./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.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/popl20-simple-array-sum.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/popl20-simple-array-sum.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/popl20-simple-array-sum.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 01:08:13,608 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:08:13,692 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:08:13,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:08:13,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:08:13,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:08:13,728 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:08:13,729 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:08:13,729 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:08:13,733 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:08:13,733 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:08:13,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:08:13,734 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:08:13,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:08:13,735 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:08:13,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:08:13,736 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:08:13,736 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:08:13,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:08:13,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:08:13,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:08:13,737 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:08:13,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:08:13,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:08:13,737 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:08:13,738 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:08:13,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:08:13,738 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:08:13,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:08:13,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:08:13,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:08:13,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:08:13,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:08:13,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:08:13,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:08:13,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:08:13,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:08:13,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:08:13,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:08:13,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:08:13,741 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:08:13,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:08:13,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:08:13,742 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:08:13,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:08:14,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:08:14,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:08:14,013 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:08:14,013 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:08:14,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2024-06-28 01:08:15,244 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:08:15,455 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:08:15,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2024-06-28 01:08:15,466 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42685ebaf/c7268d52bb8f4e01a994146016aee6c5/FLAG87b9d0b05 [2024-06-28 01:08:15,846 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42685ebaf/c7268d52bb8f4e01a994146016aee6c5 [2024-06-28 01:08:15,848 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:08:15,848 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:08:15,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/popl20-simple-array-sum.wvr.yml/witness.yml [2024-06-28 01:08:15,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:08:15,908 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:08:15,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:08:15,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:08:15,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:08:15,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:08:15" (1/2) ... [2024-06-28 01:08:15,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366afe7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:08:15, skipping insertion in model container [2024-06-28 01:08:15,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:08:15" (1/2) ... [2024-06-28 01:08:15,915 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@38db76ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:08:15, skipping insertion in model container [2024-06-28 01:08:15,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:08:15" (2/2) ... [2024-06-28 01:08:15,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366afe7b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:08:15, skipping insertion in model container [2024-06-28 01:08:15,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:08:15" (2/2) ... [2024-06-28 01:08:15,916 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:08:15,927 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:08:15,928 INFO L97 edCorrectnessWitness]: Location invariant before [L97-L97] (! multithreaded || 0 <= p) && (! multithreaded || 0 <= p) [2024-06-28 01:08:15,928 INFO L97 edCorrectnessWitness]: Location invariant before [L96-L96] (! multithreaded || 0 <= p) && (! multithreaded || 0 <= p) [2024-06-28 01:08:15,928 INFO L97 edCorrectnessWitness]: Location invariant before [L98-L98] (! multithreaded || 0 <= p) && (! multithreaded || 0 <= p) [2024-06-28 01:08:15,938 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:08:15,939 INFO L106 edCorrectnessWitness]: ghost_update [L95-L95] multithreaded = 1; [2024-06-28 01:08:15,953 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:08:16,090 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/popl20-simple-array-sum.wvr.c[2729,2742] [2024-06-28 01:08:16,097 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:08:16,109 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:08:16,182 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/popl20-simple-array-sum.wvr.c[2729,2742] [2024-06-28 01:08:16,184 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:08:16,198 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:08:16,198 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:08:16 WrapperNode [2024-06-28 01:08:16,198 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:08:16,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:08:16,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:08:16,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:08:16,204 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 01:08:16" (1/1) ... [2024-06-28 01:08:16,219 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 01:08:16" (1/1) ... [2024-06-28 01:08:16,238 INFO L138 Inliner]: procedures = 25, calls = 28, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 115 [2024-06-28 01:08:16,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:08:16,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:08:16,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:08:16,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:08:16,249 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 01:08:16" (1/1) ... [2024-06-28 01:08:16,249 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 01:08:16" (1/1) ... [2024-06-28 01:08:16,251 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 01:08:16" (1/1) ... [2024-06-28 01:08:16,266 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-06-28 01:08:16,267 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 01:08:16" (1/1) ... [2024-06-28 01:08:16,267 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 01:08:16" (1/1) ... [2024-06-28 01:08:16,272 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 01:08:16" (1/1) ... [2024-06-28 01:08:16,277 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 01:08:16" (1/1) ... [2024-06-28 01:08:16,278 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 01:08:16" (1/1) ... [2024-06-28 01:08:16,279 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 01:08:16" (1/1) ... [2024-06-28 01:08:16,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:08:16,282 