./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_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_93-evilcollapse_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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --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 14:18:58,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:18:58,786 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:18:58,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:18:58,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:18:58,822 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:18:58,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:18:58,823 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:18:58,824 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:18:58,827 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:18:58,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:18:58,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:18:58,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:18:58,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:18:58,829 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:18:58,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:18:58,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:18:58,829 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:18:58,829 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:18:58,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:18:58,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:18:58,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:18:58,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:18:58,831 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:18:58,831 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:18:58,831 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:18:58,832 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:18:58,832 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:18:58,832 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:18:58,832 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:18:58,833 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:18:58,833 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:18:58,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:18:58,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:18:58,834 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:18:58,834 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:18:58,835 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:18:58,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:18:58,835 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:18:58,835 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:18:58,835 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:18:58,836 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:18:58,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:18:58,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:18:59,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:18:59,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:18:59,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:18:59,125 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:18:59,126 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:18:59,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-02-19 14:19:00,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:19:00,370 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:19:00,370 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-02-19 14:19:00,390 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec829bdaa/77a75b03a21e4ba7bfad052314da2310/FLAGcef1142e3 [2024-02-19 14:19:00,404 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec829bdaa/77a75b03a21e4ba7bfad052314da2310 [2024-02-19 14:19:00,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:19:00,407 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:19:00,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:19:00,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:19:00,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:19:00,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:19:00" (1/1) ... [2024-02-19 14:19:00,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c921de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:00, skipping insertion in model container [2024-02-19 14:19:00,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:19:00" (1/1) ... [2024-02-19 14:19:00,454 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:19:00,812 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_93-evilcollapse_racefree.i[47038,47051] [2024-02-19 14:19:00,825 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:19:00,826 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:19:00,826 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:19:00,827 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:19:00,861 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:19:00,883 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:19:00,917 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_93-evilcollapse_racefree.i[47038,47051] [2024-02-19 14:19:00,924 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:19:00,925 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:19:00,925 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:19:00,925 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-19 14:19:00,950 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:19:01,030 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:19:01,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01 WrapperNode [2024-02-19 14:19:01,030 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:19:01,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:19:01,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:19:01,031 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:19:01,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01" (1/1) ... [2024-02-19 14:19:01,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01" (1/1) ... [2024-02-19 14:19:01,082 INFO L138 Inliner]: procedures = 280, calls = 55, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 237 [2024-02-19 14:19:01,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:19:01,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:19:01,083 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:19:01,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:19:01,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01" (1/1) ... [2024-02-19 14:19:01,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01" (1/1) ... [2024-02-19 14:19:01,096 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01" (1/1) ... [2024-02-19 14:19:01,113 INFO L175 MemorySlicer]: Split 30 memory accesses to 4 slices as follows [2, 21, 5, 2]. 70 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 14 writes are split as follows [0, 13, 0, 1]. [2024-02-19 14:19:01,113 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01" (1/1) ... [2024-02-19 14:19:01,113 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01" (1/1) ... [2024-02-19 14:19:01,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01" (1/1) ... [2024-02-19 14:19:01,149 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01" (1/1) ... [2024-02-19 14:19:01,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01" (1/1) ... [2024-02-19 14:19:01,155 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01" (1/1) ... [2024-02-19 14:19:01,158 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:19:01,158 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:19:01,158 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:19:01,158 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:19:01,159 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01" (1/1) ... [2024-02-19 14:19:01,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:19:01,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:01,185 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 14:19:01,203 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 14:19:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:19:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-19 14:19:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-19 14:19:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-19 14:19:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-19 14:19:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:19:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-19 14:19:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:19:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:19:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:19:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:19:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:19:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:19:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:19:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:19:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-19 14:19:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 14:19:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:19:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-19 14:19:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-19 14:19:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-19 14:19:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-19 14:19:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-19 14:19:01,233 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-19 14:19:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:19:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:19:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:19:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:19:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:19:01,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:19:01,239 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 14:19:01,385 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:19:01,387 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:19:01,691 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:19:01,692 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:19:01,928 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:19:01,928 INFO L320 CfgBuilder]: Removed 16 assume(true) statements. [2024-02-19 14:19:01,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:19:01 BoogieIcfgContainer [2024-02-19 14:19:01,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:19:01,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:19:01,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:19:01,932 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:19:01,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:19:00" (1/3) ... [2024-02-19 14:19:01,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307772b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:19:01, skipping insertion in model container [2024-02-19 14:19:01,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:01" (2/3) ... [2024-02-19 14:19:01,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307772b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:19:01, skipping insertion in model container [2024-02-19 14:19:01,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:19:01" (3/3) ... [2024-02-19 14:19:01,937 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2024-02-19 14:19:01,952 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:19:01,952 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:19:01,952 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:19:02,001 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-19 14:19:02,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 60 transitions, 127 flow [2024-02-19 14:19:02,067 INFO L124 