./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/chl-poker-hand-symm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/chl-poker-hand-symm.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:06:32,655 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:06:32,712 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:06:32,715 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:06:32,717 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:06:32,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:06:32,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:06:32,735 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:06:32,736 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:06:32,739 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:06:32,739 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:06:32,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:06:32,739 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:06:32,740 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:06:32,741 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:06:32,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:06:32,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:06:32,742 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:06:32,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:06:32,742 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:06:32,743 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:06:32,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:06:32,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:06:32,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:06:32,744 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:06:32,744 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:06:32,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:06:32,744 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:06:32,745 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:06:32,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:06:32,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:06:32,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:06:32,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:06:32,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:06:32,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:06:32,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:06:32,747 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:06:32,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:06:32,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:06:32,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:06:32,747 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:06:32,748 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:06:32,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:06:32,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:06:33,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:06:33,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:06:33,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:06:33,121 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:06:33,122 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:06:33,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-28 01:06:34,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:06:34,209 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:06:34,215 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-28 01:06:34,222 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b428bd8e4/a0d63b07608546d68421237e0c98d225/FLAG53b232d42 [2024-06-28 01:06:34,231 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b428bd8e4/a0d63b07608546d68421237e0c98d225 [2024-06-28 01:06:34,233 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:06:34,233 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:06:34,234 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/chl-poker-hand-symm.wvr.yml/witness.yml [2024-06-28 01:06:34,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:06:34,304 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:06:34,306 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:06:34,306 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:06:34,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:06:34,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:06:34" (1/2) ... [2024-06-28 01:06:34,311 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466903e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:34, skipping insertion in model container [2024-06-28 01:06:34,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:06:34" (1/2) ... [2024-06-28 01:06:34,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@53bce4de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:34, skipping insertion in model container [2024-06-28 01:06:34,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:34" (2/2) ... [2024-06-28 01:06:34,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466903e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34, skipping insertion in model container [2024-06-28 01:06:34,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:34" (2/2) ... [2024-06-28 01:06:34,315 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:06:34,339 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:06:34,340 INFO L97 edCorrectnessWitness]: Location invariant before [L231-L231] ((((! multithreaded || i2_16 == 0) && (! multithreaded || (((0 <= i1_9 && 0 <= i1_14) && i2_11 == 0) && i2_16 == 0))) && (! multithreaded || i2_11 == 0)) && (! multithreaded || 0 <= i1_14)) && (! multithreaded || 0 <= i1_9) [2024-06-28 01:06:34,340 INFO L97 edCorrectnessWitness]: Location invariant before [L230-L230] ((((! multithreaded || i2_16 == 0) && (! multithreaded || (((0 <= i1_9 && 0 <= i1_14) && i2_11 == 0) && i2_16 == 0))) && (! multithreaded || i2_11 == 0)) && (! multithreaded || 0 <= i1_14)) && (! multithreaded || 0 <= i1_9) [2024-06-28 01:06:34,340 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:06:34,340 INFO L106 edCorrectnessWitness]: ghost_update [L229-L229] multithreaded = 1; [2024-06-28 01:06:34,372 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:06:34,605 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-06-28 01:06:34,626 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:06:34,637 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:06:34,768 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-06-28 01:06:34,771 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:06:34,783 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:06:34,784 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34 WrapperNode [2024-06-28 01:06:34,784 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:06:34,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:06:34,785 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:06:34,785 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:06:34,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34" (1/1) ... [2024-06-28 01:06:34,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34" (1/1) ... [2024-06-28 01:06:34,901 INFO L138 Inliner]: procedures = 24, calls = 297, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1564 [2024-06-28 01:06:34,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:06:34,905 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:06:34,905 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:06:34,905 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:06:34,933 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34" (1/1) ... [2024-06-28 01:06:34,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34" (1/1) ... [2024-06-28 01:06:34,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34" (1/1) ... [2024-06-28 01:06:34,987 INFO L175 MemorySlicer]: Split 186 memory accesses to 2 slices as follows [2, 184]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-06-28 01:06:34,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34" (1/1) ... [2024-06-28 01:06:34,988 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34" (1/1) ... [2024-06-28 01:06:35,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34" (1/1) ... [2024-06-28 01:06:35,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34" (1/1) ... [2024-06-28 01:06:35,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34" (1/1) ... [2024-06-28 01:06:35,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34" (1/1) ... [2024-06-28 01:06:35,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:06:35,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:06:35,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:06:35,058 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:06:35,058 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34" (1/1) ... [2024-06-28 01:06:35,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:06:35,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:35,082 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) [2024-06-28 01:06:35,099 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 [2024-06-28 01:06:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:06:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-28 01:06:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-28 01:06:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-28 01:06:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-28 01:06:35,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:06:35,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:06:35,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:06:35,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:06:35,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:06:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:06:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-28 01:06:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:06:35,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:06:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:06:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:06:35,125 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:06:35,308 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:06:35,310 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:06:36,498 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:06:36,499 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:06:37,676 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:06:37,676 INFO L320 CfgBuilder]: Removed 12 assume(true) statements. [2024-06-28 01:06:37,677 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:06:37 BoogieIcfgContainer [2024-06-28 01:06:37,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:06:37,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:06:37,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:06:37,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:06:37,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:06:34" (1/4) ... [2024-06-28 01:06:37,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eeed0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:06:37, skipping insertion in model container [2024-06-28 01:06:37,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:34" (2/4) ... [2024-06-28 01:06:37,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eeed0d4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:06:37, skipping insertion in model container [2024-06-28 01:06:37,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:34" (3/4) ... [2024-06-28 01:06:37,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eeed0d4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:06:37, skipping insertion in model container [2024-06-28 01:06:37,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:06:37" (4/4) ... [2024-06-28 01:06:37,688 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-06-28 01:06:37,704 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:06:37,705 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 01:06:37,705 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:06:37,898 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-28 01:06:37,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 99 transitions, 212 flow [2024-06-28 01:06:38,058 INFO L124 PetriNetUnfolderBase]: 28/97 cut-off events. [2024-06-28 01:06:38,059 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-28 01:06:38,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 97 events. 28/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 252 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2024-06-28 01:06:38,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 99 transitions, 212 flow [2024-06-28 01:06:38,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 96 transitions, 204 flow [2024-06-28 01:06:38,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:06:38,075 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@61279e7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:06:38,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-28 01:06:38,081 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:06:38,081 INFO L124 PetriNetUnfolderBase]: 8/23 cut-off events. [2024-06-28 01:06:38,081 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:06:38,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:38,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:38,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:06:38,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:38,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1172158999, now seen corresponding path program 1 times [2024-06-28 01:06:38,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:38,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112434805] [2024-06-28 01:06:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:38,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:38,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:38,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112434805] [2024-06-28 01:06:38,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112434805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:38,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:38,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:06:38,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734437425] [2024-06-28 01:06:38,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:38,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:06:38,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:38,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:06:38,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:06:38,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:06:38,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 96 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-06-28 01:06:38,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:38,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:06:38,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:39,538 INFO L124 PetriNetUnfolderBase]: 2533/3813 cut-off events. [2024-06-28 01:06:39,538 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-06-28 01:06:39,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7688 conditions, 3813 events. 2533/3813 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18266 event pairs, 1725 based on Foata normal form. 0/2998 useless extension candidates. Maximal degree in co-relation 7497. Up to 3793 conditions per place. [2024-06-28 01:06:39,555 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 83 selfloop transitions, 8 changer transitions 0/96 dead transitions. [2024-06-28 01:06:39,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 386 flow [2024-06-28 01:06:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:06:39,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:06:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-06-28 01:06:39,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-28 01:06:39,565 INFO L175 Difference]: Start difference. First operand has 75 places, 96 transitions, 204 flow. Second operand 3 states and 120 transitions. [2024-06-28 01:06:39,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 386 flow [2024-06-28 01:06:39,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 378 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:06:39,571 INFO L231 Difference]: Finished difference. Result has 74 places, 96 transitions, 230 flow [2024-06-28 01:06:39,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=74, PETRI_TRANSITIONS=96} [2024-06-28 01:06:39,575 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-06-28 01:06:39,575 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 96 transitions, 230 flow [2024-06-28 01:06:39,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-06-28 01:06:39,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:39,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:39,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:06:39,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:06:39,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash -192027891, now seen corresponding path program 1 times [2024-06-28 01:06:39,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:39,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815170935] [2024-06-28 01:06:39,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:39,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-28 01:06:39,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:39,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815170935] [2024-06-28 01:06:39,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815170935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:39,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:39,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:06:39,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514657029] [2024-06-28 01:06:39,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:39,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:06:39,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:39,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:06:39,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:06:39,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-28 01:06:39,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 96 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-06-28 01:06:39,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:39,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-28 01:06:39,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:41,147 INFO L124 PetriNetUnfolderBase]: 4100/6179 cut-off events. [2024-06-28 01:06:41,147 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-06-28 01:06:41,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12400 conditions, 6179 events. 4100/6179 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 31930 event pairs, 1937 based on Foata normal form. 576/5537 useless extension candidates. Maximal degree in co-relation 12351. Up to 3696 conditions per place. [2024-06-28 01:06:41,175 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 159 selfloop transitions, 3 changer transitions 0/165 dead transitions. [2024-06-28 01:06:41,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 165 transitions, 695 flow [2024-06-28 01:06:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:06:41,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:06:41,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-06-28 01:06:41,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892255892255892 [2024-06-28 01:06:41,177 INFO L175 Difference]: Start difference. First operand has 74 places, 96 transitions, 230 flow. Second operand 3 states and 175 transitions. [2024-06-28 01:06:41,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 165 transitions, 695 flow [2024-06-28 01:06:41,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 165 transitions, 687 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:41,180 INFO L231 Difference]: Finished difference. Result has 76 places, 98 transitions, 243 flow [2024-06-28 01:06:41,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=76, PETRI_TRANSITIONS=98} [2024-06-28 01:06:41,181 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2024-06-28 01:06:41,181 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 98 transitions, 243 flow [2024-06-28 01:06:41,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-06-28 01:06:41,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:41,182 INFO L208 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] [2024-06-28 01:06:41,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:06:41,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:06:41,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:41,183 INFO L85 PathProgramCache]: Analyzing trace with hash -607312445, now seen corresponding path program 1 times [2024-06-28 01:06:41,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:41,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284240649] [2024-06-28 01:06:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:41,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-28 01:06:41,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:41,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284240649] [2024-06-28 01:06:41,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284240649] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:06:41,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691643398] [2024-06-28 01:06:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:41,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:41,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:41,343 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) [2024-06-28 01:06:41,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-28 01:06:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:41,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 4 conjunts are in the unsatisfiable core [2024-06-28 01:06:41,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:06:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-28 01:06:41,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-28 01:06:41,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691643398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:41,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-28 01:06:41,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-06-28 01:06:41,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826281217] [2024-06-28 01:06:41,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:41,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:06:41,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:41,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:06:41,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:06:41,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:06:41,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 98 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-06-28 01:06:41,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:41,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:06:41,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:42,774 INFO L124 PetriNetUnfolderBase]: 3685/5643 cut-off events. [2024-06-28 01:06:42,775 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-06-28 01:06:42,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11699 conditions, 5643 events. 