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:08:16,282 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:08:16,282 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:08:16,283 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 01:08:16" (1/1) ... [2024-06-28 01:08:16,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:08:16,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:16,307 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 01:08:16,319 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 01:08:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:08:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-28 01:08:16,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-28 01:08:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-28 01:08:16,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-28 01:08:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-28 01:08:16,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-28 01:08:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:08:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:08:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:08:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:08:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:08:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:08:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-28 01:08:16,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:08:16,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:08:16,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:08:16,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:08:16,345 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 01:08:16,424 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:08:16,425 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:08:16,618 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:08:16,618 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:08:16,792 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:08:16,792 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-06-28 01:08:16,793 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:08:16 BoogieIcfgContainer [2024-06-28 01:08:16,793 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:08:16,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:08:16,796 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:08:16,799 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:08:16,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:08:15" (1/4) ... [2024-06-28 01:08:16,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb299a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:08:16, skipping insertion in model container [2024-06-28 01:08:16,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:08:15" (2/4) ... [2024-06-28 01:08:16,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb299a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:08:16, skipping insertion in model container [2024-06-28 01:08:16,802 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 01:08:16" (3/4) ... [2024-06-28 01:08:16,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb299a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:08:16, skipping insertion in model container [2024-06-28 01:08:16,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:08:16" (4/4) ... [2024-06-28 01:08:16,803 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-06-28 01:08:16,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:08:16,818 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:08:16,819 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:08:16,882 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-28 01:08:16,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 45 transitions, 111 flow [2024-06-28 01:08:16,951 INFO L124 PetriNetUnfolderBase]: 6/42 cut-off events. [2024-06-28 01:08:16,960 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-28 01:08:16,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 6/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-28 01:08:16,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 45 transitions, 111 flow [2024-06-28 01:08:16,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 41 transitions, 100 flow [2024-06-28 01:08:16,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:08:17,008 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;@5d81c62e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:08:17,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:08:17,016 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:08:17,016 INFO L124 PetriNetUnfolderBase]: 3/10 cut-off events. [2024-06-28 01:08:17,016 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:08:17,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:17,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:08:17,018 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:17,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:17,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1144066673, now seen corresponding path program 1 times [2024-06-28 01:08:17,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:17,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248718071] [2024-06-28 01:08:17,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:17,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:17,343 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 01:08:17,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:17,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248718071] [2024-06-28 01:08:17,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248718071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:08:17,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:08:17,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:08:17,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519554498] [2024-06-28 01:08:17,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:08:17,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:08:17,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:17,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:08:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:08:17,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-28 01:08:17,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 100 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 01:08:17,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:17,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-28 01:08:17,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:17,655 INFO L124 PetriNetUnfolderBase]: 996/1568 cut-off events. [2024-06-28 01:08:17,655 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-06-28 01:08:17,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3075 conditions, 1568 events. 996/1568 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7119 event pairs, 333 based on Foata normal form. 60/1437 useless extension candidates. Maximal degree in co-relation 2724. Up to 877 conditions per place. [2024-06-28 01:08:17,668 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 47 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-06-28 01:08:17,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 244 flow [2024-06-28 01:08:17,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:08:17,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:08:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-06-28 01:08:17,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-06-28 01:08:17,679 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 100 flow. Second operand 3 states and 88 transitions. [2024-06-28 01:08:17,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 244 flow [2024-06-28 01:08:17,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 224 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 01:08:17,686 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 100 flow [2024-06-28 01:08:17,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2024-06-28 01:08:17,691 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -4 predicate places. [2024-06-28 01:08:17,691 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 100 flow [2024-06-28 01:08:17,691 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 01:08:17,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:17,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:08:17,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:08:17,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:17,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:17,693 INFO L85 PathProgramCache]: Analyzing