PetriNetUnfolderBase]: 17/64 cut-off events. [2024-02-19 14:19:02,067 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-19 14:19:02,071 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 118 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 14:19:02,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 60 transitions, 127 flow [2024-02-19 14:19:02,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 58 transitions, 120 flow [2024-02-19 14:19:02,087 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:19:02,095 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;@6c71f32f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:19:02,096 INFO L370 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-02-19 14:19:02,102 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:19:02,102 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-02-19 14:19:02,102 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-19 14:19:02,102 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:02,103 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-19 14:19:02,103 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 14:19:02,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:02,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1096683063, now seen corresponding path program 1 times [2024-02-19 14:19:02,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:02,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578193517] [2024-02-19 14:19:02,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:02,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:02,506 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 14:19:02,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:02,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578193517] [2024-02-19 14:19:02,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578193517] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:19:02,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:19:02,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:19:02,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540295696] [2024-02-19 14:19:02,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:02,516 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:19:02,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:02,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:19:02,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:19:02,544 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-19 14:19:02,546 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 14:19:02,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:02,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-19 14:19:02,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:02,805 INFO L124 PetriNetUnfolderBase]: 116/321 cut-off events. [2024-02-19 14:19:02,806 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-19 14:19:02,808 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 1315 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 14:19:02,811 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-02-19 14:19:02,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 174 flow [2024-02-19 14:19:02,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:19:02,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:19:02,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-02-19 14:19:02,826 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-02-19 14:19:02,829 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-02-19 14:19:02,829 INFO L507 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 174 flow [2024-02-19 14:19:02,830 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 14:19:02,830 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:02,830 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:19:02,831 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:19:02,831 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 14:19:02,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:02,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1689706754, now seen corresponding path program 1 times [2024-02-19 14:19:02,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:02,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636927030] [2024-02-19 14:19:02,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:02,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:02,947 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 14:19:02,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:02,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636927030] [2024-02-19 14:19:02,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636927030] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:19:02,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:19:02,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:19:02,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226873317] [2024-02-19 14:19:02,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:02,951 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:19:02,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:02,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:19:02,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:19:02,952 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-19 14:19:02,952 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 14:19:02,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:02,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-19 14:19:02,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:03,128 INFO L124 PetriNetUnfolderBase]: 116/323 cut-off events. [2024-02-19 14:19:03,128 INFO L125 PetriNetUnfolderBase]: For 32/34 co-relation queries the response was YES. [2024-02-19 14:19:03,129 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 1313 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 14:19:03,130 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 33 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-02-19 14:19:03,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 256 flow [2024-02-19 14:19:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:19:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:19:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-02-19 14:19:03,132 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-02-19 14:19:03,133 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-02-19 14:19:03,133 INFO L507 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 256 flow [2024-02-19 14:19:03,133 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 14:19:03,133 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:03,133 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:19:03,133 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:19:03,133 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 14:19:03,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:03,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1515053939, now seen corresponding path program 1 times [2024-02-19 14:19:03,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:03,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659229929] [2024-02-19 14:19:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:03,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:03,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-19 14:19:03,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505372916] [2024-02-19 14:19:03,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:03,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:03,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:03,162 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 14:19:03,227 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 14:19:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:03,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-19 14:19:03,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:19:03,359 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 14:19:03,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:19:03,373 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 14:19:03,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659229929] [2024-02-19 14:19:03,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-19 14:19:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505372916] [2024-02-19 14:19:03,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505372916] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:19:03,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:19:03,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-02-19 14:19:03,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501628931] [2024-02-19 14:19:03,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-19 14:19:03,375 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:19:03,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:19:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-19 14:19:03,376 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-19 14:19:03,377 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 14:19:03,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:03,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-19 14:19:03,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:03,747 INFO L124 PetriNetUnfolderBase]: 116/332 cut-off events. [2024-02-19 14:19:03,748 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-02-19 14:19:03,748 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 1310 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 14:19:03,750 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 33 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2024-02-19 14:19:03,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 378 flow [2024-02-19 14:19:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:19:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:19:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-02-19 14:19:03,751 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-02-19 14:19:03,752 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-02-19 14:19:03,752 INFO L507 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 378 flow [2024-02-19 14:19:03,752 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 14:19:03,752 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:03,753 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:19:03,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-19 14:19:03,964 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 14:19:03,964 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 14:19:03,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:03,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1735322562, now seen corresponding path program 2 times [2024-02-19 14:19:03,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:03,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137878227] [2024-02-19 14:19:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:03,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:04,016 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-19 14:19:04,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271300879] [2024-02-19 14:19:04,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:19:04,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:04,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:04,018 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 14:19:04,035 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 14:19:04,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:19:04,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:19:04,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-19 14:19:04,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:19:04,281 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 