./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c --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/weaver/popl20-more-min-array-hom.wvr.c -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 ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 --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 12:21:33,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 12:21:33,233 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 12:21:33,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 12:21:33,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 12:21:33,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 12:21:33,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 12:21:33,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 12:21:33,274 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 12:21:33,274 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 12:21:33,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 12:21:33,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 12:21:33,275 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 12:21:33,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 12:21:33,276 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 12:21:33,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 12:21:33,277 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 12:21:33,277 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 12:21:33,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 12:21:33,278 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 12:21:33,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 12:21:33,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 12:21:33,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 12:21:33,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 12:21:33,280 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 12:21:33,281 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 12:21:33,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 12:21:33,281 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 12:21:33,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 12:21:33,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 12:21:33,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 12:21:33,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 12:21:33,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:21:33,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 12:21:33,284 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 12:21:33,284 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 12:21:33,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 12:21:33,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 12:21:33,285 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 12:21:33,285 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 12:21:33,285 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 12:21:33,286 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 12:21:33,286 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 12:21:33,286 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 12:21:33,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 12:21:33,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 12:21:33,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 12:21:33,558 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 12:21:33,558 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 12:21:33,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2024-02-20 12:21:34,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 12:21:34,836 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 12:21:34,837 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2024-02-20 12:21:34,847 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b960d63/e70ef8e948d94cfd9d49ae06790159b1/FLAG4a44de8a1 [2024-02-20 12:21:34,861 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b960d63/e70ef8e948d94cfd9d49ae06790159b1 [2024-02-20 12:21:34,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 12:21:34,867 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 12:21:34,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 12:21:34,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 12:21:34,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 12:21:34,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:21:34" (1/1) ... [2024-02-20 12:21:34,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120e7977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:34, skipping insertion in model container [2024-02-20 12:21:34,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:21:34" (1/1) ... [2024-02-20 12:21:34,905 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 12:21:35,052 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2024-02-20 12:21:35,063 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:21:35,076 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 12:21:35,091 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2024-02-20 12:21:35,094 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:21:35,105 INFO L206 MainTranslator]: Completed translation [2024-02-20 12:21:35,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35 WrapperNode [2024-02-20 12:21:35,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 12:21:35,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 12:21:35,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 12:21:35,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 12:21:35,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35" (1/1) ... [2024-02-20 12:21:35,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35" (1/1) ... [2024-02-20 12:21:35,147 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 105 [2024-02-20 12:21:35,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 12:21:35,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 12:21:35,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 12:21:35,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 12:21:35,165 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35" (1/1) ... [2024-02-20 12:21:35,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35" (1/1) ... [2024-02-20 12:21:35,182 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35" (1/1) ... [2024-02-20 12:21:35,205 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 7, 2, 2, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-20 12:21:35,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35" (1/1) ... [2024-02-20 12:21:35,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35" (1/1) ... [2024-02-20 12:21:35,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35" (1/1) ... [2024-02-20 12:21:35,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35" (1/1) ... [2024-02-20 12:21:35,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35" (1/1) ... [2024-02-20 12:21:35,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35" (1/1) ... [2024-02-20 12:21:35,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 12:21:35,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 12:21:35,226 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 12:21:35,226 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 12:21:35,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35" (1/1) ... [2024-02-20 12:21:35,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:21:35,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:21:35,281 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 12:21:35,283 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 12:21:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 12:21:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 12:21:35,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 12:21:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 12:21:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 12:21:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-20 12:21:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-20 12:21:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 12:21:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 12:21:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 12:21:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 12:21:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-20 12:21:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 12:21:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 12:21:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 12:21:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 12:21:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 12:21:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-20 12:21:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-20 12:21:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-20 12:21:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 12:21:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 12:21:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 12:21:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 12:21:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 12:21:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 12:21:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 12:21:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-20 12:21:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 12:21:35,390 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 12:21:35,495 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 12:21:35,496 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 12:21:35,687 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 12:21:35,687 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 12:21:35,828 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 12:21:35,828 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-20 12:21:35,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:21:35 BoogieIcfgContainer [2024-02-20 12:21:35,829 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 12:21:35,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 12:21:35,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 12:21:35,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 12:21:35,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 12:21:34" (1/3) ... [2024-02-20 12:21:35,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1740d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:21:35, skipping insertion in model container [2024-02-20 12:21:35,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:21:35" (2/3) ... [2024-02-20 12:21:35,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1740d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:21:35, skipping insertion in model container [2024-02-20 12:21:35,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:21:35" (3/3) ... [2024-02-20 12:21:35,835 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2024-02-20 12:21:35,849 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 12:21:35,850 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 12:21:35,850 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 12:21:35,904 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-20 12:21:35,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 35 transitions, 91 flow [2024-02-20 12:21:35,972 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2024-02-20 12:21:35,972 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 12:21:35,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 4/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-02-20 12:21:35,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 35 transitions, 91 flow [2024-02-20 12:21:35,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 31 transitions, 80 flow [2024-02-20 12:21:35,987 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 12:21:35,993 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;@1fcceb44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 12:21:35,993 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-20 12:21:36,005 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 12:21:36,005 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-02-20 12:21:36,005 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 12:21:36,005 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:21:36,006 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:21:36,006 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:21:36,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:21:36,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1736156699, now seen corresponding path program 1 times [2024-02-20 12:21:36,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:21:36,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501645837] [2024-02-20 12:21:36,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:21:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:21:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:21:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:21:36,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:21:36,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501645837] [2024-02-20 12:21:36,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501645837] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:21:36,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:21:36,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 12:21:36,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783125863] [2024-02-20 12:21:36,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:21:36,527 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 12:21:36,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:21:36,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 12:21:36,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 12:21:36,555 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-02-20 12:21:36,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 12:21:36,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:21:36,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-02-20 12:21:36,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:21:36,795 INFO L124 PetriNetUnfolderBase]: 655/1008 cut-off events. [2024-02-20 12:21:36,796 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-02-20 12:21:36,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 1008 events. 