trace with hash 158101741, now seen corresponding path program 1 times [2024-06-28 01:08:17,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:17,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311253219] [2024-06-28 01:08:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:17,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:17,802 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 01:08:17,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:17,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311253219] [2024-06-28 01:08:17,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311253219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:08:17,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:08:17,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:08:17,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118287949] [2024-06-28 01:08:17,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:08:17,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:08:17,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:17,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:08:17,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:08:17,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-28 01:08:17,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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 01:08:17,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:17,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-28 01:08:17,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:18,112 INFO L124 PetriNetUnfolderBase]: 1412/2201 cut-off events. [2024-06-28 01:08:18,113 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-06-28 01:08:18,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4474 conditions, 2201 events. 1412/2201 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 10269 event pairs, 407 based on Foata normal form. 72/2033 useless extension candidates. Maximal degree in co-relation 1188. Up to 877 conditions per place. [2024-06-28 01:08:18,123 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 60 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2024-06-28 01:08:18,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 74 transitions, 304 flow [2024-06-28 01:08:18,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:08:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:08:18,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-28 01:08:18,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-28 01:08:18,125 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 100 flow. Second operand 4 states and 117 transitions. [2024-06-28 01:08:18,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 74 transitions, 304 flow [2024-06-28 01:08:18,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:08:18,126 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 138 flow [2024-06-28 01:08:18,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-06-28 01:08:18,127 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-06-28 01:08:18,127 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 138 flow [2024-06-28 01:08:18,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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 01:08:18,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:18,127 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:08:18,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:08:18,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:18,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:18,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1376216816, now seen corresponding path program 1 times [2024-06-28 01:08:18,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:18,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630347444] [2024-06-28 01:08:18,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:18,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-28 01:08:18,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:18,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630347444] [2024-06-28 01:08:18,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630347444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:08:18,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:08:18,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:08:18,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822643418] [2024-06-28 01:08:18,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:08:18,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:08:18,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:18,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:08:18,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:08:18,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-06-28 01:08:18,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 01:08:18,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:18,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-06-28 01:08:18,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:18,503 INFO L124 PetriNetUnfolderBase]: 1607/2713 cut-off events. [2024-06-28 01:08:18,504 INFO L125 PetriNetUnfolderBase]: For 944/959 co-relation queries the response was YES. [2024-06-28 01:08:18,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5854 conditions, 2713 events. 1607/2713 cut-off events. For 944/959 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 14100 event pairs, 1115 based on Foata normal form. 44/2420 useless extension candidates. Maximal degree in co-relation 2667. Up to 1813 conditions per place. [2024-06-28 01:08:18,515 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 62 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2024-06-28 01:08:18,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 85 transitions, 380 flow [2024-06-28 01:08:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:08:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:08:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 01:08:18,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5962962962962963 [2024-06-28 01:08:18,517 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 138 flow. Second operand 6 states and 161 transitions. [2024-06-28 01:08:18,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 85 transitions, 380 flow [2024-06-28 01:08:18,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 85 transitions, 378 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:08:18,520 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 212 flow [2024-06-28 01:08:18,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-06-28 01:08:18,520 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2024-06-28 01:08:18,520 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 212 flow [2024-06-28 01:08:18,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 01:08:18,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:18,521 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:08:18,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:08:18,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:18,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:18,521 INFO L85 PathProgramCache]: Analyzing trace with hash 626391807, now seen corresponding path program 1 times [2024-06-28 01:08:18,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:18,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627628599] [2024-06-28 01:08:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:18,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-28 01:08:18,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:18,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627628599] [2024-06-28 01:08:18,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627628599] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:18,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442726223] [2024-06-28 01:08:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:18,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:18,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:18,590 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 01:08:18,617 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 01:08:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:18,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-28 01:08:18,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:08:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-28 01:08:18,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-28 