3685/5643 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 29257 event pairs, 2578 based on Foata normal form. 1/4465 useless extension candidates. Maximal degree in co-relation 11642. Up to 5602 conditions per place. [2024-06-28 01:06:42,795 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 89 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2024-06-28 01:06:42,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 445 flow [2024-06-28 01:06:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:06:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:06:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-28 01:06:42,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-28 01:06:42,797 INFO L175 Difference]: Start difference. First operand has 76 places, 98 transitions, 243 flow. Second operand 3 states and 116 transitions. [2024-06-28 01:06:42,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 445 flow [2024-06-28 01:06:42,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:42,800 INFO L231 Difference]: Finished difference. Result has 78 places, 102 transitions, 284 flow [2024-06-28 01:06:42,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=78, PETRI_TRANSITIONS=102} [2024-06-28 01:06:42,800 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-06-28 01:06:42,801 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 102 transitions, 284 flow [2024-06-28 01:06:42,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-06-28 01:06:42,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:42,801 INFO L208 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] [2024-06-28 01:06:42,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-28 01:06:43,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:43,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:06:43,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:43,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1090217925, now seen corresponding path program 1 times [2024-06-28 01:06:43,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:43,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346734722] [2024-06-28 01:06:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:43,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-06-28 01:06:43,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:43,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346734722] [2024-06-28 01:06:43,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346734722] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:06:43,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110865306] [2024-06-28 01:06:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:43,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:43,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:43,146 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) [2024-06-28 01:06:43,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-28 01:06:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:43,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-28 01:06:43,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:06:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-06-28 01:06:43,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:06:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-06-28 01:06:43,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110865306] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:06:43,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:06:43,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-06-28 01:06:43,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153769040] [2024-06-28 01:06:43,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:06:43,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:06:43,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:43,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:06:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:06:43,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:06:43,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 102 transitions, 284 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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) [2024-06-28 01:06:43,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:43,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:06:43,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:44,801 INFO L124 PetriNetUnfolderBase]: 3685/5659 cut-off events. [2024-06-28 01:06:44,801 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-06-28 01:06:44,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11666 conditions, 5659 events. 3685/5659 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 29243 event pairs, 2578 based on Foata normal form. 10/4493 useless extension candidates. Maximal degree in co-relation 11568. Up to 5598 conditions per place. [2024-06-28 01:06:44,826 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 81 selfloop transitions, 32 changer transitions 0/118 dead transitions. [2024-06-28 01:06:44,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 118 transitions, 574 flow [2024-06-28 01:06:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:06:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:06:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 01:06:44,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23106060606060605 [2024-06-28 01:06:44,830 INFO L175 Difference]: Start difference. First operand has 78 places, 102 transitions, 284 flow. Second operand 8 states and 183 transitions. [2024-06-28 01:06:44,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 118 transitions, 574 flow [2024-06-28 01:06:44,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 118 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:44,835 INFO L231 Difference]: Finished difference. Result has 87 places, 118 transitions, 462 flow [2024-06-28 01:06:44,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=462, PETRI_PLACES=87, PETRI_TRANSITIONS=118} [2024-06-28 01:06:44,837 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 12 predicate places. [2024-06-28 01:06:44,837 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 118 transitions, 462 flow [2024-06-28 01:06:44,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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) [2024-06-28 01:06:44,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:44,838 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:44,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-28 01:06:45,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-06-28 01:06:45,047 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:06:45,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:45,048 INFO L85 PathProgramCache]: Analyzing trace with hash -190827169, now seen corresponding path program 2 times [2024-06-28 01:06:45,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:45,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663165689] [2024-06-28 01:06:45,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:45,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-06-28 01:06:45,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:45,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663165689] [2024-06-28 01:06:45,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663165689] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:06:45,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109570816] [2024-06-28 01:06:45,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-28 01:06:45,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:45,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:45,302 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) [2024-06-28 01:06:45,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-28 01:06:45,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-28 01:06:45,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:06:45,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-28 01:06:45,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:06:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-06-28 01:06:45,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-28 01:06:45,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109570816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:45,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-28 01:06:45,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-06-28 01:06:45,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312806355] [2024-06-28 01:06:45,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:45,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:06:45,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:45,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:06:45,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:06:45,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-28 01:06:45,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 118 transitions, 462 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-06-28 01:06:45,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:45,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-28 01:06:45,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:46,971 INFO L124 PetriNetUnfolderBase]: 3620/5542 cut-off events. [2024-06-28 01:06:46,972 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2024-06-28 01:06:46,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11443 conditions, 5542 events. 3620/5542 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 28794 event pairs, 2151 based on Foata normal form. 294/4734 useless extension candidates. Maximal degree in co-relation 11303. Up to 4571 conditions per place. [2024-06-28 01:06:46,989 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 154 selfloop transitions, 3 changer transitions 0/160 dead transitions. [2024-06-28 01:06:46,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 160 transitions, 863 flow [2024-06-28 01:06:46,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:06:46,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:06:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-06-28 01:06:46,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 01:06:46,991 INFO L175 Difference]: Start difference. First operand has 87 places, 118 transitions, 462 flow. Second operand 4 states and 154 transitions. [2024-06-28 01:06:46,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 160 transitions, 863 flow [2024-06-28 01:06:46,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 160 transitions, 823 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:46,994 INFO L231 Difference]: Finished difference. Result has 88 places, 117 transitions, 429 flow [2024-06-28 01:06:46,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=429, PETRI_PLACES=88, PETRI_TRANSITIONS=117} [2024-06-28 01:06:46,995 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2024-06-28 01:06:46,995 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 117 transitions, 429 flow [2024-06-28 01:06:46,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-06-28 01:06:46,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:46,996 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1] [2024-06-28 01:06:47,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-28 01:06:47,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:47,314 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:06:47,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:47,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1837070669, now seen corresponding path program 1 times [2024-06-28 01:06:47,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:47,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835788917] [2024-06-28 01:06:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:47,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-06-28 01:06:47,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:47,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835788917] [2024-06-28 01:06:47,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835788917] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:06:47,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490946637] [2024-06-28 01:06:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:47,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:47,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:47,553 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) [2024-06-28 01:06:47,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-28 01:06:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:47,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-28 01:06:47,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:06:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-06-28 01:06:47,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:06:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-06-28 01:06:48,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490946637] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:06:48,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:06:48,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-06-28 01:06:48,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981319071] [2024-06-28 01:06:48,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:06:48,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 01:06:48,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:48,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 01:06:48,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2024-06-28 01:06:48,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:06:48,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 117 transitions, 429 flow. Second operand has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 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) [2024-06-28 01:06:48,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:48,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:06:48,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:49,155 INFO L124 PetriNetUnfolderBase]: 3620/5554 cut-off events. [2024-06-28 01:06:49,156 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2024-06-28 01:06:49,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11651 conditions, 5554 events. 3620/5554 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 28693 event pairs, 2612 based on Foata normal form. 10/4462 useless extension candidates. Maximal degree in co-relation 11481. Up to 5508 conditions per place. [2024-06-28 01:06:49,174 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 82 selfloop transitions, 44 changer transitions 0/129 dead transitions. [2024-06-28 01:06:49,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 129 transitions, 753 flow [2024-06-28 01:06:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:06:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:06:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-28 01:06:49,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19467401285583102 [2024-06-28 01:06:49,178 INFO L175 Difference]: Start difference. First operand has 88 places, 117 transitions, 429 flow. Second operand 11 states and 212 transitions. [2024-06-28 01:06:49,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 129 transitions, 753 flow [2024-06-28 01:06:49,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 129 transitions, 752 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:49,181 INFO L231 Difference]: Finished difference. Result has 98 places, 129 transitions, 614 flow [2024-06-28 01:06:49,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=614, PETRI_PLACES=98, PETRI_TRANSITIONS=129} [2024-06-28 01:06:49,182 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 23 predicate places. [2024-06-28 01:06:49,182 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 129 transitions, 614 flow [2024-06-28 01:06:49,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.733333333333333) internal successors, (161), 15 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) [2024-06-28 01:06:49,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:49,182 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 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] [2024-06-28 01:06:49,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-28 01:06:49,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:49,396 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:06:49,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:49,396 INFO L85 PathProgramCache]: Analyzing trace with hash -598060533, now seen corresponding path program 2 times [2024-06-28 01:06:49,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:49,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826595035] [2024-06-28 01:06:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:49,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-28 01:06:49,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:49,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826595035] [2024-06-28 01:06:49,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826595035] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:06:49,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252068442] [2024-06-28 01:06:49,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-28 01:06:49,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:49,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:49,675 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) [2024-06-28 01:06:49,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-28 01:06:50,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-28 01:06:50,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:06:50,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 11 conjunts are in the unsatisfiable core [2024-06-28 01:06:50,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:06:50,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-28 01:06:50,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 35 treesize of output 23 [2024-06-28 01:06:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-06-28 01:06:50,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-28 01:06:50,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252068442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:50,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-28 01:06:50,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-06-28 01:06:50,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529927906] [2024-06-28 01:06:50,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:50,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:06:50,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:50,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:06:50,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:06:50,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:06:50,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 129 transitions, 614 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-06-28 01:06:50,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:50,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:06:50,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:51,692 INFO L124 PetriNetUnfolderBase]: 4508/6947 cut-off events. [2024-06-28 01:06:51,692 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2024-06-28 01:06:51,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14541 conditions, 6947 events. 4508/6947 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 38201 event pairs, 1492 based on Foata normal form. 1/5600 useless extension candidates. Maximal degree in co-relation 14329. Up to 3914 conditions per place. [2024-06-28 01:06:51,715 INFO L140 encePairwiseOnDemand]: 78/99 looper letters, 204 selfloop transitions, 22 changer transitions 9/238 dead transitions. [2024-06-28 01:06:51,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 238 transitions, 1319 flow [2024-06-28 01:06:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:06:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:06:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2024-06-28 01:06:51,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686868686868687 [2024-06-28 01:06:51,717 INFO L175 Difference]: Start difference. First operand has 98 places, 129 transitions, 614 flow. Second operand 5 states and 232 transitions. [2024-06-28 01:06:51,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 238 transitions, 1319 flow [2024-06-28 01:06:51,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 238 transitions, 1197 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 01:06:51,721 INFO L231 Difference]: Finished difference. Result has 99 places, 147 transitions, 642 flow [2024-06-28 01:06:51,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=642, PETRI_PLACES=99, PETRI_TRANSITIONS=147} [2024-06-28 01:06:51,722 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2024-06-28 01:06:51,722 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 147 transitions, 642 flow [2024-06-28 01:06:51,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-06-28 01:06:51,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:51,723 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 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] [2024-06-28 01:06:51,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-06-28 01:06:51,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:51,935 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:06:51,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:51,935 INFO L85 PathProgramCache]: Analyzing trace with hash 554824853, now seen corresponding path program 3 times [2024-06-28 01:06:51,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:51,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6655950] [2024-06-28 01:06:51,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:51,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:52,202 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-28 01:06:52,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:52,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6655950] [2024-06-28 01:06:52,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6655950] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:06:52,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580374205] [2024-06-28 01:06:52,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-28 01:06:52,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:52,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:52,205 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) [2024-06-28 01:06:52,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-06-28 01:06:52,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-06-28 01:06:52,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:06:52,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-28 01:06:52,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:06:52,682 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-28 01:06:52,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 35 treesize of output 23 [2024-06-28 01:06:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-06-28 01:06:52,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-28 01:06:52,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580374205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:52,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-28 01:06:52,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-06-28 01:06:52,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907103593] [2024-06-28 01:06:52,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:52,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:06:52,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:52,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:06:52,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:06:52,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:06:52,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 147 transitions, 642 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-06-28 01:06:52,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:52,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:06:52,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:54,264 INFO L124 PetriNetUnfolderBase]: 4648/7217 cut-off events. [2024-06-28 01:06:54,264 INFO L125 PetriNetUnfolderBase]: For 1472/1472 co-relation queries the response was YES. [2024-06-28 01:06:54,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17496 conditions, 7217 events. 