655/1008 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4385 event pairs, 93 based on Foata normal form. 1/993 useless extension candidates. Maximal degree in co-relation 1605. Up to 822 conditions per place. [2024-02-20 12:21:36,808 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 35 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2024-02-20 12:21:36,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 207 flow [2024-02-20 12:21:36,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 12:21:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 12:21:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-02-20 12:21:36,819 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2024-02-20 12:21:36,822 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2024-02-20 12:21:36,823 INFO L507 AbstractCegarLoop]: Abstraction has has 39 places, 47 transitions, 207 flow [2024-02-20 12:21:36,823 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 12:21:36,823 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:21:36,824 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:21:36,824 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 12:21:36,824 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:21:36,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:21:36,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1292858546, now seen corresponding path program 1 times [2024-02-20 12:21:36,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:21:36,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993683861] [2024-02-20 12:21:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:21:36,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:21:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:21:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:21:36,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:21:36,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993683861] [2024-02-20 12:21:36,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993683861] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:21:36,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:21:36,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 12:21:36,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205764446] [2024-02-20 12:21:36,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:21:37,000 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 12:21:37,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:21:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 12:21:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 12:21:37,008 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-02-20 12:21:37,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 47 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 12:21:37,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:21:37,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-02-20 12:21:37,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:21:37,240 INFO L124 PetriNetUnfolderBase]: 655/1009 cut-off events. [2024-02-20 12:21:37,241 INFO L125 PetriNetUnfolderBase]: For 192/224 co-relation queries the response was YES. [2024-02-20 12:21:37,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 1009 events. 655/1009 cut-off events. For 192/224 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4429 event pairs, 93 based on Foata normal form. 0/995 useless extension candidates. Maximal degree in co-relation 2338. Up to 903 conditions per place. [2024-02-20 12:21:37,250 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 38 selfloop transitions, 2 changer transitions 1/48 dead transitions. [2024-02-20 12:21:37,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 293 flow [2024-02-20 12:21:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 12:21:37,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 12:21:37,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-02-20 12:21:37,254 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-02-20 12:21:37,254 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2024-02-20 12:21:37,255 INFO L507 AbstractCegarLoop]: Abstraction has has 41 places, 48 transitions, 293 flow [2024-02-20 12:21:37,255 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 12:21:37,255 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:21:37,255 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:21:37,256 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 12:21:37,257 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:21:37,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:21:37,260 INFO L85 PathProgramCache]: Analyzing trace with hash 785058019, now seen corresponding path program 1 times [2024-02-20 12:21:37,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:21:37,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964757059] [2024-02-20 12:21:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:21:37,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:21:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:21:37,362 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 12:21:37,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:21:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964757059] [2024-02-20 12:21:37,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964757059] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:21:37,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:21:37,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 12:21:37,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713467097] [2024-02-20 12:21:37,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:21:37,364 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:21:37,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:21:37,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:21:37,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 12:21:37,374 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-20 12:21:37,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 48 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 12:21:37,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:21:37,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-20 12:21:37,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:21:37,555 INFO L124 PetriNetUnfolderBase]: 868/1257 cut-off events. [2024-02-20 12:21:37,556 INFO L125 PetriNetUnfolderBase]: For 1309/1357 co-relation queries the response was YES. [2024-02-20 12:21:37,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4687 conditions, 1257 events. 868/1257 cut-off events. For 1309/1357 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5497 event pairs, 69 based on Foata normal form. 54/1301 useless extension candidates. Maximal degree in co-relation 3777. Up to 1061 conditions per place. [2024-02-20 12:21:37,570 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 58 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-02-20 12:21:37,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 67 transitions, 536 flow [2024-02-20 12:21:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:21:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:21:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-02-20 12:21:37,572 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-02-20 12:21:37,573 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-02-20 12:21:37,573 INFO L507 AbstractCegarLoop]: Abstraction has has 44 places, 67 transitions, 536 flow [2024-02-20 12:21:37,573 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 12:21:37,574 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:21:37,574 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:21:37,574 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-20 12:21:37,574 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:21:37,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:21:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash 437691015, now seen corresponding path program 1 times [2024-02-20 12:21:37,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:21:37,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204926117] [2024-02-20 12:21:37,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:21:37,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:21:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:21:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:21:37,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:21:37,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204926117] [2024-02-20 12:21:37,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204926117] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:21:37,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851842926] [2024-02-20 12:21:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:21:37,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:21:37,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:21:37,714 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 12:21:37,717 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 12:21:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:21:37,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 12:21:37,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:21:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:21:37,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:21:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:21:37,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851842926] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 12:21:37,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 12:21:37,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-02-20 12:21:37,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332008528] [2024-02-20 12:21:37,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:21:37,939 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:21:37,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:21:37,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:21:37,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-20 12:21:37,947 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-20 12:21:37,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 67 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 12:21:37,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:21:37,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-20 12:21:37,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:21:38,054 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([436] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [24#L70-4true, 4#L47true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:21:38,055 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is cut-off event [2024-02-20 12:21:38,055 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:21:38,055 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:21:38,055 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:21:38,056 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([437] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_65) (+ v_~A~0.offset_65 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~min2~0_37 v_~min2~0_36) (<= v_~min2~0_37 .cse0)) (and (= .cse0 v_~min2~0_36) (< .cse0 v_~min2~0_37)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_37} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_36} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~min2~0][59], [5#L94-4true, 4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:21:38,056 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,056 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,056 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,056 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,058 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([437] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_65) (+ v_~A~0.offset_65 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~min2~0_37 v_~min2~0_36) (<= v_~min2~0_37 .cse0)) (and (= .cse0 v_~min2~0_36) (< .cse0 v_~min2~0_37)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_37} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_36} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~min2~0][59], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:21:38,058 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-20 12:21:38,058 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:21:38,058 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:21:38,059 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:21:38,059 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([436] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:21:38,059 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,059 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,059 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,059 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,061 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([436] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 31#L46-4true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:21:38,061 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is cut-off event [2024-02-20 12:21:38,061 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:21:38,062 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:21:38,062 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:21:38,069 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([436] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [5#L94-4true, 4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:21:38,069 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is not cut-off event [2024-02-20 12:21:38,069 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is not cut-off event [2024-02-20 12:21:38,069 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is not cut-off event [2024-02-20 12:21:38,069 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is not cut-off event [2024-02-20 12:21:38,070 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([437] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_65) (+ v_~A~0.offset_65 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~min2~0_37 v_~min2~0_36) (<= v_~min2~0_37 .cse0)) (and (= .cse0 v_~min2~0_36) (< .cse0 v_~min2~0_37)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_37} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_36} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~min2~0][59], [24#L70-4true, 4#L47true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:21:38,070 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,070 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,070 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,070 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,071 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([437] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_65) (+ v_~A~0.offset_65 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~min2~0_37 v_~min2~0_36) (<= v_~min2~0_37 .cse0)) (and (= .cse0 v_~min2~0_36) (< .cse0 v_~min2~0_37)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_37} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_36} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~min2~0][59], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:21:38,071 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-20 12:21:38,071 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:21:38,071 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:21:38,071 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:21:38,071 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:21:38,072 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([436] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:21:38,072 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,072 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,072 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,072 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,072 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,075 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([437] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_65) (+ v_~A~0.offset_65 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~min2~0_37 v_~min2~0_36) (<= v_~min2~0_37 .cse0)) (and (= .cse0 v_~min2~0_36) (< .cse0 v_~min2~0_37)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_37} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_36} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~min2~0][59], [18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 47#true, 31#L46-4true, 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:21:38,075 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,076 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,079 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,079 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:21:38,119 INFO L124 PetriNetUnfolderBase]: 1130/1607 cut-off events. [2024-02-20 12:21:38,120 INFO L125 PetriNetUnfolderBase]: For 4245/4348 co-relation queries the response was YES. [2024-02-20 12:21:38,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7120 conditions, 1607 events. 