01:08:18,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442726223] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:08:18,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:08:18,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-06-28 01:08:18,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283470786] [2024-06-28 01:08:18,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:08:18,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 01:08:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 01:08:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-28 01:08:18,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-28 01:08:18,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 212 flow. Second operand has 14 states, 14 states have (on average 14.357142857142858) internal successors, (201), 14 states have internal predecessors, (201), 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 01:08:18,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:18,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-28 01:08:18,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:19,455 INFO L124 PetriNetUnfolderBase]: 2498/3809 cut-off events. [2024-06-28 01:08:19,455 INFO L125 PetriNetUnfolderBase]: For 1997/1997 co-relation queries the response was YES. [2024-06-28 01:08:19,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9137 conditions, 3809 events. 2498/3809 cut-off events. For 1997/1997 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 18656 event pairs, 491 based on Foata normal form. 134/3533 useless extension candidates. Maximal degree in co-relation 5036. Up to 709 conditions per place. [2024-06-28 01:08:19,474 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 130 selfloop transitions, 28 changer transitions 0/166 dead transitions. [2024-06-28 01:08:19,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 166 transitions, 828 flow [2024-06-28 01:08:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:08:19,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:08:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 302 transitions. [2024-06-28 01:08:19,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162393162393163 [2024-06-28 01:08:19,479 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 212 flow. Second operand 13 states and 302 transitions. [2024-06-28 01:08:19,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 166 transitions, 828 flow [2024-06-28 01:08:19,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 166 transitions, 826 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 01:08:19,487 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 348 flow [2024-06-28 01:08:19,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=348, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-28 01:08:19,489 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2024-06-28 01:08:19,489 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 348 flow [2024-06-28 01:08:19,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.357142857142858) internal successors, (201), 14 states have internal predecessors, (201), 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 01:08:19,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:19,489 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] [2024-06-28 01:08:19,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-28 01:08:19,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:19,702 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:19,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:19,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2108797660, now seen corresponding path program 1 times [2024-06-28 01:08:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:19,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762982240] [2024-06-28 01:08:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:19,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:20,120 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 01:08:20,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:20,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762982240] [2024-06-28 01:08:20,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762982240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:08:20,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:08:20,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:08:20,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118022782] [2024-06-28 01:08:20,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:08:20,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:08:20,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:20,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:08:20,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:08:20,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-06-28 01:08:20,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 01:08:20,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:20,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-06-28 01:08:20,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:20,430 INFO L124 PetriNetUnfolderBase]: 1936/3311 cut-off events. [2024-06-28 01:08:20,430 INFO L125 PetriNetUnfolderBase]: For 4552/4610 co-relation queries the response was YES. [2024-06-28 01:08:20,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8324 conditions, 3311 events. 1936/3311 cut-off events. For 4552/4610 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 18386 event pairs, 1364 based on Foata normal form. 1/2883 useless extension candidates. Maximal degree in co-relation 5154. Up to 2476 conditions per place. [2024-06-28 01:08:20,448 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 68 selfloop transitions, 5 changer transitions 1/86 dead transitions. [2024-06-28 01:08:20,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 86 transitions, 598 flow [2024-06-28 01:08:20,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:08:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:08:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-28 01:08:20,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-06-28 01:08:20,450 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 348 flow. Second operand 4 states and 116 transitions. [2024-06-28 01:08:20,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 86 transitions, 598 flow [2024-06-28 01:08:20,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 530 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 01:08:20,456 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 317 flow [2024-06-28 01:08:20,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2024-06-28 01:08:20,458 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2024-06-28 01:08:20,458 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 317 flow [2024-06-28 01:08:20,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 01:08:20,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:20,459 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] [2024-06-28 01:08:20,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:08:20,459 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:20,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:20,459 INFO L85 PathProgramCache]: Analyzing trace with hash 9804745, now seen corresponding path program 1 times [2024-06-28 01:08:20,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:20,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488456708] [2024-06-28 01:08:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:20,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:08:20,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:20,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488456708] [2024-06-28 01:08:20,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488456708] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:20,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119707411] [2024-06-28 01:08:20,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:20,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:20,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:20,556 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 01:08:20,571 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 01:08:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:20,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-28 01:08:20,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:08:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:08:20,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:08:20,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119707411] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:20,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-28 01:08:20,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-06-28 01:08:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480702043] [2024-06-28 01:08:20,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:08:20,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:08:20,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:20,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:08:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:08:20,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-06-28 01:08:20,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 01:08:20,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:20,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-06-28 01:08:20,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:21,027 INFO L124 PetriNetUnfolderBase]: 2382/4078 cut-off events. [2024-06-28 01:08:21,028 INFO L125 PetriNetUnfolderBase]: For 4340/4383 co-relation queries the response was YES. [2024-06-28 01:08:21,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10522 conditions, 4078 events. 