4648/7217 cut-off events. For 1472/1472 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 40613 event pairs, 1498 based on Foata normal form. 1/5834 useless extension candidates. Maximal degree in co-relation 17441. Up to 4254 conditions per place. [2024-06-28 01:06:54,290 INFO L140 encePairwiseOnDemand]: 78/99 looper letters, 201 selfloop transitions, 22 changer transitions 9/235 dead transitions. [2024-06-28 01:06:54,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 235 transitions, 1318 flow [2024-06-28 01:06:54,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:06:54,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:06:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2024-06-28 01:06:54,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4626262626262626 [2024-06-28 01:06:54,291 INFO L175 Difference]: Start difference. First operand has 99 places, 147 transitions, 642 flow. Second operand 5 states and 229 transitions. [2024-06-28 01:06:54,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 235 transitions, 1318 flow [2024-06-28 01:06:54,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 235 transitions, 1310 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:54,304 INFO L231 Difference]: Finished difference. Result has 104 places, 147 transitions, 692 flow [2024-06-28 01:06:54,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=692, PETRI_PLACES=104, PETRI_TRANSITIONS=147} [2024-06-28 01:06:54,305 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 29 predicate places. [2024-06-28 01:06:54,305 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 147 transitions, 692 flow [2024-06-28 01:06:54,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-06-28 01:06:54,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:54,305 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 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, 1] [2024-06-28 01:06:54,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-06-28 01:06:54,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:54,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:06:54,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1425740985, now seen corresponding path program 1 times [2024-06-28 01:06:54,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:54,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69094863] [2024-06-28 01:06:54,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:54,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-28 01:06:54,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:54,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69094863] [2024-06-28 01:06:54,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69094863] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:06:54,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541150017] [2024-06-28 01:06:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:54,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:54,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:54,802 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) [2024-06-28 01:06:54,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-06-28 01:06:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:55,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-28 01:06:55,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:06:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-28 01:06:55,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:06:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-28 01:06:55,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541150017] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:06:55,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:06:55,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-06-28 01:06:55,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321135663] [2024-06-28 01:06:55,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:06:55,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-06-28 01:06:55,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:55,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-06-28 01:06:55,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2024-06-28 01:06:55,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:06:55,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 147 transitions, 692 flow. Second operand has 20 states, 20 states have (on average 9.75) internal successors, (195), 20 states have internal predecessors, (195), 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) [2024-06-28 01:06:55,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:55,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:06:55,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:57,040 INFO L124 PetriNetUnfolderBase]: 4635/7207 cut-off events. [2024-06-28 01:06:57,040 INFO L125 PetriNetUnfolderBase]: For 3424/3424 co-relation queries the response was YES. [2024-06-28 01:06:57,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18432 conditions, 7207 events. 4635/7207 cut-off events. For 3424/3424 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 40068 event pairs, 3435 based on Foata normal form. 14/5837 useless extension candidates. Maximal degree in co-relation 18374. Up to 7143 conditions per place. [2024-06-28 01:06:57,071 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 100 selfloop transitions, 58 changer transitions 0/161 dead transitions. [2024-06-28 01:06:57,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 161 transitions, 1120 flow [2024-06-28 01:06:57,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:06:57,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:06:57,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 249 transitions. [2024-06-28 01:06:57,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17965367965367965 [2024-06-28 01:06:57,073 INFO L175 Difference]: Start difference. First operand has 104 places, 147 transitions, 692 flow. Second operand 14 states and 249 transitions. [2024-06-28 01:06:57,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 161 transitions, 1120 flow [2024-06-28 01:06:57,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 161 transitions, 1095 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 01:06:57,096 INFO L231 Difference]: Finished difference. Result has 121 places, 161 transitions, 993 flow [2024-06-28 01:06:57,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=993, PETRI_PLACES=121, PETRI_TRANSITIONS=161} [2024-06-28 01:06:57,097 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 46 predicate places. [2024-06-28 01:06:57,097 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 161 transitions, 993 flow [2024-06-28 01:06:57,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.75) internal successors, (195), 20 states have internal predecessors, (195), 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) [2024-06-28 01:06:57,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:57,098 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 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, 1] [2024-06-28 01:06:57,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-06-28 01:06:57,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:57,312 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:06:57,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:57,313 INFO L85 PathProgramCache]: Analyzing trace with hash -184856326, now seen corresponding path program 2 times [2024-06-28 01:06:57,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:57,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667462706] [2024-06-28 01:06:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:57,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-28 01:06:57,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667462706] [2024-06-28 01:06:57,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667462706] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:06:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197265210] [2024-06-28 01:06:57,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-28 01:06:57,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:57,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:57,750 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) [2024-06-28 01:06:57,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-06-28 01:06:58,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-28 01:06:58,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:06:58,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2024-06-28 01:06:58,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:06:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-06-28 01:06:58,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-28 01:06:58,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197265210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:58,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-28 01:06:58,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2024-06-28 01:06:58,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909937469] [2024-06-28 01:06:58,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:58,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:06:58,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:58,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:06:58,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2024-06-28 01:06:58,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:06:58,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 161 transitions, 993 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-06-28 01:06:58,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:58,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:06:58,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:59,712 INFO L124 PetriNetUnfolderBase]: 4718/7421 cut-off events. [2024-06-28 01:06:59,712 INFO L125 PetriNetUnfolderBase]: For 2068/2068 co-relation queries the response was YES. [2024-06-28 01:06:59,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18772 conditions, 7421 events. 4718/7421 cut-off events. For 2068/2068 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 43077 event pairs, 1221 based on Foata normal form. 82/6065 useless extension candidates. Maximal degree in co-relation 18427. Up to 6024 conditions per place. [2024-06-28 01:06:59,746 INFO L140 encePairwiseOnDemand]: 83/99 looper letters, 185 selfloop transitions, 20 changer transitions 2/210 dead transitions. [2024-06-28 01:06:59,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 210 transitions, 1541 flow [2024-06-28 01:06:59,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:06:59,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:06:59,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-06-28 01:06:59,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2024-06-28 01:06:59,747 INFO L175 Difference]: Start difference. First operand has 121 places, 161 transitions, 993 flow. Second operand 3 states and 156 transitions. [2024-06-28 01:06:59,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 210 transitions, 1541 flow [2024-06-28 01:06:59,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 210 transitions, 1473 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-28 01:06:59,760 INFO L231 Difference]: Finished difference. Result has 123 places, 177 transitions, 1111 flow [2024-06-28 01:06:59,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1111, PETRI_PLACES=123, PETRI_TRANSITIONS=177} [2024-06-28 01:06:59,760 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 48 predicate places. [2024-06-28 01:06:59,760 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 177 transitions, 1111 flow [2024-06-28 01:06:59,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-06-28 01:06:59,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:59,761 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 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, 1] [2024-06-28 01:06:59,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-06-28 01:06:59,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-06-28 01:06:59,977 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:06:59,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:59,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1623435838, now seen corresponding path program 3 times [2024-06-28 01:06:59,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:59,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873498512] [2024-06-28 01:06:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:59,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-28 01:07:00,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:00,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873498512] [2024-06-28 01:07:00,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873498512] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:07:00,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252414939] [2024-06-28 01:07:00,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-28 01:07:00,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:07:00,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:07:00,412 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) [2024-06-28 01:07:00,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-06-28 01:07:00,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-06-28 01:07:00,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:07:00,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 12 conjunts are in the unsatisfiable core [2024-06-28 01:07:00,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:07:01,024 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-06-28 01:07:01,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 9 [2024-06-28 01:07:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-06-28 01:07:01,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-28 01:07:01,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252414939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:01,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-28 01:07:01,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2024-06-28 01:07:01,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145695816] [2024-06-28 01:07:01,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:01,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:07:01,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:01,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:07:01,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2024-06-28 01:07:01,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:01,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 177 transitions, 1111 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-06-28 01:07:01,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:01,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:01,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:03,087 INFO L124 PetriNetUnfolderBase]: 5355/8579 cut-off events. [2024-06-28 01:07:03,087 INFO L125 PetriNetUnfolderBase]: For 3990/3990 co-relation queries the response was YES. [2024-06-28 01:07:03,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22703 conditions, 8579 events. 5355/8579 cut-off events. For 3990/3990 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 52612 event pairs, 934 based on Foata normal form. 3/6998 useless extension candidates. Maximal degree in co-relation 22371. Up to 2948 conditions per place. [2024-06-28 01:07:03,119 INFO L140 encePairwiseOnDemand]: 75/99 looper letters, 278 selfloop transitions, 66 changer transitions 14/361 dead transitions. [2024-06-28 01:07:03,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 361 transitions, 2370 flow [2024-06-28 01:07:03,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:07:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:07:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 330 transitions. [2024-06-28 01:07:03,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 01:07:03,121 INFO L175 Difference]: Start difference. First operand has 123 places, 177 transitions, 1111 flow. Second operand 7 states and 330 transitions. [2024-06-28 01:07:03,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 361 transitions, 2370 flow [2024-06-28 01:07:03,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 361 transitions, 2322 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:07:03,144 INFO L231 Difference]: Finished difference. Result has 131 places, 209 transitions, 1508 flow [2024-06-28 01:07:03,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1508, PETRI_PLACES=131, PETRI_TRANSITIONS=209} [2024-06-28 01:07:03,145 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 56 predicate places. [2024-06-28 01:07:03,145 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 209 transitions, 1508 flow [2024-06-28 01:07:03,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-06-28 01:07:03,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:03,145 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 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, 1] [2024-06-28 01:07:03,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-06-28 01:07:03,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:07:03,358 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:03,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:03,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1370711310, now seen corresponding path program 1 times [2024-06-28 01:07:03,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:03,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138139855] [2024-06-28 01:07:03,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:03,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-28 01:07:03,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138139855] [2024-06-28 01:07:03,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138139855] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:07:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681264203] [2024-06-28 01:07:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:03,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:07:03,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:07:03,724 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) [2024-06-28 01:07:03,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-06-28 01:07:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:04,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-28 01:07:04,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:07:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-28 01:07:04,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:07:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-28 01:07:04,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681264203] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:07:04,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:07:04,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-06-28 01:07:04,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063411516] [2024-06-28 01:07:04,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:07:04,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-06-28 01:07:04,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:04,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-06-28 01:07:04,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2024-06-28 01:07:04,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:04,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 209 transitions, 1508 flow. Second operand has 29 states, 29 states have (on average 9.206896551724139) internal successors, (267), 29 states have internal predecessors, (267), 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) [2024-06-28 01:07:04,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:04,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:04,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:06,759 INFO L124 PetriNetUnfolderBase]: 5355/8582 cut-off events. [2024-06-28 01:07:06,759 INFO L125 PetriNetUnfolderBase]: For 7986/7986 co-relation queries the response was YES. [2024-06-28 01:07:06,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25195 conditions, 8582 events. 5355/8582 cut-off events. For 7986/7986 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 52039 event pairs, 4108 based on Foata normal form. 2/7000 useless extension candidates. Maximal degree in co-relation 24852. Up to 8512 conditions per place. [2024-06-28 01:07:06,802 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 148 selfloop transitions, 60 changer transitions 0/211 dead transitions. [2024-06-28 01:07:06,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 211 transitions, 1944 flow [2024-06-28 01:07:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-28 01:07:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-28 01:07:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 281 transitions. [2024-06-28 01:07:06,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.14191919191919192 [2024-06-28 01:07:06,804 INFO L175 Difference]: Start difference. First operand has 131 places, 209 transitions, 1508 flow. Second operand 20 states and 281 transitions. [2024-06-28 01:07:06,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 211 transitions, 1944 flow [2024-06-28 01:07:06,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 211 transitions, 1929 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 01:07:06,847 INFO L231 Difference]: Finished difference. Result has 150 places, 211 transitions, 1643 flow [2024-06-28 01:07:06,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1643, PETRI_PLACES=150, PETRI_TRANSITIONS=211} [2024-06-28 01:07:06,849 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 75 predicate places. [2024-06-28 01:07:06,849 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 211 transitions, 1643 flow [2024-06-28 01:07:06,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.206896551724139) internal successors, (267), 29 states have internal predecessors, (267), 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) [2024-06-28 01:07:06,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:06,850 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1] [2024-06-28 01:07:06,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-06-28 01:07:07,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-06-28 01:07:07,068 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:07,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:07,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2168589, now seen corresponding path program 2 times [2024-06-28 01:07:07,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:07,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684180762] [2024-06-28 01:07:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:07,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:07,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:07,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684180762] [2024-06-28 01:07:07,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684180762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:07,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:07,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:07,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880070047] [2024-06-28 01:07:07,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:07,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:07,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:07,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:07,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:07,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 211 transitions, 1643 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-06-28 01:07:07,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:07,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:07,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:09,200 INFO L124 PetriNetUnfolderBase]: 5258/8456 cut-off events. [2024-06-28 01:07:09,200 INFO L125 PetriNetUnfolderBase]: For 7366/7366 co-relation queries the response was YES. [2024-06-28 01:07:09,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24712 conditions, 8456 events. 