1130/1607 cut-off events. For 4245/4348 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7003 event pairs, 102 based on Foata normal form. 125/1704 useless extension candidates. Maximal degree in co-relation 6829. Up to 1276 conditions per place. [2024-02-20 12:21:38,134 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 72 selfloop transitions, 6 changer transitions 0/84 dead transitions. [2024-02-20 12:21:38,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 84 transitions, 822 flow [2024-02-20 12:21:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:21:38,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:21:38,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-02-20 12:21:38,139 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-02-20 12:21:38,145 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-02-20 12:21:38,146 INFO L507 AbstractCegarLoop]: Abstraction has has 48 places, 84 transitions, 822 flow [2024-02-20 12:21:38,146 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 12:21:38,146 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:21:38,146 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:21:38,162 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 12:21:38,359 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:21:38,360 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:21:38,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:21:38,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1867981122, now seen corresponding path program 1 times [2024-02-20 12:21:38,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:21:38,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612408435] [2024-02-20 12:21:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:21:38,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:21:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:21:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:21:38,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:21:38,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612408435] [2024-02-20 12:21:38,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612408435] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:21:38,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581567308] [2024-02-20 12:21:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:21:38,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:21:38,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:21:38,989 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 12:21:39,028 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 12:21:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:21:39,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 12:21:39,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:21:39,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:21:39,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2024-02-20 12:21:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:21:39,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:21:41,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 254 [2024-02-20 12:21:41,772 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:21:41,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 372 treesize of output 376 [2024-02-20 12:21:55,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 208 [2024-02-20 12:21:55,855 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:21:55,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 261 treesize of output 291 [2024-02-20 12:21:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:21:59,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581567308] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:21:59,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:21:59,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2024-02-20 12:21:59,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495006733] [2024-02-20 12:21:59,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:21:59,687 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:21:59,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:21:59,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:21:59,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:21:59,877 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-20 12:21:59,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 84 transitions, 822 flow. Second operand has 24 states, 24 states have (on average 11.0) internal successors, (264), 24 states have internal predecessors, (264), 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 12:21:59,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:21:59,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-20 12:21:59,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:01,128 INFO L124 PetriNetUnfolderBase]: 1689/2443 cut-off events. [2024-02-20 12:22:01,128 INFO L125 PetriNetUnfolderBase]: For 6943/7039 co-relation queries the response was YES. [2024-02-20 12:22:01,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12931 conditions, 2443 events. 1689/2443 cut-off events. For 6943/7039 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11265 event pairs, 115 based on Foata normal form. 25/2434 useless extension candidates. Maximal degree in co-relation 10146. Up to 1934 conditions per place. [2024-02-20 12:22:01,157 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 169 selfloop transitions, 65 changer transitions 1/242 dead transitions. [2024-02-20 12:22:01,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 242 transitions, 2902 flow [2024-02-20 12:22:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-02-20 12:22:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-02-20 12:22:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 255 transitions. [2024-02-20 12:22:01,159 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-02-20 12:22:01,160 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 25 predicate places. [2024-02-20 12:22:01,160 INFO L507 AbstractCegarLoop]: Abstraction has has 62 places, 242 transitions, 2902 flow [2024-02-20 12:22:01,161 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.0) internal successors, (264), 24 states have internal predecessors, (264), 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 12:22:01,161 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:01,161 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:22:01,195 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 12:22:01,378 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:01,378 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:22:01,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:01,379 INFO L85 PathProgramCache]: Analyzing trace with hash 961640770, now seen corresponding path program 2 times [2024-02-20 12:22:01,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:01,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045366857] [2024-02-20 12:22:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:01,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:01,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:01,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045366857] [2024-02-20 12:22:01,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045366857] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:01,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808579119] [2024-02-20 12:22:01,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:22:01,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:01,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:01,980 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 12:22:01,981 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 12:22:02,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:22:02,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:02,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-20 12:22:02,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:02,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:22:02,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2024-02-20 12:22:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:02,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:03,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 167 [2024-02-20 12:22:03,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:22:03,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 215 treesize of output 219 [2024-02-20 12:22:08,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2024-02-20 12:22:08,580 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-02-20 12:22:08,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2024-02-20 12:22:08,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 195 [2024-02-20 12:22:08,831 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-02-20 12:22:08,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 296 treesize of output 1 [2024-02-20 12:22:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:08,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808579119] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:08,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:08,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2024-02-20 12:22:08,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580508805] [2024-02-20 12:22:08,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:08,886 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-20 12:22:08,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-20 12:22:08,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-02-20 12:22:09,106 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-02-20 12:22:09,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 242 transitions, 2902 flow. Second operand has 23 states, 23 states have (on average 10.173913043478262) internal successors, (234), 23 states have internal predecessors, (234), 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 12:22:09,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:09,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-02-20 12:22:09,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:11,355 INFO L124 PetriNetUnfolderBase]: 2281/3301 cut-off events. [2024-02-20 12:22:11,355 INFO L125 PetriNetUnfolderBase]: For 10027/10125 co-relation queries the response was YES. [2024-02-20 12:22:11,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20612 conditions, 3301 events. 2281/3301 cut-off events. For 10027/10125 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 16163 event pairs, 109 based on Foata normal form. 9/3290 useless extension candidates. Maximal degree in co-relation 15913. Up to 2640 conditions per place. [2024-02-20 12:22:11,399 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 277 selfloop transitions, 113 changer transitions 2/397 dead transitions. [2024-02-20 12:22:11,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 397 transitions, 5476 flow [2024-02-20 12:22:11,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-20 12:22:11,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-20 12:22:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 333 transitions. [2024-02-20 12:22:11,401 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4530612244897959 [2024-02-20 12:22:11,402 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 45 predicate places. [2024-02-20 12:22:11,402 INFO L507 AbstractCegarLoop]: Abstraction has has 82 places, 397 transitions, 5476 flow [2024-02-20 12:22:11,403 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.173913043478262) internal successors, (234), 23 states have internal predecessors, (234), 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 12:22:11,403 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:11,403 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:22:11,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-02-20 12:22:11,604 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:11,604 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:22:11,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:11,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2075764430, now seen corresponding path program 3 times [2024-02-20 12:22:11,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:11,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045398478] [2024-02-20 12:22:11,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:11,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:12,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:12,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045398478] [2024-02-20 12:22:12,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045398478] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:12,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363106743] [2024-02-20 12:22:12,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:22:12,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:12,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:12,249 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 12:22:12,268 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 12:22:12,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:22:12,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:12,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-20 