2382/4078 cut-off events. For 4340/4383 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 23649 event pairs, 1785 based on Foata normal form. 2/3914 useless extension candidates. Maximal degree in co-relation 7098. Up to 2722 conditions per place. [2024-06-28 01:08:21,046 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 66 selfloop transitions, 8 changer transitions 0/86 dead transitions. [2024-06-28 01:08:21,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 529 flow [2024-06-28 01:08:21,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:08:21,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:08:21,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-06-28 01:08:21,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 01:08:21,047 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 317 flow. Second operand 5 states and 135 transitions. [2024-06-28 01:08:21,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 529 flow [2024-06-28 01:08:21,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 86 transitions, 521 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 01:08:21,053 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 311 flow [2024-06-28 01:08:21,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=311, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-06-28 01:08:21,053 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2024-06-28 01:08:21,053 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 311 flow [2024-06-28 01:08:21,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 01:08:21,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:21,054 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] [2024-06-28 01:08:21,067 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 01:08:21,264 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,SelfDestructingSolverStorable5 [2024-06-28 01:08:21,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:21,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:21,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1809063150, now seen corresponding path program 1 times [2024-06-28 01:08:21,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:21,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585655695] [2024-06-28 01:08:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:21,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:08:21,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585655695] [2024-06-28 01:08:21,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585655695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:08:21,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:08:21,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:08:21,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673307994] [2024-06-28 01:08:21,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:08:21,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:08:21,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:21,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:08:21,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:08:21,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-06-28 01:08:21,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 01:08:21,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:21,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-06-28 01:08:21,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:21,603 INFO L124 PetriNetUnfolderBase]: 2079/3678 cut-off events. [2024-06-28 01:08:21,603 INFO L125 PetriNetUnfolderBase]: For 3903/3967 co-relation queries the response was YES. [2024-06-28 01:08:21,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8969 conditions, 3678 events. 2079/3678 cut-off events. For 3903/3967 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 22200 event pairs, 1374 based on Foata normal form. 96/3582 useless extension candidates. Maximal degree in co-relation 5856. Up to 2038 conditions per place. [2024-06-28 01:08:21,621 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 75 selfloop transitions, 11 changer transitions 0/98 dead transitions. [2024-06-28 01:08:21,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 98 transitions, 603 flow [2024-06-28 01:08:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:08:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:08:21,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-28 01:08:21,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-28 01:08:21,623 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 311 flow. Second operand 6 states and 165 transitions. [2024-06-28 01:08:21,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 98 transitions, 603 flow [2024-06-28 01:08:21,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 98 transitions, 588 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 01:08:21,627 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 330 flow [2024-06-28 01:08:21,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-06-28 01:08:21,627 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2024-06-28 01:08:21,627 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 330 flow [2024-06-28 01:08:21,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 01:08:21,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:21,628 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] [2024-06-28 01:08:21,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:08:21,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:21,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2055815495, now seen corresponding path program 1 times [2024-06-28 01:08:21,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:21,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729365685] [2024-06-28 01:08:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:21,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:21,686 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 01:08:21,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:21,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729365685] [2024-06-28 01:08:21,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729365685] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:21,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331643780] [2024-06-28 01:08:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:21,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:21,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:21,688 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 01:08:21,729 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 01:08:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:21,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-28 01:08:21,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:08:21,810 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 01:08:21,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-28 01:08:21,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331643780] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:21,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-28 01:08:21,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-06-28 01:08:21,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267432210] [2024-06-28 01:08:21,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:08:21,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:08:21,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:21,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:08:21,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:08:21,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-06-28 01:08:21,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 330 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:08:21,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:21,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-06-28 01:08:21,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:22,175 INFO L124 PetriNetUnfolderBase]: 2375/4054 cut-off events. [2024-06-28 01:08:22,175 INFO L125 PetriNetUnfolderBase]: For 5331/5412 co-relation queries the response was YES. [2024-06-28 01:08:22,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11189 conditions, 4054 events. 