5258/8456 cut-off events. For 7366/7366 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 51117 event pairs, 3450 based on Foata normal form. 85/6964 useless extension candidates. Maximal degree in co-relation 24314. Up to 7033 conditions per place. [2024-06-28 01:07:09,242 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 240 selfloop transitions, 7 changer transitions 2/252 dead transitions. [2024-06-28 01:07:09,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 252 transitions, 2290 flow [2024-06-28 01:07:09,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-06-28 01:07:09,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983164983164983 [2024-06-28 01:07:09,243 INFO L175 Difference]: Start difference. First operand has 150 places, 211 transitions, 1643 flow. Second operand 3 states and 148 transitions. [2024-06-28 01:07:09,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 252 transitions, 2290 flow [2024-06-28 01:07:09,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 252 transitions, 2130 flow, removed 22 selfloop flow, removed 14 redundant places. [2024-06-28 01:07:09,279 INFO L231 Difference]: Finished difference. Result has 139 places, 211 transitions, 1508 flow [2024-06-28 01:07:09,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1508, PETRI_PLACES=139, PETRI_TRANSITIONS=211} [2024-06-28 01:07:09,280 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 64 predicate places. [2024-06-28 01:07:09,280 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 211 transitions, 1508 flow [2024-06-28 01:07:09,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-06-28 01:07:09,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:09,280 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1] [2024-06-28 01:07:09,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:07:09,280 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:09,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:09,281 INFO L85 PathProgramCache]: Analyzing trace with hash -881969135, now seen corresponding path program 1 times [2024-06-28 01:07:09,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:09,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200965539] [2024-06-28 01:07:09,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:09,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:09,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:09,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200965539] [2024-06-28 01:07:09,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200965539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:09,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:09,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:09,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566620094] [2024-06-28 01:07:09,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:09,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:09,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:09,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:09,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:09,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:09,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 211 transitions, 1508 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-06-28 01:07:09,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:09,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:09,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:11,540 INFO L124 PetriNetUnfolderBase]: 4992/8189 cut-off events. [2024-06-28 01:07:11,540 INFO L125 PetriNetUnfolderBase]: For 7968/7968 co-relation queries the response was YES. [2024-06-28 01:07:11,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23563 conditions, 8189 events. 4992/8189 cut-off events. For 7968/7968 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 51250 event pairs, 2279 based on Foata normal form. 266/6878 useless extension candidates. Maximal degree in co-relation 23224. Up to 4183 conditions per place. [2024-06-28 01:07:11,582 INFO L140 encePairwiseOnDemand]: 85/99 looper letters, 217 selfloop transitions, 7 changer transitions 22/249 dead transitions. [2024-06-28 01:07:11,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 249 transitions, 2050 flow [2024-06-28 01:07:11,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:11,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-06-28 01:07:11,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 01:07:11,584 INFO L175 Difference]: Start difference. First operand has 139 places, 211 transitions, 1508 flow. Second operand 3 states and 165 transitions. [2024-06-28 01:07:11,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 249 transitions, 2050 flow [2024-06-28 01:07:11,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 249 transitions, 2043 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:07:11,625 INFO L231 Difference]: Finished difference. Result has 142 places, 200 transitions, 1468 flow [2024-06-28 01:07:11,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1468, PETRI_PLACES=142, PETRI_TRANSITIONS=200} [2024-06-28 01:07:11,626 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 67 predicate places. [2024-06-28 01:07:11,626 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 200 transitions, 1468 flow [2024-06-28 01:07:11,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-06-28 01:07:11,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:11,626 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1] [2024-06-28 01:07:11,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:07:11,627 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:11,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:11,627 INFO L85 PathProgramCache]: Analyzing trace with hash 903831751, now seen corresponding path program 1 times [2024-06-28 01:07:11,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:11,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626185036] [2024-06-28 01:07:11,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:11,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:11,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:11,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626185036] [2024-06-28 01:07:11,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626185036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:11,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:11,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:11,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732672058] [2024-06-28 01:07:11,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:11,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:11,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:11,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:11,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:11,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:11,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 200 transitions, 1468 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-06-28 01:07:11,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:11,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:11,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:13,450 INFO L124 PetriNetUnfolderBase]: 4704/7676 cut-off events. [2024-06-28 01:07:13,450 INFO L125 PetriNetUnfolderBase]: For 8479/8479 co-relation queries the response was YES. [2024-06-28 01:07:13,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22656 conditions, 7676 events. 4704/7676 cut-off events. For 8479/8479 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 46366 event pairs, 3285 based on Foata normal form. 75/6229 useless extension candidates. Maximal degree in co-relation 22316. Up to 6531 conditions per place. [2024-06-28 01:07:13,490 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 211 selfloop transitions, 5 changer transitions 12/231 dead transitions. [2024-06-28 01:07:13,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 231 transitions, 1984 flow [2024-06-28 01:07:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2024-06-28 01:07:13,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49158249158249157 [2024-06-28 01:07:13,492 INFO L175 Difference]: Start difference. First operand has 142 places, 200 transitions, 1468 flow. Second operand 3 states and 146 transitions. [2024-06-28 01:07:13,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 231 transitions, 1984 flow [2024-06-28 01:07:13,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 231 transitions, 1973 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:07:13,539 INFO L231 Difference]: Finished difference. Result has 144 places, 195 transitions, 1435 flow [2024-06-28 01:07:13,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1435, PETRI_PLACES=144, PETRI_TRANSITIONS=195} [2024-06-28 01:07:13,540 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 69 predicate places. [2024-06-28 01:07:13,540 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 195 transitions, 1435 flow [2024-06-28 01:07:13,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-06-28 01:07:13,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:13,540 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1] [2024-06-28 01:07:13,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:07:13,540 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:13,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:13,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1116249349, now seen corresponding path program 1 times [2024-06-28 01:07:13,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:13,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232667492] [2024-06-28 01:07:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:13,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:14,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:14,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232667492] [2024-06-28 01:07:14,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232667492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:14,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:14,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:07:14,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82442887] [2024-06-28 01:07:14,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:14,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:07:14,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:14,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:07:14,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:07:14,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:14,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 195 transitions, 1435 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-06-28 01:07:14,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:14,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:14,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:15,719 INFO L124 PetriNetUnfolderBase]: 4887/8045 cut-off events. [2024-06-28 01:07:15,719 INFO L125 PetriNetUnfolderBase]: For 8462/8462 co-relation queries the response was YES. [2024-06-28 01:07:15,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23768 conditions, 8045 events. 4887/8045 cut-off events. For 8462/8462 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 49950 event pairs, 3817 based on Foata normal form. 6/6484 useless extension candidates. Maximal degree in co-relation 23426. Up to 7605 conditions per place. [2024-06-28 01:07:15,764 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 222 selfloop transitions, 4 changer transitions 9/238 dead transitions. [2024-06-28 01:07:15,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 238 transitions, 2062 flow [2024-06-28 01:07:15,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:07:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:07:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-06-28 01:07:15,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-28 01:07:15,766 INFO L175 Difference]: Start difference. First operand has 144 places, 195 transitions, 1435 flow. Second operand 4 states and 159 transitions. [2024-06-28 01:07:15,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 238 transitions, 2062 flow [2024-06-28 01:07:15,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 238 transitions, 2025 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 01:07:15,817 INFO L231 Difference]: Finished difference. Result has 146 places, 195 transitions, 1416 flow [2024-06-28 01:07:15,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1416, PETRI_PLACES=146, PETRI_TRANSITIONS=195} [2024-06-28 01:07:15,818 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 71 predicate places. [2024-06-28 01:07:15,818 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 195 transitions, 1416 flow [2024-06-28 01:07:15,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-06-28 01:07:15,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:15,818 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1] [2024-06-28 01:07:15,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:07:15,818 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:15,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:15,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1187581829, now seen corresponding path program 2 times [2024-06-28 01:07:15,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:15,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588427891] [2024-06-28 01:07:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:15,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:16,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:16,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588427891] [2024-06-28 01:07:16,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588427891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:16,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:16,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:07:16,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954659932] [2024-06-28 01:07:16,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:16,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:07:16,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:16,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:07:16,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:07:16,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:16,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 195 transitions, 1416 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-06-28 01:07:16,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:16,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:16,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:18,036 INFO L124 PetriNetUnfolderBase]: 5049/8366 cut-off events. [2024-06-28 01:07:18,037 INFO L125 PetriNetUnfolderBase]: For 7931/7931 co-relation queries the response was YES. [2024-06-28 01:07:18,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24406 conditions, 8366 events. 5049/8366 cut-off events. For 7931/7931 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 53149 event pairs, 1762 based on Foata normal form. 1/6760 useless extension candidates. Maximal degree in co-relation 24309. Up to 5436 conditions per place. [2024-06-28 01:07:18,092 INFO L140 encePairwiseOnDemand]: 80/99 looper letters, 239 selfloop transitions, 31 changer transitions 12/285 dead transitions. [2024-06-28 01:07:18,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 285 transitions, 2273 flow [2024-06-28 01:07:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:07:18,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:07:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-06-28 01:07:18,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45252525252525255 [2024-06-28 01:07:18,094 INFO L175 Difference]: Start difference. First operand has 146 places, 195 transitions, 1416 flow. Second operand 5 states and 224 transitions. [2024-06-28 01:07:18,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 285 transitions, 2273 flow [2024-06-28 01:07:18,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 285 transitions, 2264 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 01:07:18,132 INFO L231 Difference]: Finished difference. Result has 149 places, 195 transitions, 1482 flow [2024-06-28 01:07:18,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1482, PETRI_PLACES=149, PETRI_TRANSITIONS=195} [2024-06-28 01:07:18,133 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 74 predicate places. [2024-06-28 01:07:18,133 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 195 transitions, 1482 flow [2024-06-28 01:07:18,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-06-28 01:07:18,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:18,134 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:18,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:07:18,134 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:18,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:18,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2071331307, now seen corresponding path program 1 times [2024-06-28 01:07:18,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:18,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774747867] [2024-06-28 01:07:18,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:18,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-06-28 01:07:18,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:18,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774747867] [2024-06-28 01:07:18,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774747867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:18,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:18,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:18,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449197129] [2024-06-28 01:07:18,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:18,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:18,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:18,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:18,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:18,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:18,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 195 transitions, 1482 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-06-28 01:07:18,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:18,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:18,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:20,261 INFO L124 PetriNetUnfolderBase]: 4981/8234 cut-off events. [2024-06-28 01:07:20,262 INFO L125 PetriNetUnfolderBase]: For 10278/10278 co-relation queries the response was YES. [2024-06-28 01:07:20,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24730 conditions, 8234 events. 4981/8234 cut-off events. For 10278/10278 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 51485 event pairs, 3925 based on Foata normal form. 9/6646 useless extension candidates. Maximal degree in co-relation 24617. Up to 7902 conditions per place. [2024-06-28 01:07:20,297 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 186 selfloop transitions, 0 changer transitions 37/226 dead transitions. [2024-06-28 01:07:20,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 226 transitions, 1983 flow [2024-06-28 01:07:20,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-06-28 01:07:20,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:07:20,298 INFO L175 Difference]: Start difference. First operand has 149 places, 195 transitions, 1482 flow. Second operand 3 states and 143 transitions. [2024-06-28 01:07:20,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 226 transitions, 1983 flow [2024-06-28 01:07:20,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 226 transitions, 1920 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 01:07:20,334 INFO L231 Difference]: Finished difference. Result has 146 places, 189 transitions, 1376 flow [2024-06-28 01:07:20,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1376, PETRI_PLACES=146, PETRI_TRANSITIONS=189} [2024-06-28 01:07:20,335 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 71 predicate places. [2024-06-28 01:07:20,335 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 189 transitions, 1376 flow [2024-06-28 01:07:20,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-06-28 01:07:20,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:20,336 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2024-06-28 01:07:20,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:07:20,336 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:20,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:20,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1917849816, now seen corresponding path program 1 times [2024-06-28 01:07:20,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:20,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76696028] [2024-06-28 01:07:20,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:20,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:21,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:21,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76696028] [2024-06-28 01:07:21,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76696028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:21,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:21,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:21,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041213060] [2024-06-28 01:07:21,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:21,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:21,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:21,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:21,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:21,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:21,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 189 transitions, 1376 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-06-28 01:07:21,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:21,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:21,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:23,024 INFO L124 PetriNetUnfolderBase]: 4836/8111 cut-off events. [2024-06-28 01:07:23,025 INFO L125 PetriNetUnfolderBase]: For 6822/6822 co-relation queries the response was YES. [2024-06-28 01:07:23,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23528 conditions, 8111 events. 4836/8111 cut-off events. For 6822/6822 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 51865 event pairs, 3438 based on Foata normal form. 54/6741 useless extension candidates. Maximal degree in co-relation 23492. Up to 6591 conditions per place. [2024-06-28 01:07:23,061 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 228 selfloop transitions, 12 changer transitions 6/249 dead transitions. [2024-06-28 01:07:23,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 249 transitions, 2072 flow [2024-06-28 01:07:23,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:23,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-06-28 01:07:23,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.569023569023569 [2024-06-28 01:07:23,063 INFO L175 Difference]: Start difference. First operand has 146 places, 189 transitions, 1376 flow. Second operand 3 states and 169 transitions. [2024-06-28 01:07:23,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 249 transitions, 2072 flow [2024-06-28 01:07:23,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 249 transitions, 2066 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-28 01:07:23,094 INFO L231 Difference]: Finished difference. Result has 146 places, 189 transitions, 1437 flow [2024-06-28 01:07:23,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1437, PETRI_PLACES=146, PETRI_TRANSITIONS=189} [2024-06-28 01:07:23,095 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 71 predicate places. [2024-06-28 01:07:23,095 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 189 transitions, 1437 flow [2024-06-28 01:07:23,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-06-28 01:07:23,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:23,095 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2024-06-28 01:07:23,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:07:23,096 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:23,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:23,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1137932754, now seen corresponding path program 2 times [2024-06-28 01:07:23,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:23,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904341246] [2024-06-28 01:07:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:23,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:23,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:23,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904341246] [2024-06-28 01:07:23,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904341246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:23,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:23,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:23,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608381999] [2024-06-28 01:07:23,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:23,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:23,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:23,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:23,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:23,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:23,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 189 transitions, 1437 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-06-28 01:07:23,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:23,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:23,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:25,733 INFO L124 PetriNetUnfolderBase]: 4561/7660 cut-off events. [2024-06-28 01:07:25,733 INFO L125 PetriNetUnfolderBase]: For 8576/8576 co-relation queries the response was YES. [2024-06-28 01:07:25,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22299 conditions, 7660 events. 