12:22:12,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:12,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:22:12,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 41 [2024-02-20 12:22:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:12,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:14,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 254 [2024-02-20 12:22:14,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:22:14,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 372 treesize of output 376 [2024-02-20 12:22:33,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 208 [2024-02-20 12:22:33,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:22:33,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 261 treesize of output 291 [2024-02-20 12:22:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:36,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363106743] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:36,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:36,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2024-02-20 12:22:36,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134062176] [2024-02-20 12:22:36,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:36,423 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-02-20 12:22:36,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:36,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-02-20 12:22:36,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2024-02-20 12:22:36,582 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-02-20 12:22:36,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 397 transitions, 5476 flow. Second operand has 22 states, 22 states have (on average 10.136363636363637) internal successors, (223), 22 states have internal predecessors, (223), 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 12:22:36,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:36,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-02-20 12:22:36,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:38,668 INFO L124 PetriNetUnfolderBase]: 3049/4416 cut-off events. [2024-02-20 12:22:38,669 INFO L125 PetriNetUnfolderBase]: For 16429/16573 co-relation queries the response was YES. [2024-02-20 12:22:38,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31889 conditions, 4416 events. 3049/4416 cut-off events. For 16429/16573 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 23050 event pairs, 121 based on Foata normal form. 5/4399 useless extension candidates. Maximal degree in co-relation 26034. Up to 3601 conditions per place. [2024-02-20 12:22:38,709 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 474 selfloop transitions, 122 changer transitions 5/606 dead transitions. [2024-02-20 12:22:38,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 606 transitions, 9585 flow [2024-02-20 12:22:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-20 12:22:38,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-20 12:22:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 312 transitions. [2024-02-20 12:22:38,712 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4691729323308271 [2024-02-20 12:22:38,712 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 63 predicate places. [2024-02-20 12:22:38,712 INFO L507 AbstractCegarLoop]: Abstraction has has 100 places, 606 transitions, 9585 flow [2024-02-20 12:22:38,713 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.136363636363637) internal successors, (223), 22 states have internal predecessors, (223), 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 12:22:38,713 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:38,713 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:22:38,732 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 12:22:38,925 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:38,925 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:22:38,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:38,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1183594780, now seen corresponding path program 4 times [2024-02-20 12:22:38,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:38,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114239644] [2024-02-20 12:22:38,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:38,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:39,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:39,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114239644] [2024-02-20 12:22:39,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114239644] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:39,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890045518] [2024-02-20 12:22:39,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:22:39,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:39,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:39,553 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 12:22:39,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-20 12:22:39,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:22:39,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:39,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-20 12:22:39,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:39,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:22:39,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2024-02-20 12:22:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:39,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:41,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2024-02-20 12:22:41,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:22:41,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 119 [2024-02-20 12:22:41,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 195 [2024-02-20 12:22:41,569 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-02-20 12:22:41,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 296 treesize of output 1 [2024-02-20 12:22:41,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 167 [2024-02-20 12:22:41,582 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-02-20 12:22:41,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 215 treesize of output 1 [2024-02-20 12:22:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:41,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890045518] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:41,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:41,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2024-02-20 12:22:41,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199856552] [2024-02-20 12:22:41,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:41,617 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-02-20 12:22:41,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:41,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-02-20 12:22:41,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-02-20 12:22:41,765 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-02-20 12:22:41,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 606 transitions, 9585 flow. Second operand has 22 states, 22 states have (on average 10.0) internal successors, (220), 22 states have internal predecessors, (220), 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 12:22:41,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:41,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-02-20 12:22:41,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:43,831 INFO L124 PetriNetUnfolderBase]: 3393/4911 cut-off events. [2024-02-20 12:22:43,831 INFO L125 PetriNetUnfolderBase]: For 22843/23029 co-relation queries the response was YES. [2024-02-20 12:22:43,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40172 conditions, 4911 events. 3393/4911 cut-off events. For 22843/23029 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 25828 event pairs, 129 based on Foata normal form. 10/4895 useless extension candidates. Maximal degree in co-relation 32440. Up to 4038 conditions per place. [2024-02-20 12:22:43,888 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 487 selfloop transitions, 229 changer transitions 7/728 dead transitions. [2024-02-20 12:22:43,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 728 transitions, 12971 flow [2024-02-20 12:22:43,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-02-20 12:22:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-02-20 12:22:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 350 transitions. [2024-02-20 12:22:43,891 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-02-20 12:22:43,892 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 84 predicate places. [2024-02-20 12:22:43,892 INFO L507 AbstractCegarLoop]: Abstraction has has 121 places, 728 transitions, 12971 flow [2024-02-20 12:22:43,892 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.0) internal successors, (220), 22 states have internal predecessors, (220), 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 12:22:43,892 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:43,892 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:22:43,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-20 12:22:44,096 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:44,097 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:22:44,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:44,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1574460974, now seen corresponding path program 5 times [2024-02-20 12:22:44,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:44,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49885784] [2024-02-20 12:22:44,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:44,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:44,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:44,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49885784] [2024-02-20 12:22:44,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49885784] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:44,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787178687] [2024-02-20 12:22:44,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:22:44,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:44,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:44,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:22:44,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-20 12:22:44,581 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:22:44,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:44,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 28 conjunts are in the unsatisfiable core [2024-02-20 12:22:44,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:44,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:22:44,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2024-02-20 12:22:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:44,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:47,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 114 [2024-02-20 12:22:47,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 141 [2024-02-20 12:22:47,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 66 [2024-02-20 12:22:47,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 83 [2024-02-20 12:22:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:47,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787178687] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:47,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:47,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 28 [2024-02-20 12:22:47,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465732138] [2024-02-20 12:22:47,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:47,808 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-02-20 12:22:47,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:47,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-02-20 12:22:47,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2024-02-20 12:22:47,914 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-20 12:22:47,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 728 transitions, 12971 flow. Second operand has 29 states, 29 states have (on average 8.551724137931034) internal successors, (248), 29 states have internal predecessors, (248), 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 12:22:47,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:47,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-20 12:22:47,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:53,497 INFO L124 PetriNetUnfolderBase]: 4949/7128 cut-off events. [2024-02-20 12:22:53,497 INFO L125 PetriNetUnfolderBase]: For 39554/39688 co-relation queries the response was YES. [2024-02-20 12:22:53,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64942 conditions, 7128 events. 