57,469 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;@1d234306, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:18:57,470 INFO L370 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-02-19 14:18:57,476 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:18:57,476 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-02-19 14:18:57,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-19 14:18:57,477 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:18:57,477 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-19 14:18:57,478 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-19 14:18:57,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:18:57,482 INFO L85 PathProgramCache]: Analyzing trace with hash 324870064, now seen corresponding path program 1 times [2024-02-19 14:18:57,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:18:57,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978230081] [2024-02-19 14:18:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:18:57,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:18:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:18:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:18:57,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:18:57,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978230081] [2024-02-19 14:18:57,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978230081] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:18:57,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:18:57,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:18:57,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150503913] [2024-02-19 14:18:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:18:57,756 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:18:57,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:18:57,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:18:57,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:18:57,784 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-19 14:18:57,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 14:18:57,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:18:57,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-19 14:18:57,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:18:58,007 INFO L124 PetriNetUnfolderBase]: 116/321 cut-off events. [2024-02-19 14:18:58,008 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-19 14:18:58,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 321 events. 116/321 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1308 event pairs, 95 based on Foata normal form. 42/305 useless extension candidates. Maximal degree in co-relation 531. Up to 237 conditions per place. [2024-02-19 14:18:58,012 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-02-19 14:18:58,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 174 flow [2024-02-19 14:18:58,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:18:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:18:58,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-02-19 14:18:58,022 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-02-19 14:18:58,025 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-02-19 14:18:58,025 INFO L507 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 174 flow [2024-02-19 14:18:58,025 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 14:18:58,025 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:18:58,025 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:18:58,026 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:18:58,026 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-19 14:18:58,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:18:58,026 INFO L85 PathProgramCache]: Analyzing trace with hash 521651503, now seen corresponding path program 1 times [2024-02-19 14:18:58,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:18:58,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309966932] [2024-02-19 14:18:58,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:18:58,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:18:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:18:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:18:58,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:18:58,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309966932] [2024-02-19 14:18:58,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309966932] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:18:58,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:18:58,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:18:58,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043716997] [2024-02-19 14:18:58,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:18:58,093 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:18:58,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:18:58,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:18:58,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:18:58,094 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-19 14:18:58,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:18:58,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:18:58,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-19 14:18:58,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:18:58,228 INFO L124 PetriNetUnfolderBase]: 116/323 cut-off events. [2024-02-19 14:18:58,228 INFO L125 PetriNetUnfolderBase]: For 32/34 co-relation queries the response was YES. [2024-02-19 14:18:58,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 323 events. 116/323 cut-off events. For 32/34 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1315 event pairs, 95 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 757. Up to 240 conditions per place. [2024-02-19 14:18:58,230 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 33 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-02-19 14:18:58,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 256 flow [2024-02-19 14:18:58,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:18:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:18:58,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-02-19 14:18:58,232 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-02-19 14:18:58,248 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-02-19 14:18:58,249 INFO L507 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 256 flow [2024-02-19 14:18:58,249 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 14:18:58,249 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:18:58,249 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:18:58,249 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:18:58,250 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-19 14:18:58,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:18:58,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1008072150, now seen corresponding path program 1 times [2024-02-19 14:18:58,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:18:58,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155919377] [2024-02-19 14:18:58,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:18:58,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:18:58,311 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-19 14:18:58,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960800033] [2024-02-19 14:18:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:18:58,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:18:58,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:18:58,314 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) [2024-02-19 14:18:58,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-19 14:18:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:18:58,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-19 14:18:58,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:18:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:18:58,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:18:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:18:58,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:18:58,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155919377] [2024-02-19 14:18:58,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-19 14:18:58,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960800033] [2024-02-19 14:18:58,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960800033] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:18:58,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:18:58,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-02-19 14:18:58,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354176290] [2024-02-19 14:18:58,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-19 14:18:58,495 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:18:58,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:18:58,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:18:58,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-19 14:18:58,496 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-19 14:18:58,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 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 14:18:58,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:18:58,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-19 14:18:58,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:18:58,883 INFO L124 PetriNetUnfolderBase]: 116/332 cut-off events. [2024-02-19 14:18:58,883 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-02-19 14:18:58,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 332 events. 116/332 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1309 event pairs, 95 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 988. Up to 246 conditions per place. [2024-02-19 14:18:58,888 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 33 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2024-02-19 14:18:58,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 378 flow [2024-02-19 14:18:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:18:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:18:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-02-19 14:18:58,893 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-02-19 14:18:58,894 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-02-19 14:18:58,895 INFO L507 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 378 flow [2024-02-19 14:18:58,895 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 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 14:18:58,895 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:18:58,895 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:18:58,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-19 14:18:59,108 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:18:59,109 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-19 14:18:59,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:18:59,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2056112401, now seen corresponding path program 2 times [2024-02-19 14:18:59,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:18:59,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084350046] [2024-02-19 14:18:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:18:59,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:18:59,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-19 14:18:59,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534104885] [2024-02-19 14:18:59,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:18:59,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:18:59,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:18:59,214 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) [2024-02-19 14:18:59,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-19 14:18:59,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:18:59,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:18:59,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-19 14:18:59,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:18:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:18:59,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:18:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:18:59,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:18:59,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084350046] [2024-02-19 14:18:59,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-19 14:18:59,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534104885] [2024-02-19 14:18:59,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534104885] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:18:59,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:18:59,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-02-19 14:18:59,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632399297] [2024-02-19 14:18:59,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-19 14:18:59,561 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-19 14:18:59,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:18:59,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-19 14:18:59,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-02-19 14:18:59,562 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-19 14:18:59,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 58 transitions, 378 flow. Second operand has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 0 states have call successors, (0), 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 14:18:59,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:18:59,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-19 14:18:59,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:00,279 INFO L124 PetriNetUnfolderBase]: 116/341 cut-off events. [2024-02-19 14:19:00,279 INFO L125 PetriNetUnfolderBase]: For 192/198 co-relation queries the response was YES. [2024-02-19 14:19:00,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 341 events. 