4561/7660 cut-off events. For 8576/8576 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 48652 event pairs, 2602 based on Foata normal form. 100/6367 useless extension candidates. Maximal degree in co-relation 22261. Up to 3950 conditions per place. [2024-06-28 01:07:25,772 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 213 selfloop transitions, 6 changer transitions 5/227 dead transitions. [2024-06-28 01:07:25,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 227 transitions, 1917 flow [2024-06-28 01:07:25,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:25,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:25,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-06-28 01:07:25,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2024-06-28 01:07:25,776 INFO L175 Difference]: Start difference. First operand has 146 places, 189 transitions, 1437 flow. Second operand 3 states and 159 transitions. [2024-06-28 01:07:25,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 227 transitions, 1917 flow [2024-06-28 01:07:25,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 227 transitions, 1913 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:07:25,811 INFO L231 Difference]: Finished difference. Result has 147 places, 177 transitions, 1295 flow [2024-06-28 01:07:25,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1295, PETRI_PLACES=147, PETRI_TRANSITIONS=177} [2024-06-28 01:07:25,812 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 72 predicate places. [2024-06-28 01:07:25,812 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 177 transitions, 1295 flow [2024-06-28 01:07:25,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-06-28 01:07:25,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:25,813 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2024-06-28 01:07:25,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:07:25,813 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:25,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash -692548033, now seen corresponding path program 1 times [2024-06-28 01:07:25,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:25,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272419625] [2024-06-28 01:07:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:25,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:26,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:26,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272419625] [2024-06-28 01:07:26,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272419625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:26,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:26,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:26,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623699986] [2024-06-28 01:07:26,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:26,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:26,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:26,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:26,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:26,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:26,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 177 transitions, 1295 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-06-28 01:07:26,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:26,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:26,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:28,265 INFO L124 PetriNetUnfolderBase]: 4745/8078 cut-off events. [2024-06-28 01:07:28,265 INFO L125 PetriNetUnfolderBase]: For 7172/7172 co-relation queries the response was YES. [2024-06-28 01:07:28,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23219 conditions, 8078 events. 4745/8078 cut-off events. For 7172/7172 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 53012 event pairs, 2635 based on Foata normal form. 59/6681 useless extension candidates. Maximal degree in co-relation 23181. Up to 4156 conditions per place. [2024-06-28 01:07:28,303 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 207 selfloop transitions, 12 changer transitions 5/227 dead transitions. [2024-06-28 01:07:28,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 227 transitions, 1926 flow [2024-06-28 01:07:28,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-06-28 01:07:28,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2024-06-28 01:07:28,305 INFO L175 Difference]: Start difference. First operand has 147 places, 177 transitions, 1295 flow. Second operand 3 states and 159 transitions. [2024-06-28 01:07:28,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 227 transitions, 1926 flow [2024-06-28 01:07:28,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 227 transitions, 1876 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:07:28,339 INFO L231 Difference]: Finished difference. Result has 146 places, 177 transitions, 1310 flow [2024-06-28 01:07:28,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1310, PETRI_PLACES=146, PETRI_TRANSITIONS=177} [2024-06-28 01:07:28,340 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 71 predicate places. [2024-06-28 01:07:28,340 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 177 transitions, 1310 flow [2024-06-28 01:07:28,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-06-28 01:07:28,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:28,340 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2024-06-28 01:07:28,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:07:28,340 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:28,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2144202235, now seen corresponding path program 2 times [2024-06-28 01:07:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:28,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098989253] [2024-06-28 01:07:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:28,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:28,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:28,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098989253] [2024-06-28 01:07:28,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098989253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:28,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:28,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:28,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600268117] [2024-06-28 01:07:28,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:28,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:28,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:28,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:28,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:28,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:28,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 177 transitions, 1310 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-06-28 01:07:28,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:28,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:28,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:30,644 INFO L124 PetriNetUnfolderBase]: 4708/8015 cut-off events. [2024-06-28 01:07:30,644 INFO L125 PetriNetUnfolderBase]: For 7833/7833 co-relation queries the response was YES. [2024-06-28 01:07:30,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22431 conditions, 8015 events. 4708/8015 cut-off events. For 7833/7833 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 52342 event pairs, 3717 based on Foata normal form. 27/6586 useless extension candidates. Maximal degree in co-relation 22396. Up to 6997 conditions per place. [2024-06-28 01:07:30,676 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 203 selfloop transitions, 4 changer transitions 9/219 dead transitions. [2024-06-28 01:07:30,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 219 transitions, 1802 flow [2024-06-28 01:07:30,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-06-28 01:07:30,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286195286195287 [2024-06-28 01:07:30,677 INFO L175 Difference]: Start difference. First operand has 146 places, 177 transitions, 1310 flow. Second operand 3 states and 157 transitions. [2024-06-28 01:07:30,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 219 transitions, 1802 flow [2024-06-28 01:07:30,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 219 transitions, 1796 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:07:30,707 INFO L231 Difference]: Finished difference. Result has 147 places, 171 transitions, 1219 flow [2024-06-28 01:07:30,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1219, PETRI_PLACES=147, PETRI_TRANSITIONS=171} [2024-06-28 01:07:30,707 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 72 predicate places. [2024-06-28 01:07:30,707 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 171 transitions, 1219 flow [2024-06-28 01:07:30,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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) [2024-06-28 01:07:30,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:30,707 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2024-06-28 01:07:30,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:07:30,708 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:30,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:30,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1574273557, now seen corresponding path program 1 times [2024-06-28 01:07:30,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:30,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013889728] [2024-06-28 01:07:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:30,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:30,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:30,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013889728] [2024-06-28 01:07:30,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013889728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:30,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:30,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:30,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824831051] [2024-06-28 01:07:30,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:30,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:30,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:30,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:30,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:30,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:30,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 171 transitions, 1219 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-28 01:07:30,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:30,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:30,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:32,387 INFO L124 PetriNetUnfolderBase]: 4637/7911 cut-off events. [2024-06-28 01:07:32,387 INFO L125 PetriNetUnfolderBase]: For 6837/6837 co-relation queries the response was YES. [2024-06-28 01:07:32,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22008 conditions, 7911 events. 4637/7911 cut-off events. For 6837/6837 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 51819 event pairs, 3008 based on Foata normal form. 41/6501 useless extension candidates. Maximal degree in co-relation 21973. Up to 4893 conditions per place. [2024-06-28 01:07:32,417 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 196 selfloop transitions, 5 changer transitions 14/218 dead transitions. [2024-06-28 01:07:32,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 218 transitions, 1775 flow [2024-06-28 01:07:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:32,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-06-28 01:07:32,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-28 01:07:32,419 INFO L175 Difference]: Start difference. First operand has 147 places, 171 transitions, 1219 flow. Second operand 3 states and 154 transitions. [2024-06-28 01:07:32,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 218 transitions, 1775 flow [2024-06-28 01:07:32,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 218 transitions, 1751 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:07:32,446 INFO L231 Difference]: Finished difference. Result has 147 places, 168 transitions, 1162 flow [2024-06-28 01:07:32,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1162, PETRI_PLACES=147, PETRI_TRANSITIONS=168} [2024-06-28 01:07:32,447 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 72 predicate places. [2024-06-28 01:07:32,447 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 168 transitions, 1162 flow [2024-06-28 01:07:32,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-28 01:07:32,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:32,447 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2024-06-28 01:07:32,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:07:32,447 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:32,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:32,448 INFO L85 PathProgramCache]: Analyzing trace with hash -167582909, now seen corresponding path program 2 times [2024-06-28 01:07:32,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:32,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811938293] [2024-06-28 01:07:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:32,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:32,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:32,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811938293] [2024-06-28 01:07:32,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811938293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:32,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:32,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:32,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587758038] [2024-06-28 01:07:32,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:32,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:32,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:32,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:32,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:32,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:32,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 168 transitions, 1162 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-28 01:07:32,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:32,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:32,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:34,062 INFO L124 PetriNetUnfolderBase]: 4588/7817 cut-off events. [2024-06-28 01:07:34,062 INFO L125 PetriNetUnfolderBase]: For 5757/5757 co-relation queries the response was YES. [2024-06-28 01:07:34,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21449 conditions, 7817 events. 4588/7817 cut-off events. For 5757/5757 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 50911 event pairs, 3845 based on Foata normal form. 4/6378 useless extension candidates. Maximal degree in co-relation 21416. Up to 7312 conditions per place. [2024-06-28 01:07:34,108 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 189 selfloop transitions, 2 changer transitions 20/214 dead transitions. [2024-06-28 01:07:34,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 214 transitions, 1713 flow [2024-06-28 01:07:34,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-06-28 01:07:34,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2024-06-28 01:07:34,110 INFO L175 Difference]: Start difference. First operand has 147 places, 168 transitions, 1162 flow. Second operand 3 states and 150 transitions. [2024-06-28 01:07:34,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 214 transitions, 1713 flow [2024-06-28 01:07:34,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 214 transitions, 1705 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:07:34,138 INFO L231 Difference]: Finished difference. Result has 147 places, 167 transitions, 1145 flow [2024-06-28 01:07:34,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1145, PETRI_PLACES=147, PETRI_TRANSITIONS=167} [2024-06-28 01:07:34,139 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 72 predicate places. [2024-06-28 01:07:34,139 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 167 transitions, 1145 flow [2024-06-28 01:07:34,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-28 01:07:34,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:34,139 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:34,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:07:34,140 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:34,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:34,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1841232151, now seen corresponding path program 1 times [2024-06-28 01:07:34,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:34,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611086541] [2024-06-28 01:07:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:34,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-06-28 01:07:34,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:34,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611086541] [2024-06-28 01:07:34,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611086541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:34,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:34,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:34,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96142162] [2024-06-28 01:07:34,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:34,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:34,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:34,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:34,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:34,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:34,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 167 transitions, 1145 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-28 01:07:34,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:34,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:34,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:35,909 INFO L124 PetriNetUnfolderBase]: 3575/6038 cut-off events. [2024-06-28 01:07:35,910 INFO L125 PetriNetUnfolderBase]: For 4620/4620 co-relation queries the response was YES. [2024-06-28 01:07:35,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16589 conditions, 6038 events. 3575/6038 cut-off events. For 4620/4620 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 36911 event pairs, 1694 based on Foata normal form. 77/4887 useless extension candidates. Maximal degree in co-relation 16556. Up to 3126 conditions per place. [2024-06-28 01:07:35,937 INFO L140 encePairwiseOnDemand]: 87/99 looper letters, 168 selfloop transitions, 6 changer transitions 14/191 dead transitions. [2024-06-28 01:07:35,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 191 transitions, 1505 flow [2024-06-28 01:07:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:35,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:35,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-06-28 01:07:35,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882154882154882 [2024-06-28 01:07:35,938 INFO L175 Difference]: Start difference. First operand has 147 places, 167 transitions, 1145 flow. Second operand 3 states and 145 transitions. [2024-06-28 01:07:35,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 191 transitions, 1505 flow [2024-06-28 01:07:35,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 191 transitions, 1477 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:07:35,965 INFO L231 Difference]: Finished difference. Result has 146 places, 150 transitions, 983 flow [2024-06-28 01:07:35,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=983, PETRI_PLACES=146, PETRI_TRANSITIONS=150} [2024-06-28 01:07:35,966 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 71 predicate places. [2024-06-28 01:07:35,966 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 150 transitions, 983 flow [2024-06-28 01:07:35,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-06-28 01:07:35,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:35,966 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:35,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:07:35,967 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:35,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:35,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1262305758, now seen corresponding path program 1 times [2024-06-28 01:07:35,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:35,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242486666] [2024-06-28 01:07:35,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:35,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:36,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:36,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242486666] [2024-06-28 01:07:36,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242486666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:36,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:36,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:07:36,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689403063] [2024-06-28 01:07:36,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:36,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:07:36,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:07:36,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:07:36,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:36,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 150 transitions, 983 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-28 01:07:36,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:36,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:36,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:37,153 INFO L124 PetriNetUnfolderBase]: 2786/4712 cut-off events. [2024-06-28 01:07:37,153 INFO L125 PetriNetUnfolderBase]: For 3135/3135 co-relation queries the response was YES. [2024-06-28 01:07:37,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12746 conditions, 4712 events. 