./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 448d4d75 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-448d4d7-m [2024-02-20 11:38:03,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 11:38:03,170 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 11:38:03,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 11:38:03,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 11:38:03,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 11:38:03,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 11:38:03,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 11:38:03,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 11:38:03,199 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 11:38:03,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 11:38:03,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 11:38:03,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 11:38:03,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 11:38:03,203 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 11:38:03,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 11:38:03,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 11:38:03,204 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 11:38:03,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 11:38:03,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 11:38:03,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 11:38:03,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 11:38:03,205 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 11:38:03,205 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 11:38:03,205 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 11:38:03,206 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 11:38:03,206 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 11:38:03,206 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 11:38:03,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 11:38:03,207 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 11:38:03,207 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 11:38:03,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 11:38:03,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:38:03,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 11:38:03,208 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 11:38:03,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 11:38:03,208 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 11:38:03,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 11:38:03,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 11:38:03,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 11:38:03,209 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 11:38:03,216 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 11:38:03,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 11:38:03,216 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 11:38:03,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 11:38:03,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 11:38:03,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 11:38:03,475 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 11:38:03,475 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 11:38:03,476 INFO L431 ainManager$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 [2024-02-20 11:38:04,467 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 11:38:04,688 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 11:38:04,689 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-02-20 11:38:04,711 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9170c9dd/cc6d05be8f7d4b05b4fb90dc0a4aa156/FLAG5ee01656d [2024-02-20 11:38:04,722 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9170c9dd/cc6d05be8f7d4b05b4fb90dc0a4aa156 [2024-02-20 11:38:04,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 11:38:04,725 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 11:38:04,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 11:38:04,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 11:38:04,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 11:38:04,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:38:04" (1/1) ... [2024-02-20 11:38:04,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58274037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:04, skipping insertion in model container [2024-02-20 11:38:04,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:38:04" (1/1) ... [2024-02-20 11:38:04,775 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 11:38:05,099 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] [2024-02-20 11:38:05,109 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-20 11:38:05,110 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-20 11:38:05,110 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-20 11:38:05,110 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-20 11:38:05,127 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:38:05,142 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 11:38:05,170 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] [2024-02-20 11:38:05,173 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-20 11:38:05,173 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-20 11:38:05,173 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-20 11:38:05,174 WARN L1583 CHandler]: Possible shadowing of function new [2024-02-20 11:38:05,183 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:38:05,222 INFO L206 MainTranslator]: Completed translation [2024-02-20 11:38:05,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05 WrapperNode [2024-02-20 11:38:05,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 11:38:05,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 11:38:05,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 11:38:05,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 11:38:05,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05" (1/1) ... [2024-02-20 11:38:05,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05" (1/1) ... [2024-02-20 11:38:05,277 INFO L138 Inliner]: procedures = 280, calls = 55, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 237 [2024-02-20 11:38:05,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 11:38:05,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 11:38:05,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 11:38:05,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 11:38:05,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05" (1/1) ... [2024-02-20 11:38:05,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05" (1/1) ... [2024-02-20 11:38:05,297 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05" (1/1) ... [2024-02-20 11:38:05,325 INFO L175 MemorySlicer]: Split 30 memory accesses to 4 slices as follows [2, 5, 2, 21]. 70 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 14 writes are split as follows [0, 0, 1, 13]. [2024-02-20 11:38:05,325 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05" (1/1) ... [2024-02-20 11:38:05,325 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05" (1/1) ... [2024-02-20 11:38:05,337 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05" (1/1) ... [2024-02-20 11:38:05,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05" (1/1) ... [2024-02-20 11:38:05,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05" (1/1) ... [2024-02-20 11:38:05,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05" (1/1) ... [2024-02-20 11:38:05,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 11:38:05,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 11:38:05,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 11:38:05,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 11:38:05,353 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05" (1/1) ... [2024-02-20 11:38:05,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:38:05,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:38:05,377 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) [2024-02-20 11:38:05,379 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 [2024-02-20 11:38:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 11:38:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-20 11:38:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-20 11:38:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-20 11:38:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-20 11:38:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 11:38:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-20 11:38:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 11:38:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 11:38:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 11:38:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 11:38:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 11:38:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 11:38:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 