4949/7128 cut-off events. For 39554/39688 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 39374 event pairs, 70 based on Foata normal form. 10/7130 useless extension candidates. Maximal degree in co-relation 48574. Up to 5790 conditions per place. [2024-02-20 12:22:53,583 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 859 selfloop transitions, 325 changer transitions 10/1197 dead transitions. [2024-02-20 12:22:53,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 1197 transitions, 23338 flow [2024-02-20 12:22:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-02-20 12:22:53,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-02-20 12:22:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 544 transitions. [2024-02-20 12:22:53,586 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40902255639097745 [2024-02-20 12:22:53,587 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 121 predicate places. [2024-02-20 12:22:53,587 INFO L507 AbstractCegarLoop]: Abstraction has has 158 places, 1197 transitions, 23338 flow [2024-02-20 12:22:53,587 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.551724137931034) internal successors, (248), 29 states have internal predecessors, (248), 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 12:22:53,587 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:53,587 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:22:53,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-20 12:22:53,792 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:53,793 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:22:53,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:53,793 INFO L85 PathProgramCache]: Analyzing trace with hash -190554337, now seen corresponding path program 6 times [2024-02-20 12:22:53,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:53,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250260248] [2024-02-20 12:22:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:53,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:53,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250260248] [2024-02-20 12:22:53,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250260248] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738118739] [2024-02-20 12:22:53,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:22:53,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:53,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:53,890 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:22:53,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-20 12:22:53,985 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 12:22:53,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:53,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:22:53,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:54,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:54,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:54,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738118739] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:54,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:54,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-02-20 12:22:54,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979338339] [2024-02-20 12:22:54,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:54,127 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:22:54,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:54,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:22:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:22:54,141 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-20 12:22:54,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 1197 transitions, 23338 flow. Second operand has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 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 12:22:54,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:54,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-20 12:22:54,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:58,324 INFO L124 PetriNetUnfolderBase]: 12287/17596 cut-off events. [2024-02-20 12:22:58,324 INFO L125 PetriNetUnfolderBase]: For 104361/104361 co-relation queries the response was YES. [2024-02-20 12:22:58,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158208 conditions, 17596 events. 12287/17596 cut-off events. For 104361/104361 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 99328 event pairs, 505 based on Foata normal form. 242/17836 useless extension candidates. Maximal degree in co-relation 89900. Up to 12003 conditions per place. [2024-02-20 12:22:58,522 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 1838 selfloop transitions, 482 changer transitions 9/2330 dead transitions. [2024-02-20 12:22:58,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 2330 transitions, 48078 flow [2024-02-20 12:22:58,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-02-20 12:22:58,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-02-20 12:22:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 478 transitions. [2024-02-20 12:22:58,524 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42678571428571427 [2024-02-20 12:22:58,525 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 150 predicate places. [2024-02-20 12:22:58,525 INFO L507 AbstractCegarLoop]: Abstraction has has 187 places, 2330 transitions, 48078 flow [2024-02-20 12:22:58,525 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 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 12:22:58,525 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:58,525 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:22:58,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-20 12:22:58,739 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:58,740 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:22:58,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash -364673256, now seen corresponding path program 1 times [2024-02-20 12:22:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:58,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378068179] [2024-02-20 12:22:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:58,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:58,827 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 12:22:58,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:58,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378068179] [2024-02-20 12:22:58,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378068179] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:58,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873160829] [2024-02-20 12:22:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:58,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:58,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:58,845 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:22:58,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-20 12:22:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:58,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:22:58,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:58,997 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 12:22:58,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:59,041 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 12:22:59,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873160829] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:59,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:59,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-02-20 12:22:59,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009781442] [2024-02-20 12:22:59,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:59,044 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-20 12:22:59,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:59,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-20 12:22:59,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-02-20 12:22:59,082 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-20 12:22:59,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 2330 transitions, 48078 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 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 12:22:59,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:59,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-20 12:22:59,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:03,171 INFO L124 PetriNetUnfolderBase]: 9453/13868 cut-off events. [2024-02-20 12:23:03,172 INFO L125 PetriNetUnfolderBase]: For 125450/125450 co-relation queries the response was YES. [2024-02-20 12:23:03,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137444 conditions, 13868 events. 9453/13868 cut-off events. For 125450/125450 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 79588 event pairs, 149 based on Foata normal form. 694/14560 useless extension candidates. Maximal degree in co-relation 69734. Up to 9585 conditions per place. [2024-02-20 12:23:03,310 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 2165 selfloop transitions, 190 changer transitions 11/2696 dead transitions. [2024-02-20 12:23:03,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 2696 transitions, 61114 flow [2024-02-20 12:23:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 12:23:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 12:23:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-02-20 12:23:03,312 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5190476190476191 [2024-02-20 12:23:03,312 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 155 predicate places. [2024-02-20 12:23:03,313 INFO L507 AbstractCegarLoop]: Abstraction has has 192 places, 2696 transitions, 61114 flow [2024-02-20 12:23:03,313 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 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 12:23:03,313 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:03,313 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:23:03,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-20 12:23:03,524 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-02-20 12:23:03,524 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:23:03,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:03,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1903529853, now seen corresponding path program 7 times [2024-02-20 12:23:03,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:03,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364473199] [2024-02-20 12:23:03,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:03,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:03,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:03,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364473199] [2024-02-20 12:23:03,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364473199] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:03,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284082560] [2024-02-20 12:23:03,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:23:03,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:03,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:03,625 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:23:03,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-20 12:23:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:03,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:23:03,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:03,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:03,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284082560] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:03,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:03,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-20 12:23:03,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170038354] [2024-02-20 12:23:03,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:03,839 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 12:23:03,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:03,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 12:23:03,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-02-20 12:23:03,854 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-20 12:23:03,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 2696 transitions, 61114 flow. Second operand has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 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 12:23:03,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:03,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-20 12:23:03,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:08,091 INFO L124 PetriNetUnfolderBase]: 8129/12044 cut-off events. [2024-02-20 12:23:08,091 INFO L125 PetriNetUnfolderBase]: For 124849/124849 co-relation queries the response was YES. [2024-02-20 12:23:08,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129782 conditions, 12044 events. 8129/12044 cut-off events. For 124849/124849 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 68537 event pairs, 123 based on Foata normal form. 284/12326 useless extension candidates. Maximal degree in co-relation 75294. Up to 8429 conditions per place. [2024-02-20 12:23:08,216 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 2020 selfloop transitions, 150 changer transitions 77/2426 dead transitions. [2024-02-20 12:23:08,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 2426 transitions, 59496 flow [2024-02-20 12:23:08,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:23:08,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:23:08,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-02-20 12:23:08,217 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-02-20 12:23:08,218 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 160 predicate places. [2024-02-20 12:23:08,218 INFO L507 AbstractCegarLoop]: Abstraction has has 197 places, 2426 transitions, 59496 flow [2024-02-20 12:23:08,218 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 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 12:23:08,218 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:08,219 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:23:08,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-02-20 12:23:08,419 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:08,419 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:23:08,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash -148484861, now seen corresponding path program 8 times [2024-02-20 12:23:08,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:08,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753368593] [2024-02-20 12:23:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:08,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:08,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:08,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753368593] [2024-02-20 12:23:08,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753368593] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:08,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129320469] [2024-02-20 12:23:08,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:23:08,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:08,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:08,496 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:23:08,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-20 12:23:08,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:23:08,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:08,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-20 12:23:08,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:08,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:23:08,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129320469] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:08,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:08,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-20 12:23:08,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917519162] [2024-02-20 12:23:08,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:08,785 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 12:23:08,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:08,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 12:23:08,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-02-20 12:23:08,816 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-20 12:23:08,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 2426 transitions, 59496 flow. Second operand has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 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 12:23:08,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:08,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-20 12:23:08,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:12,514 INFO L124 PetriNetUnfolderBase]: 6969/10405 cut-off events. [2024-02-20 12:23:12,514 INFO L125 PetriNetUnfolderBase]: For 126067/126067 co-relation queries the response was YES. [2024-02-20 12:23:12,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120740 conditions, 10405 events. 