2375/4054 cut-off events. For 5331/5412 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 24114 event pairs, 1386 based on Foata normal form. 249/4100 useless extension candidates. Maximal degree in co-relation 6697. Up to 2153 conditions per place. [2024-06-28 01:08:22,198 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 85 selfloop transitions, 5 changer transitions 8/110 dead transitions. [2024-06-28 01:08:22,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 110 transitions, 718 flow [2024-06-28 01:08:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:08:22,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:08:22,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-06-28 01:08:22,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6622222222222223 [2024-06-28 01:08:22,199 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 330 flow. Second operand 5 states and 149 transitions. [2024-06-28 01:08:22,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 110 transitions, 718 flow [2024-06-28 01:08:22,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 110 transitions, 702 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:08:22,208 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 333 flow [2024-06-28 01:08:22,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=333, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2024-06-28 01:08:22,208 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 32 predicate places. [2024-06-28 01:08:22,209 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 333 flow [2024-06-28 01:08:22,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:08:22,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:22,209 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 01:08:22,224 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 01:08:22,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:22,421 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:22,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:22,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1603182821, now seen corresponding path program 1 times [2024-06-28 01:08:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:22,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476687323] [2024-06-28 01:08:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:22,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-28 01:08:22,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:22,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476687323] [2024-06-28 01:08:22,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476687323] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:22,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79776557] [2024-06-28 01:08:22,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:22,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:22,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:22,496 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 01:08:22,524 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 01:08:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:22,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-28 01:08:22,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:08:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-28 01:08:22,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-28 01:08:22,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79776557] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:22,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-28 01:08:22,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-06-28 01:08:22,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875013307] [2024-06-28 01:08:22,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:08:22,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:08:22,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:22,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:08:22,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:08:22,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-06-28 01:08:22,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 01:08:22,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:22,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-06-28 01:08:22,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:22,959 INFO L124 PetriNetUnfolderBase]: 2627/4272 cut-off events. [2024-06-28 01:08:22,959 INFO L125 PetriNetUnfolderBase]: For 9427/9427 co-relation queries the response was YES. [2024-06-28 01:08:22,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13405 conditions, 4272 events. 2627/4272 cut-off events. For 9427/9427 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 23595 event pairs, 1080 based on Foata normal form. 114/4245 useless extension candidates. Maximal degree in co-relation 8250. Up to 1808 conditions per place. [2024-06-28 01:08:22,988 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 72 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2024-06-28 01:08:22,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 92 transitions, 581 flow [2024-06-28 01:08:22,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:08:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:08:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-06-28 01:08:22,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-06-28 01:08:22,989 INFO L175 Difference]: Start difference. First operand has 77 places, 64 transitions, 333 flow. Second operand 5 states and 141 transitions. [2024-06-28 01:08:22,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 92 transitions, 581 flow [2024-06-28 01:08:22,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 92 transitions, 552 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 01:08:22,997 INFO L231 Difference]: Finished difference. Result has 78 places, 63 transitions, 329 flow [2024-06-28 01:08:22,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=329, PETRI_PLACES=78, PETRI_TRANSITIONS=63} [2024-06-28 01:08:22,998 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-06-28 01:08:22,998 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 63 transitions, 329 flow [2024-06-28 01:08:22,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 01:08:22,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:22,998 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, 1, 1, 1] [2024-06-28 01:08:23,028 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 01:08:23,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:23,210 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:23,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:23,211 INFO L85 PathProgramCache]: Analyzing trace with hash 979528591, now seen corresponding path program 1 times [2024-06-28 01:08:23,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:23,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816653021] [2024-06-28 01:08:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:23,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:08:23,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:23,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816653021] [2024-06-28 01:08:23,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816653021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:08:23,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:08:23,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:08:23,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772266027] [2024-06-28 01:08:23,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:08:23,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:08:23,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:23,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:08:23,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:08:23,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-06-28 01:08:23,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 63 transitions, 329 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 01:08:23,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:23,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-06-28 01:08:23,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:23,557 INFO L124 PetriNetUnfolderBase]: 2096/3561 cut-off events. [2024-06-28 01:08:23,558 INFO L125 PetriNetUnfolderBase]: For 6199/6199 co-relation queries the response was YES. [2024-06-28 01:08:23,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10150 conditions, 3561 events. 