14:19:04,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:19:04,334 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 14:19:04,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:04,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137878227] [2024-02-19 14:19:04,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-19 14:19:04,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271300879] [2024-02-19 14:19:04,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271300879] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:19:04,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:19:04,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-02-19 14:19:04,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895251446] [2024-02-19 14:19:04,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-19 14:19:04,337 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-19 14:19:04,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:04,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-19 14:19:04,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-02-19 14:19:04,338 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-19 14:19:04,339 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 14:19:04,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:04,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-19 14:19:04,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:05,003 INFO L124 PetriNetUnfolderBase]: 116/341 cut-off events. [2024-02-19 14:19:05,003 INFO L125 PetriNetUnfolderBase]: For 192/198 co-relation queries the response was YES. [2024-02-19 14:19:05,005 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 1378 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 14:19:05,008 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 33 selfloop transitions, 22 changer transitions 0/70 dead transitions. [2024-02-19 14:19:05,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 584 flow [2024-02-19 14:19:05,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-19 14:19:05,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-19 14:19:05,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-02-19 14:19:05,010 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-02-19 14:19:05,010 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-02-19 14:19:05,010 INFO L507 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 584 flow [2024-02-19 14:19:05,011 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 14:19:05,011 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:05,011 INFO L234 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:19:05,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-19 14:19:05,214 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 14:19:05,214 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 14:19:05,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:05,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2092148706, now seen corresponding path program 3 times [2024-02-19 14:19:05,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:05,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222221563] [2024-02-19 14:19:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:05,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:05,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-19 14:19:05,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467418894] [2024-02-19 14:19:05,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:19:05,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:05,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:05,340 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 14:19:05,357 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 14:19:05,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 14:19:05,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:19:05,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-19 14:19:05,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:19:05,644 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 14:19:05,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:19:05,679 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 14:19:05,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:05,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222221563] [2024-02-19 14:19:05,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-19 14:19:05,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467418894] [2024-02-19 14:19:05,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467418894] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:19:05,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:19:05,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-02-19 14:19:05,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821621395] [2024-02-19 14:19:05,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-19 14:19:05,684 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:19:05,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:05,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:19:05,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-19 14:19:05,686 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-19 14:19:05,686 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 14:19:05,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:05,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-19 14:19:05,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:05,963 INFO L124 PetriNetUnfolderBase]: 118/368 cut-off events. [2024-02-19 14:19:05,964 INFO L125 PetriNetUnfolderBase]: For 320/328 co-relation queries the response was YES. [2024-02-19 14:19:05,964 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 1315 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 14:19:05,966 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 76 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-02-19 14:19:05,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 1018 flow [2024-02-19 14:19:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:19:05,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:19:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-02-19 14:19:05,967 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-02-19 14:19:05,967 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2024-02-19 14:19:05,968 INFO L507 AbstractCegarLoop]: Abstraction has has 70 places, 97 transitions, 1018 flow [2024-02-19 14:19:05,968 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 14:19:05,968 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:05,968 INFO L234 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2024-02-19 14:19:05,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-02-19 14:19:06,179 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 14:19:06,180 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 14:19:06,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:06,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1525055971, now seen corresponding path program 4 times [2024-02-19 14:19:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:06,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047670165] [2024-02-19 14:19:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:06,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:06,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-19 14:19:06,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454830516] [2024-02-19 14:19:06,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:19:06,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:06,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:06,589 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 14:19:06,615 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 14:19:07,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:19:07,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:19:07,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 3712 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 14:19:07,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:19:07,973 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 14:19:07,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:19:08,137 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 14:19:08,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:08,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047670165] [2024-02-19 14:19:08,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-19 14:19:08,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454830516] [2024-02-19 14:19:08,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454830516] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:19:08,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:19:08,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-02-19 14:19:08,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806946766] [2024-02-19 14:19:08,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-19 14:19:08,139 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 14:19:08,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:08,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 14:19:08,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2024-02-19 14:19:08,140 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-19 14:19:08,140 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 14:19:08,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:08,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-19 14:19:08,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:08,980 INFO L124 PetriNetUnfolderBase]: 118/419 cut-off events. [2024-02-19 14:19:08,981 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2024-02-19 14:19:08,981 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 14:19:08,983 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 37 selfloop transitions, 93 changer transitions 0/145 dead transitions. [2024-02-19 14:19:08,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 145 transitions, 1854 flow [2024-02-19 14:19:08,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-19 14:19:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-19 14:19:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 426 transitions. [2024-02-19 14:19:08,985 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.29583333333333334 [2024-02-19 14:19:08,986 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2024-02-19 14:19:08,986 INFO L507 AbstractCegarLoop]: Abstraction has has 93 places, 145 transitions, 1854 flow [2024-02-19 14:19:08,986 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 14:19:08,986 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:08,986 INFO L234 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2024-02-19 14:19:09,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-19 14:19:09,200 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 14:19:09,200 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 14:19:09,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:09,201 INFO L85 PathProgramCache]: Analyzing trace with hash -99700707, now seen corresponding path program 5 times [2024-02-19 14:19:09,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:09,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566696391] [2024-02-19 14:19:09,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:09,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:10,013 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-19 14:19:10,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910901431] [2024-02-19 14:19:10,013 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:19:10,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:10,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:10,014 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 14:19:10,040 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