6969/10405 cut-off events. For 126067/126067 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 58607 event pairs, 119 based on Foata normal form. 276/10679 useless extension candidates. Maximal degree in co-relation 80924. Up to 7339 conditions per place. [2024-02-20 12:23:12,626 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 984 selfloop transitions, 3 changer transitions 1111/2233 dead transitions. [2024-02-20 12:23:12,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 2233 transitions, 59035 flow [2024-02-20 12:23:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:23:12,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:23:12,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-02-20 12:23:12,628 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2024-02-20 12:23:12,628 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 166 predicate places. [2024-02-20 12:23:12,628 INFO L507 AbstractCegarLoop]: Abstraction has has 203 places, 2233 transitions, 59035 flow [2024-02-20 12:23:12,629 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 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 12:23:12,629 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:12,629 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:23:12,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-02-20 12:23:12,829 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-02-20 12:23:12,830 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:23:12,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:12,830 INFO L85 PathProgramCache]: Analyzing trace with hash 143563994, now seen corresponding path program 9 times [2024-02-20 12:23:12,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:12,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817286903] [2024-02-20 12:23:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:12,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:23:13,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:13,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817286903] [2024-02-20 12:23:13,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817286903] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:13,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227094634] [2024-02-20 12:23:13,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:23:13,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:13,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:13,076 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:23:13,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-20 12:23:13,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-02-20 12:23:13,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:13,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:23:13,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:23:13,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:23:13,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227094634] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:13,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:13,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-02-20 12:23:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523648955] [2024-02-20 12:23:13,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:13,328 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:23:13,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:23:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:23:13,361 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-20 12:23:13,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 2233 transitions, 59035 flow. Second operand has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 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 12:23:13,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:13,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-20 12:23:13,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:18,714 INFO L124 PetriNetUnfolderBase]: 9908/14598 cut-off events. [2024-02-20 12:23:18,715 INFO L125 PetriNetUnfolderBase]: For 190824/190824 co-relation queries the response was YES. [2024-02-20 12:23:18,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184304 conditions, 14598 events. 9908/14598 cut-off events. For 190824/190824 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 81471 event pairs, 117 based on Foata normal form. 32/14628 useless extension candidates. Maximal degree in co-relation 140570. Up to 10578 conditions per place. [2024-02-20 12:23:18,861 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 1646 selfloop transitions, 400 changer transitions 1111/3274 dead transitions. [2024-02-20 12:23:18,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 3274 transitions, 92805 flow [2024-02-20 12:23:18,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-20 12:23:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-20 12:23:18,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 279 transitions. [2024-02-20 12:23:18,863 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4689075630252101 [2024-02-20 12:23:18,863 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 182 predicate places. [2024-02-20 12:23:18,863 INFO L507 AbstractCegarLoop]: Abstraction has has 219 places, 3274 transitions, 92805 flow [2024-02-20 12:23:18,864 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 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 12:23:18,864 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:18,864 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:23:18,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-02-20 12:23:19,075 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-02-20 12:23:19,076 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:23:19,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:19,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2117307316, now seen corresponding path program 10 times [2024-02-20 12:23:19,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:19,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448906300] [2024-02-20 12:23:19,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:19,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:23:19,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:19,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448906300] [2024-02-20 12:23:19,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448906300] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:19,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468487778] [2024-02-20 12:23:19,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:23:19,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:19,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:19,197 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:23:19,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-20 12:23:19,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:23:19,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:19,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:23:19,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:19,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:19,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:19,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468487778] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:19,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:19,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2024-02-20 12:23:19,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265332095] [2024-02-20 12:23:19,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:19,453 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 12:23:19,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:19,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 12:23:19,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-02-20 12:23:19,474 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-20 12:23:19,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 3274 transitions, 92805 flow. Second operand has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 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 12:23:19,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:19,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-20 12:23:19,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:33,010 INFO L124 PetriNetUnfolderBase]: 14413/20975 cut-off events. [2024-02-20 12:23:33,010 INFO L125 PetriNetUnfolderBase]: For 276567/276567 co-relation queries the response was YES. [2024-02-20 12:23:33,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291036 conditions, 20975 events. 14413/20975 cut-off events. For 276567/276567 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 120596 event pairs, 77 based on Foata normal form. 34/21007 useless extension candidates. Maximal degree in co-relation 243588. Up to 15787 conditions per place. [2024-02-20 12:23:33,276 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 2638 selfloop transitions, 1187 changer transitions 1118/4944 dead transitions. [2024-02-20 12:23:33,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 4944 transitions, 148501 flow [2024-02-20 12:23:33,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-02-20 12:23:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-02-20 12:23:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 681 transitions. [2024-02-20 12:23:33,279 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39708454810495625 [2024-02-20 12:23:33,279 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 230 predicate places. [2024-02-20 12:23:33,279 INFO L507 AbstractCegarLoop]: Abstraction has has 267 places, 4944 transitions, 148501 flow [2024-02-20 12:23:33,280 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 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 12:23:33,280 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:33,280 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:23:33,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-20 12:23:33,491 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-02-20 12:23:33,492 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:23:33,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:33,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1267745596, now seen corresponding path program 11 times [2024-02-20 12:23:33,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:33,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820319065] [2024-02-20 12:23:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:33,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:23:33,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:33,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820319065] [2024-02-20 12:23:33,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820319065] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:33,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727036787] [2024-02-20 12:23:33,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:23:33,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:33,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:33,641 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:23:33,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-20 12:23:33,753 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:23:33,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:33,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:23:33,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:33,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:33,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:33,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727036787] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:33,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:33,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-02-20 12:23:33,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014816361] [2024-02-20 12:23:33,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:33,924 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 12:23:33,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:33,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 12:23:33,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:23:33,947 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-20 12:23:33,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 4944 transitions, 148501 flow. Second operand has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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 12:23:33,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:33,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-20 12:23:33,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:58,664 INFO L124 PetriNetUnfolderBase]: 17835/25722 cut-off events. [2024-02-20 12:23:58,664 INFO L125 PetriNetUnfolderBase]: For 335325/335325 co-relation queries the response was YES. [2024-02-20 12:23:58,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384315 conditions, 25722 events. 