2786/4712 cut-off events. For 3135/3135 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 26832 event pairs, 2366 based on Foata normal form. 1/3941 useless extension candidates. Maximal degree in co-relation 12714. Up to 4521 conditions per place. [2024-06-28 01:07:37,182 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 150 selfloop transitions, 1 changer transitions 20/174 dead transitions. [2024-06-28 01:07:37,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 174 transitions, 1378 flow [2024-06-28 01:07:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:07:37,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:07:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-28 01:07:37,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-28 01:07:37,183 INFO L175 Difference]: Start difference. First operand has 146 places, 150 transitions, 983 flow. Second operand 4 states and 129 transitions. [2024-06-28 01:07:37,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 174 transitions, 1378 flow [2024-06-28 01:07:37,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 174 transitions, 1358 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 01:07:37,195 INFO L231 Difference]: Finished difference. Result has 139 places, 148 transitions, 947 flow [2024-06-28 01:07:37,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=947, PETRI_PLACES=139, PETRI_TRANSITIONS=148} [2024-06-28 01:07:37,196 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 64 predicate places. [2024-06-28 01:07:37,196 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 148 transitions, 947 flow [2024-06-28 01:07:37,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-28 01:07:37,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:37,196 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:37,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:07:37,196 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:37,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:37,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1750003383, now seen corresponding path program 1 times [2024-06-28 01:07:37,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:37,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587817971] [2024-06-28 01:07:37,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:37,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:37,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:37,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587817971] [2024-06-28 01:07:37,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587817971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:37,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:37,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:07:37,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047263446] [2024-06-28 01:07:37,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:37,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:07:37,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:37,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:07:37,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:07:37,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:37,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 148 transitions, 947 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-28 01:07:37,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:37,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:37,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:38,323 INFO L124 PetriNetUnfolderBase]: 2703/4568 cut-off events. [2024-06-28 01:07:38,323 INFO L125 PetriNetUnfolderBase]: For 2004/2004 co-relation queries the response was YES. [2024-06-28 01:07:38,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12142 conditions, 4568 events. 2703/4568 cut-off events. For 2004/2004 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 25707 event pairs, 2287 based on Foata normal form. 1/3812 useless extension candidates. Maximal degree in co-relation 12110. Up to 4377 conditions per place. [2024-06-28 01:07:38,343 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 148 selfloop transitions, 1 changer transitions 20/172 dead transitions. [2024-06-28 01:07:38,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 172 transitions, 1340 flow [2024-06-28 01:07:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:07:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:07:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-28 01:07:38,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32575757575757575 [2024-06-28 01:07:38,344 INFO L175 Difference]: Start difference. First operand has 139 places, 148 transitions, 947 flow. Second operand 4 states and 129 transitions. [2024-06-28 01:07:38,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 172 transitions, 1340 flow [2024-06-28 01:07:38,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 172 transitions, 1331 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:07:38,356 INFO L231 Difference]: Finished difference. Result has 140 places, 146 transitions, 922 flow [2024-06-28 01:07:38,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=922, PETRI_PLACES=140, PETRI_TRANSITIONS=146} [2024-06-28 01:07:38,357 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 65 predicate places. [2024-06-28 01:07:38,357 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 146 transitions, 922 flow [2024-06-28 01:07:38,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-28 01:07:38,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:38,357 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:38,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:07:38,357 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:38,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:38,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1941251606, now seen corresponding path program 2 times [2024-06-28 01:07:38,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:38,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326902841] [2024-06-28 01:07:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:38,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:38,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:38,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326902841] [2024-06-28 01:07:38,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326902841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:38,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:38,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:07:38,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159193091] [2024-06-28 01:07:38,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:38,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:07:38,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:38,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:07:38,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:07:38,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:38,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 146 transitions, 922 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-28 01:07:38,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:38,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:38,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:39,447 INFO L124 PetriNetUnfolderBase]: 2615/4406 cut-off events. [2024-06-28 01:07:39,447 INFO L125 PetriNetUnfolderBase]: For 1870/1870 co-relation queries the response was YES. [2024-06-28 01:07:39,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11620 conditions, 4406 events. 2615/4406 cut-off events. For 1870/1870 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 24432 event pairs, 2225 based on Foata normal form. 1/3665 useless extension candidates. Maximal degree in co-relation 11588. Up to 4271 conditions per place. [2024-06-28 01:07:39,463 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 138 selfloop transitions, 0 changer transitions 22/163 dead transitions. [2024-06-28 01:07:39,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 163 transitions, 1278 flow [2024-06-28 01:07:39,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:07:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:07:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-06-28 01:07:39,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-28 01:07:39,464 INFO L175 Difference]: Start difference. First operand has 140 places, 146 transitions, 922 flow. Second operand 4 states and 121 transitions. [2024-06-28 01:07:39,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 163 transitions, 1278 flow [2024-06-28 01:07:39,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 163 transitions, 1264 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:07:39,472 INFO L231 Difference]: Finished difference. Result has 139 places, 141 transitions, 885 flow [2024-06-28 01:07:39,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=885, PETRI_PLACES=139, PETRI_TRANSITIONS=141} [2024-06-28 01:07:39,473 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 64 predicate places. [2024-06-28 01:07:39,473 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 141 transitions, 885 flow [2024-06-28 01:07:39,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-28 01:07:39,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:39,473 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:39,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:07:39,473 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:39,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:39,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1731017865, now seen corresponding path program 2 times [2024-06-28 01:07:39,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:39,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909492350] [2024-06-28 01:07:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:39,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:39,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:39,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909492350] [2024-06-28 01:07:39,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909492350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:39,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:39,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:07:39,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207003273] [2024-06-28 01:07:39,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:39,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:07:39,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:39,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:07:39,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:07:39,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:39,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 141 transitions, 885 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-28 01:07:39,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:39,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:39,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:40,425 INFO L124 PetriNetUnfolderBase]: 2246/3787 cut-off events. [2024-06-28 01:07:40,425 INFO L125 PetriNetUnfolderBase]: For 1500/1500 co-relation queries the response was YES. [2024-06-28 01:07:40,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9873 conditions, 3787 events. 2246/3787 cut-off events. For 1500/1500 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 20102 event pairs, 1880 based on Foata normal form. 1/3227 useless extension candidates. Maximal degree in co-relation 9842. Up to 3663 conditions per place. [2024-06-28 01:07:40,440 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 129 selfloop transitions, 0 changer transitions 25/157 dead transitions. [2024-06-28 01:07:40,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 157 transitions, 1227 flow [2024-06-28 01:07:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:07:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:07:40,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-06-28 01:07:40,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2904040404040404 [2024-06-28 01:07:40,443 INFO L175 Difference]: Start difference. First operand has 139 places, 141 transitions, 885 flow. Second operand 4 states and 115 transitions. [2024-06-28 01:07:40,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 157 transitions, 1227 flow [2024-06-28 01:07:40,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 157 transitions, 1219 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 01:07:40,451 INFO L231 Difference]: Finished difference. Result has 133 places, 132 transitions, 845 flow [2024-06-28 01:07:40,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=845, PETRI_PLACES=133, PETRI_TRANSITIONS=132} [2024-06-28 01:07:40,454 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 58 predicate places. [2024-06-28 01:07:40,454 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 132 transitions, 845 flow [2024-06-28 01:07:40,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-06-28 01:07:40,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:40,454 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:40,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:07:40,454 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:40,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:40,455 INFO L85 PathProgramCache]: Analyzing trace with hash -445196675, now seen corresponding path program 1 times [2024-06-28 01:07:40,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:40,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269146689] [2024-06-28 01:07:40,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:40,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:40,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:40,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269146689] [2024-06-28 01:07:40,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269146689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:07:40,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:07:40,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:07:40,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821766485] [2024-06-28 01:07:40,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:07:40,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:07:40,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:07:40,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:07:40,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:07:40,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:07:40,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 132 transitions, 845 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-06-28 01:07:40,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:07:40,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:07:40,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:07:41,243 INFO L124 PetriNetUnfolderBase]: 1518/2602 cut-off events. [2024-06-28 01:07:41,243 INFO L125 PetriNetUnfolderBase]: For 1110/1110 co-relation queries the response was YES. [2024-06-28 01:07:41,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6841 conditions, 2602 events. 1518/2602 cut-off events. For 1110/1110 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 12529 event pairs, 1091 based on Foata normal form. 35/2277 useless extension candidates. Maximal degree in co-relation 6809. Up to 2136 conditions per place. [2024-06-28 01:07:41,255 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 145 selfloop transitions, 3 changer transitions 2/153 dead transitions. [2024-06-28 01:07:41,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 153 transitions, 1193 flow [2024-06-28 01:07:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:07:41,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:07:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-06-28 01:07:41,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-28 01:07:41,256 INFO L175 Difference]: Start difference. First operand has 133 places, 132 transitions, 845 flow. Second operand 3 states and 107 transitions. [2024-06-28 01:07:41,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 153 transitions, 1193 flow [2024-06-28 01:07:41,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 153 transitions, 1185 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:07:41,261 INFO L231 Difference]: Finished difference. Result has 121 places, 130 transitions, 832 flow [2024-06-28 01:07:41,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=832, PETRI_PLACES=121, PETRI_TRANSITIONS=130} [2024-06-28 01:07:41,262 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 46 predicate places. [2024-06-28 01:07:41,262 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 130 transitions, 832 flow [2024-06-28 01:07:41,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-06-28 01:07:41,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:07:41,262 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:07:41,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:07:41,263 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:07:41,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:07:41,265 INFO L85 PathProgramCache]: Analyzing trace with hash -874895134, now seen corresponding path program 1 times [2024-06-28 01:07:41,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:07:41,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959826243] [2024-06-28 01:07:41,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:41,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:07:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:46,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:07:46,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959826243] [2024-06-28 01:07:46,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959826243] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:07:46,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871287489] [2024-06-28 01:07:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:07:46,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:07:46,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:07:46,284 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) [2024-06-28 01:07:46,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-06-28 01:07:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:07:47,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 27 conjunts are in the unsatisfiable core [2024-06-28 01:07:47,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:07:49,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-28 01:07:49,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 68 [2024-06-28 01:07:49,996 INFO L349 Elim1Store]: treesize reduction 3, result has 91.9 percent of original size [2024-06-28 01:07:49,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 65 [2024-06-28 01:07:50,061 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2024-06-28 01:07:50,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 32 [2024-06-28 01:07:50,069 INFO L349 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2024-06-28 01:07:50,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 62 treesize of output 42 [2024-06-28 01:07:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-06-28 01:07:50,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:06,221 WARN L293 SmtUtils]: Spent 10.20s on a formula simplification that was a NOOP. DAG size: 1200 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-06-28 01:08:06,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-28 01:08:06,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 231 case distinctions, treesize of input 1144 treesize of output 3499 [2024-06-28 01:17:28,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-06-28 01:17:28,150 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-06-28 01:17:28,151 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-06-28 01:17:28,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-06-28 01:17:28,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-06-28 01:17:28,356 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:287) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:519) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:503) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:609) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 85 more [2024-06-28 01:17:28,362 INFO L158 Benchmark]: Toolchain (without parser) took 654058.44ms. Allocated memory was 155.2MB in the beginning and 3.6GB in the end (delta: 3.5GB). Free memory was 97.3MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2024-06-28 01:17:28,362 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory was 58.5MB in the beginning and 58.5MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:17:28,362 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:17:28,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 478.37ms. Allocated memory is still 155.2MB. Free memory was 97.3MB in the beginning and 121.7MB in the end (delta: -24.4MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2024-06-28 01:17:28,363 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.48ms. Allocated memory is still 155.2MB. Free memory was 121.7MB in the beginning and 119.5MB in the end (delta: 2.2MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2024-06-28 01:17:28,363 INFO L158 Benchmark]: Boogie Preprocessor took 152.41ms. Allocated memory is still 155.2MB. Free memory was 119.5MB in the beginning and 109.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-06-28 01:17:28,363 INFO L158 Benchmark]: RCFGBuilder took 2619.26ms. Allocated memory was 155.2MB in the beginning and 314.6MB in the end (delta: 159.4MB). Free memory was 109.0MB in the beginning and 179.9MB in the end (delta: -70.9MB). Peak memory consumption was 134.8MB. Max. memory is 16.1GB. [2024-06-28 01:17:28,363 INFO L158 Benchmark]: TraceAbstraction took 650682.71ms. Allocated memory was 314.6MB in the beginning and 3.6GB in the end (delta: 3.3GB). Free memory was 179.9MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2024-06-28 01:17:28,364 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory was 58.5MB in the beginning and 58.5MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 478.37ms. Allocated memory is still 155.2MB. Free memory was 97.3MB in the beginning and 121.7MB in the end (delta: -24.4MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.48ms. Allocated memory is still 155.2MB. Free memory was 121.7MB in the beginning and 119.5MB in the end (delta: 2.2MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 152.41ms. Allocated memory is still 155.2MB. Free memory was 119.5MB in the beginning and 109.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 2619.26ms. Allocated memory was 155.2MB in the beginning and 314.6MB in the end (delta: 159.4MB). Free memory was 109.0MB in the beginning and 179.9MB in the end (delta: -70.9MB). Peak memory consumption was 134.8MB. Max. memory is 16.1GB. * TraceAbstraction took 650682.71ms. Allocated memory was 314.6MB in the beginning and 3.6GB in the end (delta: 3.3GB). Free memory was 179.9MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/chl-poker-hand-symm.