11:38:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 11:38:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-20 11:38:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 11:38:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 11:38:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-20 11:38:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-20 11:38:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-20 11:38:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-20 11:38:05,417 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-20 11:38:05,417 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-20 11:38:05,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 11:38:05,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 11:38:05,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 11:38:05,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 11:38:05,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 11:38:05,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 11:38:05,419 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 11:38:05,546 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 11:38:05,548 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 11:38:05,853 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 11:38:05,853 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 11:38:06,187 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 11:38:06,188 INFO L320 CfgBuilder]: Removed 16 assume(true) statements. [2024-02-20 11:38:06,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:38:06 BoogieIcfgContainer [2024-02-20 11:38:06,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 11:38:06,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 11:38:06,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 11:38:06,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 11:38:06,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 11:38:04" (1/3) ... [2024-02-20 11:38:06,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395bbbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:38:06, skipping insertion in model container [2024-02-20 11:38:06,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:38:05" (2/3) ... [2024-02-20 11:38:06,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395bbbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:38:06, skipping insertion in model container [2024-02-20 11:38:06,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:38:06" (3/3) ... [2024-02-20 11:38:06,197 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2024-02-20 11:38:06,213 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 11:38:06,213 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 11:38:06,213 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 11:38:06,287 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-20 11:38:06,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 60 transitions, 127 flow [2024-02-20 11:38:06,353 INFO L124 PetriNetUnfolderBase]: 17/64 cut-off events. [2024-02-20 11:38:06,353 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-20 11:38:06,358 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. [2024-02-20 11:38:06,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 60 transitions, 127 flow [2024-02-20 11:38:06,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 58 transitions, 120 flow [2024-02-20 11:38:06,375 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:38:06,382 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;@8f6ae40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:38:06,383 INFO L370 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-02-20 11:38:06,391 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:38:06,391 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-02-20 11:38:06,391 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-20 11:38:06,391 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:38:06,392 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-20 11:38:06,392 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-20 11:38:06,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:38:06,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1096683063, now seen corresponding path program 1 times [2024-02-20 11:38:06,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:38:06,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598217916] [2024-02-20 11:38:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:38:06,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:38:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:38:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:38:06,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:38:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598217916] [2024-02-20 11:38:06,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598217916] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:38:06,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:38:06,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 11:38:06,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061315824] [2024-02-20 11:38:06,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:38:06,719 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 11:38:06,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:38:06,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 11:38:06,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 11:38:06,748 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-20 11:38:06,751 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) [2024-02-20 11:38:06,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:38:06,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-20 11:38:06,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:38:06,964 INFO L124 PetriNetUnfolderBase]: 116/321 cut-off events. [2024-02-20 11:38:06,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-20 11:38:06,966 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. [2024-02-20 11:38:06,970 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-02-20 11:38:06,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 174 flow [2024-02-20 11:38:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 11:38:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 11:38:06,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-02-20 11:38:06,981 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-02-20 11:38:06,984 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-02-20 11:38:06,984 INFO L507 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 174 flow [2024-02-20 11:38:06,985 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) [2024-02-20 11:38:06,985 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:38:06,985 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:38:06,985 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 11:38:06,985 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-20 11:38:06,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:38:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1689706754, now seen corresponding path program 1 times [2024-02-20 11:38:06,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:38:06,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355393433] [2024-02-20 11:38:06,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:38:06,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:38:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:38:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:38:07,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:38:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355393433] [2024-02-20 11:38:07,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355393433] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:38:07,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:38:07,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 11:38:07,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076009599] [2024-02-20 11:38:07,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:38:07,100 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 11:38:07,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:38:07,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 11:38:07,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 11:38:07,101 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-20 11:38:07,101 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) [2024-02-20 11:38:07,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:38:07,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-20 11:38:07,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:38:07,287 INFO L124 PetriNetUnfolderBase]: 116/323 cut-off events. [2024-02-20 11:38:07,287 INFO L125 PetriNetUnfolderBase]: For 32/34 co-relation queries the response was YES. [2024-02-20 11:38:07,290 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. [2024-02-20 11:38:07,293 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 33 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-02-20 