17835/25722 cut-off events. For 335325/335325 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 150345 event pairs, 93 based on Foata normal form. 34/25754 useless extension candidates. Maximal degree in co-relation 333172. Up to 20055 conditions per place. [2024-02-20 12:23:58,999 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 3381 selfloop transitions, 1658 changer transitions 1118/6158 dead transitions. [2024-02-20 12:23:58,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 6158 transitions, 196647 flow [2024-02-20 12:23:58,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-02-20 12:23:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-02-20 12:23:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 1047 transitions. [2024-02-20 12:23:59,001 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39360902255639096 [2024-02-20 12:23:59,002 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 305 predicate places. [2024-02-20 12:23:59,002 INFO L507 AbstractCegarLoop]: Abstraction has has 342 places, 6158 transitions, 196647 flow [2024-02-20 12:23:59,002 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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 12:23:59,002 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:59,002 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:23:59,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-02-20 12:23:59,203 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-02-20 12:23:59,203 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:23:59,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:59,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1012437900, now seen corresponding path program 12 times [2024-02-20 12:23:59,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:59,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329696120] [2024-02-20 12:23:59,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:59,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:23:59,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:59,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329696120] [2024-02-20 12:23:59,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329696120] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:59,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009900513] [2024-02-20 12:23:59,428 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:23:59,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:59,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:59,430 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:23:59,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-20 12:23:59,550 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-20 12:23:59,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:59,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:23:59,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:59,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:59,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009900513] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:59,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:59,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-02-20 12:23:59,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920885073] [2024-02-20 12:23:59,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:59,703 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:23:59,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:59,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:23:59,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:23:59,754 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-20 12:23:59,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 6158 transitions, 196647 flow. Second operand has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 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 12:23:59,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:59,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-20 12:23:59,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:24:36,023 INFO L124 PetriNetUnfolderBase]: 19926/28760 cut-off events. [2024-02-20 12:24:36,023 INFO L125 PetriNetUnfolderBase]: For 400354/400354 co-relation queries the response was YES. [2024-02-20 12:24:36,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458935 conditions, 28760 events. 19926/28760 cut-off events. For 400354/400354 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 171519 event pairs, 99 based on Foata normal form. 32/28790 useless extension candidates. Maximal degree in co-relation 389621. Up to 22044 conditions per place. [2024-02-20 12:24:36,517 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 4007 selfloop transitions, 1599 changer transitions 1545/7152 dead transitions. [2024-02-20 12:24:36,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 7152 transitions, 242554 flow [2024-02-20 12:24:36,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-02-20 12:24:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-02-20 12:24:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 740 transitions. [2024-02-20 12:24:36,519 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4065934065934066 [2024-02-20 12:24:36,519 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 356 predicate places. [2024-02-20 12:24:36,520 INFO L507 AbstractCegarLoop]: Abstraction has has 393 places, 7152 transitions, 242554 flow [2024-02-20 12:24:36,520 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 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 12:24:36,520 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:24:36,520 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:24:36,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-20 12:24:36,731 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:36,732 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:24:36,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:24:36,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1077071518, now seen corresponding path program 13 times [2024-02-20 12:24:36,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:24:36,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832069123] [2024-02-20 12:24:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:24:36,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:24:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:24:36,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:24:36,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832069123] [2024-02-20 12:24:36,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832069123] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:24:36,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304510106] [2024-02-20 12:24:36,815 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:24:36,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:36,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:24:36,816 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:24:36,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-20 12:24:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:36,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:24:36,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:24:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:24:37,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:24:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:24:37,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304510106] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:24:37,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:24:37,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-02-20 12:24:37,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529096672] [2024-02-20 12:24:37,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:24:37,094 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:24:37,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:24:37,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:24:37,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:24:37,141 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-20 12:24:37,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 7152 transitions, 242554 flow. Second operand has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 19 states have internal predecessors, (158), 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 12:24:37,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:24:37,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-20 12:24:37,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:25:17,799 INFO L124 PetriNetUnfolderBase]: 20535/29655 cut-off events. [2024-02-20 12:25:17,800 INFO L125 PetriNetUnfolderBase]: For 438395/438395 co-relation queries the response was YES. [2024-02-20 12:25:17,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500513 conditions, 29655 events. 20535/29655 cut-off events. For 438395/438395 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 177919 event pairs, 95 based on Foata normal form. 34/29687 useless extension candidates. Maximal degree in co-relation 426934. Up to 22831 conditions per place. [2024-02-20 12:25:18,254 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 4268 selfloop transitions, 1161 changer transitions 1545/7403 dead transitions. [2024-02-20 12:25:18,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 7403 transitions, 265248 flow [2024-02-20 12:25:18,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-02-20 12:25:18,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-02-20 12:25:18,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 300 transitions. [2024-02-20 12:25:18,256 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-02-20 12:25:18,256 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 373 predicate places. [2024-02-20 12:25:18,257 INFO L507 AbstractCegarLoop]: Abstraction has has 410 places, 7403 transitions, 265248 flow [2024-02-20 12:25:18,257 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 19 states have internal predecessors, (158), 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 12:25:18,257 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:25:18,257 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:25:18,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-02-20 12:25:18,468 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-20 12:25:18,469 INFO L432 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:25:18,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:25:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1986985902, now seen corresponding path program 14 times [2024-02-20 12:25:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:25:18,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253073157] [2024-02-20 12:25:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:25:18,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:25:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:25:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:25:18,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:25:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253073157] [2024-02-20 12:25:18,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253073157] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:25:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90848212] [2024-02-20 12:25:18,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:25:18,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:25:18,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:25:18,588 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:25:18,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-20 12:25:18,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:25:18,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:25:18,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:25:18,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:25:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:25:18,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:25:18,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:25:18,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90848212] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:25:18,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:25:18,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-02-20 12:25:18,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973536191] [2024-02-20 12:25:18,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:25:18,899 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-20 12:25:18,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:25:18,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-20 12:25:18,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-02-20 12:25:18,938 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-20 12:25:18,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 7403 transitions, 265248 flow. Second operand has 20 states, 20 states have (on average 8.35) internal successors, (167), 20 states have internal predecessors, (167), 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 12:25:18,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:25:18,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-20 12:25:18,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:26:16,239 INFO L124 PetriNetUnfolderBase]: 24647/35540 cut-off events. [2024-02-20 12:26:16,239 INFO L125 PetriNetUnfolderBase]: For 572619/572619 co-relation queries the response was YES. [2024-02-20 12:26:16,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632681 conditions, 35540 events. 24647/35540 cut-off events. For 572619/572619 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 217793 event pairs, 107 based on Foata normal form. 34/35572 useless extension candidates. Maximal degree in co-relation 553900. Up to 27919 conditions per place. [2024-02-20 12:26:16,783 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 5059 selfloop transitions, 1658 changer transitions 1545/8691 dead transitions. [2024-02-20 12:26:16,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 8691 transitions, 329054 flow [2024-02-20 12:26:16,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-02-20 12:26:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-02-20 12:26:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 560 transitions. [2024-02-20 12:26:16,785 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-02-20 12:26:16,785 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 405 predicate places. [2024-02-20 12:26:16,785 INFO L507 AbstractCegarLoop]: Abstraction has has 442 places, 8691 transitions, 329054 flow [2024-02-20 12:26:16,785 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.35) internal successors, (167), 20 states have internal predecessors, (167), 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 12:26:16,785 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:26:16,785 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:26:16,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-02-20 12:26:16,986 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:26:16,986 INFO L432 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:26:16,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:26:16,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2052673698, now seen corresponding path program 15 times [2024-02-20 12:26:16,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:26:16,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168125849] [2024-02-20 12:26:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:26:16,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:26:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:26:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:26:17,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:26:17,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168125849] [2024-02-20 12:26:17,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168125849] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:26:17,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555801329] [2024-02-20 12:26:17,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:26:17,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:26:17,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:26:17,097 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:26:17,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-20 12:26:17,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:26:17,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:26:17,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:26:17,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:26:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:26:17,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:26:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:26:17,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555801329] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:26:17,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:26:17,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-02-20 12:26:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809266468] [2024-02-20 12:26:17,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:26:17,435 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-20 12:26:17,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:26:17,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-20 12:26:17,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-02-20 12:26:17,475 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-20 12:26:17,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 8691 transitions, 329054 flow. Second operand has 21 states, 21 states have (on average 8.19047619047619) internal successors, (172), 21 states have internal predecessors, (172), 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 12:26:17,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:26:17,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-20 12:26:17,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:27:48,252 INFO L124 PetriNetUnfolderBase]: 30840/44278 cut-off events. [2024-02-20 12:27:48,253 INFO L125 PetriNetUnfolderBase]: For 727104/727104 co-relation queries the response was YES. [2024-02-20 12:27:48,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828292 conditions, 44278 events. 