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:17:30,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:17:30,373 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-06-28 01:17:30,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:17:30,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:17:30,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:17:30,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:17:30,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:17:30,404 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:17:30,407 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:17:30,407 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:17:30,407 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:17:30,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:17:30,408 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:17:30,408 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:17:30,409 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:17:30,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:17:30,409 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:17:30,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:17:30,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:17:30,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:17:30,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:17:30,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:17:30,410 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-06-28 01:17:30,410 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-06-28 01:17:30,410 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:17:30,410 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-06-28 01:17:30,410 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:17:30,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:17:30,411 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:17:30,411 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:17:30,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:17:30,412 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:17:30,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:17:30,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:17:30,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:17:30,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:17:30,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:17:30,413 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-06-28 01:17:30,413 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-06-28 01:17:30,413 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:17:30,413 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:17:30,413 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:17:30,413 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:17:30,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:17:30,414 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-06-28 01:17:30,414 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:17:30,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:17:30,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:17:30,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:17:30,699 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:17:30,700 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:17:30,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/chl-poker-hand-symm.wvr.yml/witness.yml [2024-06-28 01:17:30,810 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:17:30,811 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:17:30,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-28 01:17:31,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:17:31,993 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:17:31,998 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2024-06-28 01:17:32,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea998a2ae/90911c1fc96041dcbe6deb3bdc4b7a2b/FLAG061243ed7 [2024-06-28 01:17:32,022 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea998a2ae/90911c1fc96041dcbe6deb3bdc4b7a2b [2024-06-28 01:17:32,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:17:32,024 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:17:32,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:17:32,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:17:32,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:17:32,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:17:30" (1/2) ... [2024-06-28 01:17:32,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6318526b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:17:32, skipping insertion in model container [2024-06-28 01:17:32,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:17:30" (1/2) ... [2024-06-28 01:17:32,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a4110c9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:17:32, skipping insertion in model container [2024-06-28 01:17:32,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:17:32" (2/2) ... [2024-06-28 01:17:32,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6318526b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32, skipping insertion in model container [2024-06-28 01:17:32,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:17:32" (2/2) ... [2024-06-28 01:17:32,034 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:17:32,072 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:17:32,073 INFO L97 edCorrectnessWitness]: Location invariant before [L230-L230] ((((! multithreaded || i2_16 == 0) && (! multithreaded || (((0 <= i1_9 && 0 <= i1_14) && i2_11 == 0) && i2_16 == 0))) && (! multithreaded || i2_11 == 0)) && (! multithreaded || 0 <= i1_14)) && (! multithreaded || 0 <= i1_9) [2024-06-28 01:17:32,073 INFO L97 edCorrectnessWitness]: Location invariant before [L231-L231] ((((! multithreaded || i2_16 == 0) && (! multithreaded || (((0 <= i1_9 && 0 <= i1_14) && i2_11 == 0) && i2_16 == 0))) && (! multithreaded || i2_11 == 0)) && (! multithreaded || 0 <= i1_14)) && (! multithreaded || 0 <= i1_9) [2024-06-28 01:17:32,073 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:17:32,074 INFO L106 edCorrectnessWitness]: ghost_update [L229-L229] multithreaded = 1; [2024-06-28 01:17:32,099 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:17:32,346 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-06-28 01:17:32,359 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:17:32,372 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-06-28 01:17:32,377 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:17:32,445 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-06-28 01:17:32,447 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:17:32,450 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:17:32,552 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2024-06-28 01:17:32,556 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:17:32,571 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:17:32,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32 WrapperNode [2024-06-28 01:17:32,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:17:32,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:17:32,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:17:32,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:17:32,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32" (1/1) ... [2024-06-28 01:17:32,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32" (1/1) ... [2024-06-28 01:17:32,658 INFO L138 Inliner]: procedures = 26, calls = 297, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1548 [2024-06-28 01:17:32,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:17:32,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:17:32,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:17:32,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:17:32,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32" (1/1) ... [2024-06-28 01:17:32,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32" (1/1) ... [2024-06-28 01:17:32,675 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32" (1/1) ... [2024-06-28 01:17:32,710 INFO L175 MemorySlicer]: Split 186 memory accesses to 2 slices as follows [2, 184]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 8 writes are split as follows [0, 8]. [2024-06-28 01:17:32,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32" (1/1) ... [2024-06-28 01:17:32,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32" (1/1) ... [2024-06-28 01:17:32,744 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32" (1/1) ... [2024-06-28 01:17:32,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32" (1/1) ... [2024-06-28 01:17:32,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32" (1/1) ... [2024-06-28 01:17:32,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32" (1/1) ... [2024-06-28 01:17:32,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:17:32,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:17:32,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:17:32,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:17:32,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32" (1/1) ... [2024-06-28 01:17:32,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:17:32,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:17:32,823 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) [2024-06-28 01:17:32,834 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 [2024-06-28 01:17:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:17:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-06-28 01:17:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-06-28 01:17:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-06-28 01:17:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-06-28 01:17:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-28 01:17:32,856 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-28 01:17:32,856 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-28 01:17:32,857 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-28 01:17:32,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:17:32,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:17:32,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-28 01:17:32,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:17:32,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:17:32,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-06-28 01:17:32,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-06-28 01:17:32,859 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:17:33,008 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:17:33,010 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:17:34,471 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:17:34,471 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:17:35,882 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:17:35,882 INFO L320 CfgBuilder]: Removed 12 assume(true) statements. [2024-06-28 01:17:35,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:17:35 BoogieIcfgContainer [2024-06-28 01:17:35,883 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:17:35,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:17:35,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:17:35,887 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:17:35,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:17:30" (1/4) ... [2024-06-28 01:17:35,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ad7246 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:17:35, skipping insertion in model container [2024-06-28 01:17:35,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:17:32" (2/4) ... [2024-06-28 01:17:35,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ad7246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:17:35, skipping insertion in model container [2024-06-28 01:17:35,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:32" (3/4) ... [2024-06-28 01:17:35,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ad7246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:17:35, skipping insertion in model container [2024-06-28 01:17:35,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:17:35" (4/4) ... [2024-06-28 01:17:35,890 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2024-06-28 01:17:35,903 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:17:35,904 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 01:17:35,904 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:17:36,193 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-28 01:17:36,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 99 transitions, 212 flow [2024-06-28 01:17:36,286 INFO L124 PetriNetUnfolderBase]: 28/97 cut-off events. [2024-06-28 01:17:36,286 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-28 01:17:36,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 97 events. 28/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 252 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2024-06-28 01:17:36,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 99 transitions, 212 flow [2024-06-28 01:17:36,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 96 transitions, 204 flow [2024-06-28 01:17:36,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:17:36,310 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@326f645c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:17:36,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-28 01:17:36,318 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:17:36,318 INFO L124 PetriNetUnfolderBase]: 8/23 cut-off events. [2024-06-28 01:17:36,318 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:17:36,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:36,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:36,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:17:36,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:36,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1944083913, now seen corresponding path program 1 times [2024-06-28 01:17:36,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-28 01:17:36,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649751965] [2024-06-28 01:17:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:36,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:36,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-28 01:17:36,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-28 01:17:36,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-06-28 01:17:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:36,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-28 01:17:36,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:17:36,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:36,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-28 01:17:36,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-28 01:17:36,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649751965] [2024-06-28 01:17:36,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649751965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:36,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:36,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:17:36,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178114778] [2024-06-28 01:17:36,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:36,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:17:36,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-28 01:17:36,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:17:36,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:17:36,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:17:36,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 96 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-06-28 01:17:36,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:36,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:17:36,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:38,331 INFO L124 PetriNetUnfolderBase]: 2533/3811 cut-off events. [2024-06-28 01:17:38,331 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-06-28 01:17:38,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7684 conditions, 3811 events. 2533/3811 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18259 event pairs, 1725 based on Foata normal form. 0/2996 useless extension candidates. Maximal degree in co-relation 7497. Up to 3793 conditions per place. [2024-06-28 01:17:38,347 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 85 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-06-28 01:17:38,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 94 transitions, 378 flow [2024-06-28 01:17:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:17:38,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:17:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-28 01:17:38,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-28 01:17:38,357 INFO L175 Difference]: Start difference. First operand has 75 places, 96 transitions, 204 flow. Second operand 3 states and 116 transitions. [2024-06-28 01:17:38,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 94 transitions, 378 flow [2024-06-28 01:17:38,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 94 transitions, 370 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:17:38,365 INFO L231 Difference]: Finished difference. Result has 74 places, 94 transitions, 210 flow [2024-06-28 01:17:38,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=74, PETRI_TRANSITIONS=94} [2024-06-28 01:17:38,369 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-06-28 01:17:38,369 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 94 transitions, 210 flow [2024-06-28 01:17:38,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-06-28 01:17:38,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:38,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:38,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-06-28 01:17:38,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:38,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:17:38,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:38,576 INFO L85 PathProgramCache]: Analyzing trace with hash -733273618, now seen corresponding path program 1 times [2024-06-28 01:17:38,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-28 01:17:38,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110559683] [2024-06-28 01:17:38,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:38,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:38,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-28 01:17:38,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-28 01:17:38,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-06-28 01:17:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:38,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-28 01:17:38,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:17:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-28 01:17:38,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:17:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-28 01:17:38,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-28 01:17:38,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110559683] [2024-06-28 01:17:38,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110559683] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:17:38,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-28 01:17:38,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-06-28 01:17:38,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049370910] [2024-06-28 01:17:38,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-28 01:17:38,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:17:38,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-28 01:17:38,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:17:38,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:17:38,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:17:38,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 94 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-06-28 01:17:38,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:38,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:17:38,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:40,273 INFO L124 PetriNetUnfolderBase]: 2533/3843 cut-off events. [2024-06-28 01:17:40,273 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-06-28 01:17:40,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7699 conditions, 3843 events. 2533/3843 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18458 event pairs, 1725 based on Foata normal form. 3/3025 useless extension candidates. Maximal degree in co-relation 7669. Up to 3793 conditions per place. [2024-06-28 01:17:40,288 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 79 selfloop transitions, 28 changer transitions 0/112 dead transitions. [2024-06-28 01:17:40,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 112 transitions, 472 flow [2024-06-28 01:17:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:17:40,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:17:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-28 01:17:40,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28114478114478114 [2024-06-28 01:17:40,290 INFO L175 Difference]: Start difference. First operand has 74 places, 94 transitions, 210 flow. Second operand 6 states and 167 transitions. [2024-06-28 01:17:40,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 112 transitions, 472 flow [2024-06-28 01:17:40,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 112 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:17:40,293 INFO L231 Difference]: Finished difference. Result has 80 places, 112 transitions, 362 flow [2024-06-28 01:17:40,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=80, PETRI_TRANSITIONS=112} [2024-06-28 01:17:40,293 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2024-06-28 01:17:40,293 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 112 transitions, 362 flow [2024-06-28 01:17:40,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-06-28 01:17:40,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:40,294 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:40,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-06-28 01:17:40,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:40,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:17:40,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:40,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1244185385, now seen corresponding path program 1 times [2024-06-28 01:17:40,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-28 01:17:40,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312653538] [2024-06-28 01:17:40,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:40,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:40,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-28 01:17:40,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-28 01:17:40,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-06-28 01:17:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:40,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-28 01:17:40,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:17:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-06-28 01:17:40,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:17:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-06-28 01:17:41,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-28 01:17:41,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312653538] [2024-06-28 01:17:41,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312653538] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:17:41,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-28 01:17:41,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-06-28 01:17:41,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445743342] [2024-06-28 01:17:41,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-28 01:17:41,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:17:41,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-28 01:17:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:17:41,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:17:41,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:17:41,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 112 transitions, 362 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2024-06-28 01:17:41,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:41,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:17:41,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:43,201 INFO L124 PetriNetUnfolderBase]: 2533/3859 cut-off events. [2024-06-28 01:17:43,202 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-28 01:17:43,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7803 conditions, 3859 events. 