11:38:07,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 256 flow [2024-02-20 11:38:07,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 11:38:07,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 11:38:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-02-20 11:38:07,298 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-02-20 11:38:07,299 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-02-20 11:38:07,300 INFO L507 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 256 flow [2024-02-20 11:38:07,300 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) [2024-02-20 11:38:07,300 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:38:07,301 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:38:07,301 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 11:38:07,301 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-20 11:38:07,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:38:07,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1515053939, now seen corresponding path program 1 times [2024-02-20 11:38:07,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:38:07,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883754500] [2024-02-20 11:38:07,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:38:07,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:38:07,353 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-20 11:38:07,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417840111] [2024-02-20 11:38:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:38:07,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:38:07,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:38:07,355 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) [2024-02-20 11:38:07,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-20 11:38:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:38:07,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-20 11:38:07,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:38:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:38:07,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:38:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:38:07,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:38:07,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883754500] [2024-02-20 11:38:07,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-20 11:38:07,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417840111] [2024-02-20 11:38:07,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417840111] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:38:07,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:38:07,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-02-20 11:38:07,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497135629] [2024-02-20 11:38:07,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-20 11:38:07,581 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-20 11:38:07,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:38:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-20 11:38:07,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-20 11:38:07,583 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-20 11:38:07,584 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) [2024-02-20 11:38:07,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:38:07,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-20 11:38:07,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:38:07,850 INFO L124 PetriNetUnfolderBase]: 116/332 cut-off events. [2024-02-20 11:38:07,850 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-02-20 11:38:07,851 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. [2024-02-20 11:38:07,853 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 33 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2024-02-20 11:38:07,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 378 flow [2024-02-20 11:38:07,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:38:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:38:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-02-20 11:38:07,859 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-02-20 11:38:07,860 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-02-20 11:38:07,860 INFO L507 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 378 flow [2024-02-20 11:38:07,860 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) [2024-02-20 11:38:07,860 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:38:07,860 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:38:07,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-20 11:38:08,068 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 [2024-02-20 11:38:08,069 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-20 11:38:08,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:38:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1735322562, now seen corresponding path program 2 times [2024-02-20 11:38:08,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:38:08,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954509037] [2024-02-20 11:38:08,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:38:08,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:38:08,132 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-20 11:38:08,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922097470] [2024-02-20 11:38:08,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:38:08,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:38:08,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:38:08,181 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) [2024-02-20 11:38:08,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-20 11:38:08,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:38:08,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:38:08,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 11:38:08,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:38:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:38:08,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:38:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 11:38:08,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:38:08,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954509037] [2024-02-20 11:38:08,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-20 11:38:08,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922097470] [2024-02-20 11:38:08,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922097470] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:38:08,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:38:08,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-02-20 11:38:08,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711238185] [2024-02-20 11:38:08,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-20 11:38:08,525 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:38:08,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:38:08,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:38:08,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:38:08,527 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-20 11:38:08,527 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) [2024-02-20 11:38:08,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:38:08,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-20 11:38:08,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:38:09,288 INFO L124 PetriNetUnfolderBase]: 116/341 cut-off events. [2024-02-20 11:38:09,289 INFO L125 PetriNetUnfolderBase]: For 192/198 co-relation queries the response was YES. [2024-02-20 11:38:09,289 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. [2024-02-20 11:38:09,291 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 33 selfloop transitions, 22 changer transitions 0/70 dead transitions. [2024-02-20 11:38:09,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 584 flow [2024-02-20 11:38:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:38:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:38:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-02-20 11:38:09,293 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-02-20 11:38:09,293 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-02-20 11:38:09,293 INFO L507 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 584 flow [2024-02-20 11:38:09,294 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) [2024-02-20 11:38:09,294 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:38:09,294 INFO L234 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:38:09,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-20 11:38:09,507 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 [2024-02-20 11:38:09,507 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-20 11:38:09,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:38:09,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2092148706, now seen corresponding path program 3 times [2024-02-20 