30840/44278 cut-off events. For 727104/727104 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 274698 event pairs, 103 based on Foata normal form. 32/44308 useless extension candidates. Maximal degree in co-relation 742698. Up to 35256 conditions per place. [2024-02-20 12:27:48,944 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 6221 selfloop transitions, 1702 changer transitions 1545/9897 dead transitions. [2024-02-20 12:27:48,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 9897 transitions, 394396 flow [2024-02-20 12:27:48,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-02-20 12:27:48,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-02-20 12:27:48,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 465 transitions. [2024-02-20 12:27:48,946 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-02-20 12:27:48,946 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 431 predicate places. [2024-02-20 12:27:48,946 INFO L507 AbstractCegarLoop]: Abstraction has has 468 places, 9897 transitions, 394396 flow [2024-02-20 12:27:48,946 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.19047619047619) internal successors, (172), 21 states have internal predecessors, (172), 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 12:27:48,946 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:27:48,947 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:27:48,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-02-20 12:27:49,151 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:27:49,152 INFO L432 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:27:49,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:27:49,152 INFO L85 PathProgramCache]: Analyzing trace with hash -589697472, now seen corresponding path program 16 times [2024-02-20 12:27:49,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:27:49,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315111392] [2024-02-20 12:27:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:27:49,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:27:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:27:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:27:49,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:27:49,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315111392] [2024-02-20 12:27:49,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315111392] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:27:49,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795546389] [2024-02-20 12:27:49,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:27:49,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:27:49,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:27:49,240 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:27:49,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-20 12:27:49,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:27:49,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:27:49,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:27:49,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:27:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:27:49,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:27:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:27:49,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795546389] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:27:49,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:27:49,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-02-20 12:27:49,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129236497] [2024-02-20 12:27:49,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:27:49,503 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 12:27:49,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:27:49,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 12:27:49,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:27:49,519 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-20 12:27:49,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 9897 transitions, 394396 flow. Second operand has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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 12:27:49,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:27:49,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-20 12:27:49,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:30:31,358 INFO L124 PetriNetUnfolderBase]: 37862/54052 cut-off events. [2024-02-20 12:30:31,358 INFO L125 PetriNetUnfolderBase]: For 864955/864955 co-relation queries the response was YES. [2024-02-20 12:30:31,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1065192 conditions, 54052 events. 37862/54052 cut-off events. For 864955/864955 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 338418 event pairs, 111 based on Foata normal form. 34/54084 useless extension candidates. Maximal degree in co-relation 972475. Up to 43660 conditions per place. [2024-02-20 12:30:32,596 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 7274 selfloop transitions, 2914 changer transitions 1545/11734 dead transitions. [2024-02-20 12:30:32,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 11734 transitions, 485628 flow [2024-02-20 12:30:32,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-02-20 12:30:32,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2024-02-20 12:30:32,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1454 transitions. [2024-02-20 12:30:32,599 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39191374663072776 [2024-02-20 12:30:32,599 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 536 predicate places. [2024-02-20 12:30:32,599 INFO L507 AbstractCegarLoop]: Abstraction has has 573 places, 11734 transitions, 485628 flow [2024-02-20 12:30:32,600 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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 12:30:32,600 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:30:32,600 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:30:32,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-02-20 12:30:32,812 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:30:32,812 INFO L432 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:30:32,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:30:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash -845005168, now seen corresponding path program 17 times [2024-02-20 12:30:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:30:32,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196597893] [2024-02-20 12:30:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:30:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:30:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:30:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:30:32,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:30:32,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196597893] [2024-02-20 12:30:32,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196597893] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:30:32,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804704876] [2024-02-20 12:30:32,917 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:30:32,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:30:32,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:30:32,933 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:30:33,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-20 12:30:33,119 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:30:33,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:30:33,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:30:33,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:30:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:30:33,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:30:33,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:30:33,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804704876] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:30:33,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:30:33,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-02-20 12:30:33,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021785246] [2024-02-20 12:30:33,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:30:33,273 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:30:33,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:30:33,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:30:33,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:30:33,308 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-20 12:30:33,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 11734 transitions, 485628 flow. Second operand has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 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 12:30:33,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:30:33,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-20 12:30:33,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:34:22,957 INFO L124 PetriNetUnfolderBase]: 45145/64099 cut-off events. [2024-02-20 12:34:22,958 INFO L125 PetriNetUnfolderBase]: For 968979/968979 co-relation queries the response was YES. [2024-02-20 12:34:23,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327799 conditions, 64099 events. 45145/64099 cut-off events. For 968979/968979 co-relation queries the response was YES. Maximal size of possible extension queue 1569. Compared 404691 event pairs, 103 based on Foata normal form. 32/64129 useless extension candidates. Maximal degree in co-relation 1227914. Up to 52381 conditions per place. [2024-02-20 12:34:24,400 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 8213 selfloop transitions, 3846 changer transitions 1545/13605 dead transitions. [2024-02-20 12:34:24,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 13605 transitions, 587289 flow [2024-02-20 12:34:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-02-20 12:34:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2024-02-20 12:34:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 1676 transitions. [2024-02-20 12:34:24,404 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39574970484061395 [2024-02-20 12:34:24,404 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 653 predicate places. [2024-02-20 12:34:24,404 INFO L507 AbstractCegarLoop]: Abstraction has has 690 places, 13605 transitions, 587289 flow [2024-02-20 12:34:24,404 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 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 12:34:24,404 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:34:24,405 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:34:24,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-02-20 12:34:24,617 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:34:24,617 INFO L432 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:34:24,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:34:24,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1694461372, now seen corresponding path program 2 times [2024-02-20 12:34:24,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:34:24,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081945188] [2024-02-20 12:34:24,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:34:24,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:34:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:34:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:34:26,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:34:26,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081945188] [2024-02-20 12:34:26,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081945188] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:34:26,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603544573] [2024-02-20 12:34:26,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:34:26,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:34:26,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:34:26,457 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:34:26,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-20 12:34:26,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:34:26,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:34:26,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 41 conjunts are in the unsatisfiable core [2024-02-20 12:34:26,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:34:26,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:34:28,023 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:34:28,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 152 treesize of output 98 [2024-02-20 12:34:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:34:28,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:34:42,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1016 treesize of output 912 [2024-02-20 12:34:44,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:34:44,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 1393 treesize of output 2031 Killed by 15