2533/3859 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18405 event pairs, 1725 based on Foata normal form. 15/3059 useless extension candidates. Maximal degree in co-relation 7733. Up to 3793 conditions per place. [2024-06-28 01:17:43,218 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 79 selfloop transitions, 44 changer transitions 0/128 dead transitions. [2024-06-28 01:17:43,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 676 flow [2024-06-28 01:17:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:17:43,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:17:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-28 01:17:43,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18771043771043772 [2024-06-28 01:17:43,223 INFO L175 Difference]: Start difference. First operand has 80 places, 112 transitions, 362 flow. Second operand 12 states and 223 transitions. [2024-06-28 01:17:43,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 676 flow [2024-06-28 01:17:43,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 128 transitions, 646 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 01:17:43,231 INFO L231 Difference]: Finished difference. Result has 93 places, 128 transitions, 550 flow [2024-06-28 01:17:43,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=550, PETRI_PLACES=93, PETRI_TRANSITIONS=128} [2024-06-28 01:17:43,232 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 18 predicate places. [2024-06-28 01:17:43,233 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 128 transitions, 550 flow [2024-06-28 01:17:43,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2024-06-28 01:17:43,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:43,233 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:43,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-06-28 01:17:43,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:43,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:17:43,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1123426113, now seen corresponding path program 2 times [2024-06-28 01:17:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-28 01:17:43,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742856886] [2024-06-28 01:17:43,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-28 01:17:43,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:43,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-28 01:17:43,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-28 01:17:43,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-06-28 01:17:43,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-28 01:17:43,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:17:43,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-28 01:17:43,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:17:44,142 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-06-28 01:17:44,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-28 01:17:44,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-28 01:17:44,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742856886] [2024-06-28 01:17:44,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742856886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:44,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:44,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:17:44,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304315865] [2024-06-28 01:17:44,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:44,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:17:44,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-28 01:17:44,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:17:44,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:17:44,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-28 01:17:44,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 128 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-06-28 01:17:44,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:44,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-28 01:17:44,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:45,806 INFO L124 PetriNetUnfolderBase]: 4100/6218 cut-off events. [2024-06-28 01:17:45,806 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 01:17:45,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12605 conditions, 6218 events. 4100/6218 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 32105 event pairs, 1937 based on Foata normal form. 576/5580 useless extension candidates. Maximal degree in co-relation 12533. Up to 3728 conditions per place. [2024-06-28 01:17:45,828 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 191 selfloop transitions, 3 changer transitions 0/197 dead transitions. [2024-06-28 01:17:45,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 197 transitions, 1079 flow [2024-06-28 01:17:45,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:17:45,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:17:45,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-06-28 01:17:45,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892255892255892 [2024-06-28 01:17:45,829 INFO L175 Difference]: Start difference. First operand has 93 places, 128 transitions, 550 flow. Second operand 3 states and 175 transitions. [2024-06-28 01:17:45,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 197 transitions, 1079 flow [2024-06-28 01:17:45,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 197 transitions, 1043 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-28 01:17:45,833 INFO L231 Difference]: Finished difference. Result has 94 places, 130 transitions, 535 flow [2024-06-28 01:17:45,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=94, PETRI_TRANSITIONS=130} [2024-06-28 01:17:45,833 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 19 predicate places. [2024-06-28 01:17:45,833 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 130 transitions, 535 flow [2024-06-28 01:17:45,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-06-28 01:17:45,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:45,834 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:45,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-06-28 01:17:46,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:46,037 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:17:46,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:46,037 INFO L85 PathProgramCache]: Analyzing trace with hash 946822903, now seen corresponding path program 1 times [2024-06-28 01:17:46,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-28 01:17:46,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398768340] [2024-06-28 01:17:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:46,038 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:46,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-28 01:17:46,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-28 01:17:46,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-06-28 01:17:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:46,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-28 01:17:46,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:17:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-28 01:17:46,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:17:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-06-28 01:17:46,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-28 01:17:46,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398768340] [2024-06-28 01:17:46,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398768340] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:17:46,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-28 01:17:46,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-06-28 01:17:46,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499311305] [2024-06-28 01:17:46,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-28 01:17:46,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 01:17:46,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-28 01:17:46,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 01:17:46,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-06-28 01:17:46,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:17:46,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 130 transitions, 535 flow. Second operand has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 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) [2024-06-28 01:17:46,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:46,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:17:46,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:49,582 INFO L124 PetriNetUnfolderBase]: 3685/5692 cut-off events. [2024-06-28 01:17:49,582 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2024-06-28 01:17:49,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11939 conditions, 5692 events. 3685/5692 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 29406 event pairs, 2578 based on Foata normal form. 14/4534 useless extension candidates. Maximal degree in co-relation 11870. Up to 5598 conditions per place. [2024-06-28 01:17:49,598 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 81 selfloop transitions, 58 changer transitions 0/144 dead transitions. [2024-06-28 01:17:49,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 144 transitions, 897 flow [2024-06-28 01:17:49,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:17:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:17:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 249 transitions. [2024-06-28 01:17:49,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17965367965367965 [2024-06-28 01:17:49,603 INFO L175 Difference]: Start difference. First operand has 94 places, 130 transitions, 535 flow. Second operand 14 states and 249 transitions. [2024-06-28 01:17:49,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 144 transitions, 897 flow [2024-06-28 01:17:49,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 144 transitions, 894 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:17:49,606 INFO L231 Difference]: Finished difference. Result has 113 places, 144 transitions, 830 flow [2024-06-28 01:17:49,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=830, PETRI_PLACES=113, PETRI_TRANSITIONS=144} [2024-06-28 01:17:49,607 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 38 predicate places. [2024-06-28 01:17:49,607 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 144 transitions, 830 flow [2024-06-28 01:17:49,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 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) [2024-06-28 01:17:49,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:49,608 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:49,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-06-28 01:17:49,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:49,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:17:49,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:49,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1561244060, now seen corresponding path program 2 times [2024-06-28 01:17:49,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-28 01:17:49,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790762519] [2024-06-28 01:17:49,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-28 01:17:49,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:49,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-28 01:17:49,815 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-28 01:17:49,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-06-28 01:17:50,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-28 01:17:50,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:17:50,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-28 01:17:50,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:17:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-06-28 01:17:50,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-28 01:17:50,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-28 01:17:50,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790762519] [2024-06-28 01:17:50,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790762519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:50,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:50,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:17:50,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423039468] [2024-06-28 01:17:50,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:50,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:17:50,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-28 01:17:50,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:17:50,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:17:50,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-28 01:17:50,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 144 transitions, 830 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-06-28 01:17:50,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:50,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-28 01:17:50,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:52,807 INFO L124 PetriNetUnfolderBase]: 4851/7433 cut-off events. [2024-06-28 01:17:52,807 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2024-06-28 01:17:52,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15810 conditions, 7433 events. 4851/7433 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 39398 event pairs, 1970 based on Foata normal form. 150/6183 useless extension candidates. Maximal degree in co-relation 15712. Up to 3742 conditions per place. [2024-06-28 01:17:52,833 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 263 selfloop transitions, 6 changer transitions 0/272 dead transitions. [2024-06-28 01:17:52,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 272 transitions, 1642 flow [2024-06-28 01:17:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:17:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:17:52,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-06-28 01:17:52,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49696969696969695 [2024-06-28 01:17:52,835 INFO L175 Difference]: Start difference. First operand has 113 places, 144 transitions, 830 flow. Second operand 5 states and 246 transitions. [2024-06-28 01:17:52,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 272 transitions, 1642 flow [2024-06-28 01:17:52,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 272 transitions, 1614 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 01:17:52,842 INFO L231 Difference]: Finished difference. Result has 117 places, 147 transitions, 837 flow [2024-06-28 01:17:52,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=837, PETRI_PLACES=117, PETRI_TRANSITIONS=147} [2024-06-28 01:17:52,842 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 42 predicate places. [2024-06-28 01:17:52,843 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 147 transitions, 837 flow [2024-06-28 01:17:52,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-06-28 01:17:52,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:52,843 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:52,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-06-28 01:17:53,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:53,047 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:17:53,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:53,048 INFO L85 PathProgramCache]: Analyzing trace with hash -813339526, now seen corresponding path program 3 times [2024-06-28 01:17:53,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-28 01:17:53,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320099579] [2024-06-28 01:17:53,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-28 01:17:53,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:53,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-28 01:17:53,050 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-28 01:17:53,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-06-28 01:17:53,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-06-28 01:17:53,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:17:53,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-28 01:17:53,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:17:54,031 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-06-28 01:17:54,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:17:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-06-28 01:17:54,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-28 01:17:54,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320099579] [2024-06-28 01:17:54,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320099579] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:17:54,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-28 01:17:54,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-06-28 01:17:54,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829297599] [2024-06-28 01:17:54,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-28 01:17:54,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:54,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-28 01:17:54,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:54,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:54,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 99 [2024-06-28 01:17:54,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 147 transitions, 837 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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) [2024-06-28 01:17:54,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:54,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 99 [2024-06-28 01:17:54,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:56,832 INFO L124 PetriNetUnfolderBase]: 4750/7371 cut-off events. [2024-06-28 01:17:56,833 INFO L125 PetriNetUnfolderBase]: For 1921/1921 co-relation queries the response was YES. [2024-06-28 01:17:56,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15806 conditions, 7371 events. 4750/7371 cut-off events. For 1921/1921 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 39192 event pairs, 1725 based on Foata normal form. 444/6405 useless extension candidates. Maximal degree in co-relation 15705. Up to 3742 conditions per place. [2024-06-28 01:17:56,861 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 302 selfloop transitions, 8 changer transitions 0/313 dead transitions. [2024-06-28 01:17:56,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 313 transitions, 1804 flow [2024-06-28 01:17:56,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:17:56,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:17:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 300 transitions. [2024-06-28 01:17:56,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2024-06-28 01:17:56,863 INFO L175 Difference]: Start difference. First operand has 117 places, 147 transitions, 837 flow. Second operand 7 states and 300 transitions. [2024-06-28 01:17:56,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 313 transitions, 1804 flow [2024-06-28 01:17:56,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 313 transitions, 1797 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:17:56,869 INFO L231 Difference]: Finished difference. Result has 121 places, 147 transitions, 851 flow [2024-06-28 01:17:56,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=851, PETRI_PLACES=121, PETRI_TRANSITIONS=147} [2024-06-28 01:17:56,870 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 46 predicate places. [2024-06-28 01:17:56,870 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 147 transitions, 851 flow [2024-06-28 01:17:56,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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) [2024-06-28 01:17:56,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:56,871 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 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] [2024-06-28 01:17:56,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-06-28 01:17:57,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:57,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:17:57,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:57,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1869417880, now seen corresponding path program 1 times [2024-06-28 01:17:57,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-28 01:17:57,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27864148] [2024-06-28 01:17:57,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:57,088 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:17:57,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-28 01:17:57,089 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-28 01:17:57,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-06-28 01:17:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:57,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 17 conjunts are in the unsatisfiable core [2024-06-28 01:17:57,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:17:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-28 01:17:57,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:17:58,373 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-06-28 01:17:58,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-28 01:17:58,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27864148] [2024-06-28 01:17:58,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27864148] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:17:58,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-28 01:17:58,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2024-06-28 01:17:58,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725097796] [2024-06-28 01:17:58,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-28 01:17:58,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-06-28 01:17:58,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-28 01:17:58,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-06-28 01:17:58,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2024-06-28 01:17:58,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 99 [2024-06-28 01:17:58,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 147 transitions, 851 flow. Second operand has 28 states, 28 states have (on average 9.142857142857142) internal successors, (256), 28 states have internal predecessors, (256), 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) [2024-06-28 01:17:58,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:58,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 99 [2024-06-28 01:17:58,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:02,197 INFO L124 PetriNetUnfolderBase]: 4750/7373 cut-off events. [2024-06-28 01:18:02,197 INFO L125 PetriNetUnfolderBase]: For 1392/1392 co-relation queries the response was YES. [2024-06-28 01:18:02,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16122 conditions, 7373 events. 4750/7373 cut-off events. For 1392/1392 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 39931 event pairs, 3534 based on Foata normal form. 2/5965 useless extension candidates. Maximal degree in co-relation 16019. Up to 7302 conditions per place. [2024-06-28 01:18:02,222 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 86 selfloop transitions, 60 changer transitions 0/149 dead transitions. [2024-06-28 01:18:02,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 149 transitions, 1159 flow [2024-06-28 01:18:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-28 01:18:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-28 01:18:02,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 281 transitions. [2024-06-28 01:18:02,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.14191919191919192 [2024-06-28 01:18:02,225 INFO L175 Difference]: Start difference. First operand has 121 places, 147 transitions, 851 flow. Second operand 20 states and 281 transitions. [2024-06-28 01:18:02,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 149 transitions, 1159 flow [2024-06-28 01:18:02,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 149 transitions, 1143 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:18:02,232 INFO L231 Difference]: Finished difference. Result has 137 places, 149 transitions, 981 flow [2024-06-28 01:18:02,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=981, PETRI_PLACES=137, PETRI_TRANSITIONS=149} [2024-06-28 01:18:02,233 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 62 predicate places. [2024-06-28 01:18:02,233 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 149 transitions, 981 flow [2024-06-28 01:18:02,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.142857142857142) internal successors, (256), 28 states have internal predecessors, (256), 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) [2024-06-28 01:18:02,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:02,234 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 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] [2024-06-28 01:18:02,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-06-28 01:18:02,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:18:02,443 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:18:02,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:02,444 INFO L85 PathProgramCache]: Analyzing trace with hash 425399157, now seen corresponding path program 2 times [2024-06-28 01:18:02,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-28 01:18:02,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951987554] [2024-06-28 01:18:02,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-28 01:18:02,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-28 01:18:02,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-28 01:18:02,446 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-28 01:18:02,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process Killed by 15