11:38:09,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:38:09,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828899388] [2024-02-20 11:38:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:38:09,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:38:09,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-20 11:38:09,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332317317] [2024-02-20 11:38:09,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:38:09,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:38:09,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:38:09,619 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) [2024-02-20 11:38:09,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-20 11:38:09,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:38:09,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:38:09,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2024-02-20 11:38:09,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:38:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-02-20 11:38:09,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:38:09,952 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-02-20 11:38:09,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:38:09,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828899388] [2024-02-20 11:38:09,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-20 11:38:09,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332317317] [2024-02-20 11:38:09,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332317317] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:38:09,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:38:09,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-02-20 11:38:09,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784590974] [2024-02-20 11:38:09,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-20 11:38:09,954 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-20 11:38:09,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:38:09,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-20 11:38:09,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-20 11:38:09,955 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-20 11:38:09,955 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) [2024-02-20 11:38:09,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:38:09,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-20 11:38:09,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:38:10,322 INFO L124 PetriNetUnfolderBase]: 118/368 cut-off events. [2024-02-20 11:38:10,322 INFO L125 PetriNetUnfolderBase]: For 320/328 co-relation queries the response was YES. [2024-02-20 11:38:10,323 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. [2024-02-20 11:38:10,324 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 76 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-02-20 11:38:10,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 1018 flow [2024-02-20 11:38:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:38:10,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:38:10,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-02-20 11:38:10,326 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-02-20 11:38:10,327 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2024-02-20 11:38:10,327 INFO L507 AbstractCegarLoop]: Abstraction has has 70 places, 97 transitions, 1018 flow [2024-02-20 11:38:10,328 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) [2024-02-20 11:38:10,328 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:38:10,328 INFO L234 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2024-02-20 11:38:10,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-20 11:38:10,542 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 [2024-02-20 11:38:10,542 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-20 11:38:10,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:38:10,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1525055971, now seen corresponding path program 4 times [2024-02-20 11:38:10,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:38:10,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930647746] [2024-02-20 11:38:10,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:38:10,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:38:10,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-20 11:38:10,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476501357] [2024-02-20 11:38:10,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:38:10,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:38:10,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:38:10,944 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) [2024-02-20 11:38:10,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-20 11:38:12,217 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:38:12,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:38:12,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 3712 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 11:38:12,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:38:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-02-20 11:38:12,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:38:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-02-20 11:38:12,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:38:12,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930647746] [2024-02-20 11:38:12,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-20 11:38:12,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476501357] [2024-02-20 11:38:12,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476501357] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:38:12,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:38:12,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-02-20 11:38:12,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413254802] [2024-02-20 11:38:12,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-20 11:38:12,517 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 11:38:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:38:12,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 11:38:12,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2024-02-20 11:38:12,518 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-02-20 11:38:12,518 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) [2024-02-20 11:38:12,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:38:12,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-02-20 11:38:12,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:38:14,075 INFO L124 PetriNetUnfolderBase]: 118/419 cut-off events. [2024-02-20 11:38:14,076 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2024-02-20 11:38:14,076 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. [2024-02-20 11:38:14,079 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 37 selfloop transitions, 93 changer transitions 0/145 dead transitions. [2024-02-20 11:38:14,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 145 transitions, 1854 flow [2024-02-20 11:38:14,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-20 11:38:14,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-20 11:38:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 426 transitions. [2024-02-20 11:38:14,081 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.29583333333333334 [2024-02-20 11:38:14,081 INFO L308 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2024-02-20 11:38:14,082 INFO L507 AbstractCegarLoop]: Abstraction has has 93 places, 145 transitions, 1854 flow [2024-02-20 11:38:14,082 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) [2024-02-20 11:38:14,082 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:38:14,082 INFO L234 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2024-02-20 11:38:14,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-20 11:38:14,288 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 [2024-02-20 11:38:14,288 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-02-20 11:38:14,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:38:14,289 INFO L85 PathProgramCache]: Analyzing trace with hash -99700707, now seen corresponding path program 5 times [2024-02-20 11:38:14,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:38:14,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243476511] [2024-02-20 11:38:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:38:14,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:38:15,028 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-20 11:38:15,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206010580] [2024-02-20 11:38:15,029 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:38:15,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:38:15,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:38:15,030 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) [2024-02-20 11:38:15,044 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