116/341 cut-off events. For 192/198 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1377 event pairs, 95 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 1209. Up to 258 conditions per place. [2024-02-19 14:19:00,281 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 33 selfloop transitions, 22 changer transitions 0/70 dead transitions. [2024-02-19 14:19:00,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 584 flow [2024-02-19 14:19:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-19 14:19:00,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-19 14:19:00,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-02-19 14:19:00,283 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-02-19 14:19:00,284 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-02-19 14:19:00,284 INFO L507 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 584 flow [2024-02-19 14:19:00,284 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 0 states have call successors, (0), 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 14:19:00,284 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:00,285 INFO L234 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:19:00,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-02-19 14:19:00,497 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-19 14:19:00,497 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-19 14:19:00,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:00,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1113487, now seen corresponding path program 3 times [2024-02-19 14:19:00,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:00,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048478606] [2024-02-19 14:19:00,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:00,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:00,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-19 14:19:00,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057207697] [2024-02-19 14:19:00,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:19:00,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:00,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:00,633 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) [2024-02-19 14:19:00,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-19 14:19:00,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 14:19:00,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:19:00,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-19 14:19:00,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:19:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-02-19 14:19:00,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:19:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-02-19 14:19:00,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:00,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048478606] [2024-02-19 14:19:00,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-19 14:19:00,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057207697] [2024-02-19 14:19:00,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057207697] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:19:00,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:19:00,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-02-19 14:19:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581580559] [2024-02-19 14:19:00,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-19 14:19:00,998 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:19:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:00,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:19:00,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-19 14:19:00,999 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-19 14:19:00,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 584 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 14:19:00,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:00,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-19 14:19:00,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:01,255 INFO L124 PetriNetUnfolderBase]: 118/368 cut-off events. [2024-02-19 14:19:01,255 INFO L125 PetriNetUnfolderBase]: For 320/328 co-relation queries the response was YES. [2024-02-19 14:19:01,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807 conditions, 368 events. 118/368 cut-off events. For 320/328 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1309 event pairs, 95 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 1435. Up to 282 conditions per place. [2024-02-19 14:19:01,258 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 76 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-02-19 14:19:01,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 1018 flow [2024-02-19 14:19:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:19:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:19:01,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-02-19 14:19:01,259 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-02-19 14:19:01,259 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2024-02-19 14:19:01,260 INFO L507 AbstractCegarLoop]: Abstraction has has 70 places, 97 transitions, 1018 flow [2024-02-19 14:19:01,260 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 14:19:01,260 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:01,260 INFO L234 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2024-02-19 14:19:01,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-19 14:19:01,472 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:01,472 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-19 14:19:01,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:01,473 INFO L85 PathProgramCache]: Analyzing trace with hash -985755604, now seen corresponding path program 4 times [2024-02-19 14:19:01,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:01,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90890744] [2024-02-19 14:19:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:01,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:01,892 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-19 14:19:01,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449558902] [2024-02-19 14:19:01,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:19:01,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:01,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:01,894 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) [2024-02-19 14:19:01,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-19 14:19:03,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:19:03,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:19:03,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 3709 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 14:19:03,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:19:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-02-19 14:19:03,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:19:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-02-19 14:19:03,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:03,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90890744] [2024-02-19 14:19:03,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-19 14:19:03,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449558902] [2024-02-19 14:19:03,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449558902] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:19:03,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:19:03,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-02-19 14:19:03,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439536035] [2024-02-19 14:19:03,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-19 14:19:03,497 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 14:19:03,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:03,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 14:19:03,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2024-02-19 14:19:03,499 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-19 14:19:03,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 97 transitions, 1018 flow. Second operand has 24 states, 24 states have (on average 16.333333333333332) internal successors, (392), 24 states have internal predecessors, (392), 0 states have call successors, (0), 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 14:19:03,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:03,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-19 14:19:03,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:04,642 INFO L124 PetriNetUnfolderBase]: 118/419 cut-off events. [2024-02-19 14:19:04,642 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2024-02-19 14:19:04,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2433 conditions, 419 events. 118/419 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1290 event pairs, 95 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 1666. Up to 330 conditions per place. [2024-02-19 14:19:04,645 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 37 selfloop transitions, 93 changer transitions 0/145 dead transitions. [2024-02-19 14:19:04,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 145 transitions, 1854 flow [2024-02-19 14:19:04,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-19 14:19:04,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-19 14:19:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 426 transitions. [2024-02-19 14:19:04,646 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.29583333333333334 [2024-02-19 14:19:04,647 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2024-02-19 14:19:04,647 INFO L507 AbstractCegarLoop]: Abstraction has has 93 places, 145 transitions, 1854 flow [2024-02-19 14:19:04,648 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.333333333333332) internal successors, (392), 24 states have internal predecessors, (392), 0 states have call successors, (0), 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 14:19:04,648 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:04,648 INFO L234 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2024-02-19 14:19:04,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-02-19 14:19:04,864 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:04,864 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-19 14:19:04,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:04,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1561271852, now seen corresponding path program 5 times [2024-02-19 14:19:04,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:04,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502259362] [2024-02-19 14:19:04,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:04,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:05,742 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-19 14:19:05,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658785132] [2024-02-19 14:19:05,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:19:05,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:05,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:05,746 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) [2024-02-19 14:19:05,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15