2096/3561 cut-off events. For 6199/6199 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 20080 event pairs, 1586 based on Foata normal form. 0/3279 useless extension candidates. Maximal degree in co-relation 6464. Up to 2702 conditions per place. [2024-06-28 01:08:23,577 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 38 selfloop transitions, 6 changer transitions 26/82 dead transitions. [2024-06-28 01:08:23,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 82 transitions, 535 flow [2024-06-28 01:08:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:08:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:08:23,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:08:23,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5481481481481482 [2024-06-28 01:08:23,579 INFO L175 Difference]: Start difference. First operand has 78 places, 63 transitions, 329 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:08:23,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 82 transitions, 535 flow [2024-06-28 01:08:23,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 513 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:08:23,584 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 275 flow [2024-06-28 01:08:23,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2024-06-28 01:08:23,585 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 36 predicate places. [2024-06-28 01:08:23,585 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 275 flow [2024-06-28 01:08:23,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 01:08:23,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:23,586 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, 1, 1, 1, 1] [2024-06-28 01:08:23,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:08:23,586 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:23,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:23,587 INFO L85 PathProgramCache]: Analyzing trace with hash -735217014, now seen corresponding path program 1 times [2024-06-28 01:08:23,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:23,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246432421] [2024-06-28 01:08:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:23,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:23,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-28 01:08:23,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:23,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246432421] [2024-06-28 01:08:23,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246432421] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:23,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357436194] [2024-06-28 01:08:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:23,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:23,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:23,693 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 01:08:23,719 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 01:08:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:23,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-28 01:08:23,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:08:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-28 01:08:23,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-28 01:08:23,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357436194] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:23,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-28 01:08:23,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-06-28 01:08:23,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902559360] [2024-06-28 01:08:23,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:08:23,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:08:23,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:23,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:08:23,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:08:23,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-06-28 01:08:23,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 275 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:08:23,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:23,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-06-28 01:08:23,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:24,132 INFO L124 PetriNetUnfolderBase]: 2246/3885 cut-off events. [2024-06-28 01:08:24,132 INFO L125 PetriNetUnfolderBase]: For 5425/5425 co-relation queries the response was YES. [2024-06-28 01:08:24,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10792 conditions, 3885 events. 2246/3885 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 23212 event pairs, 956 based on Foata normal form. 129/3766 useless extension candidates. Maximal degree in co-relation 6914. Up to 1688 conditions per place. [2024-06-28 01:08:24,152 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 56 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2024-06-28 01:08:24,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 489 flow [2024-06-28 01:08:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:08:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:08:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-28 01:08:24,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 01:08:24,153 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 275 flow. Second operand 5 states and 117 transitions. [2024-06-28 01:08:24,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 489 flow [2024-06-28 01:08:24,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 450 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:08:24,160 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 267 flow [2024-06-28 01:08:24,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-06-28 01:08:24,161 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2024-06-28 01:08:24,161 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 267 flow [2024-06-28 01:08:24,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:08:24,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:24,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:08:24,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-06-28 01:08:24,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-06-28 01:08:24,389 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:24,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash 267220933, now seen corresponding path program 1 times [2024-06-28 01:08:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:24,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822100880] [2024-06-28 01:08:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:24,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-28 01:08:24,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:24,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822100880] [2024-06-28 01:08:24,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822100880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:08:24,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:08:24,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:08:24,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572140141] [2024-06-28 01:08:24,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:08:24,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:08:24,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:24,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:08:24,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:08:24,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-28 01:08:24,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 267 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 01:08:24,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:24,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-28 01:08:24,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:24,848 INFO L124 PetriNetUnfolderBase]: 2013/3287 cut-off events. [2024-06-28 01:08:24,849 INFO L125 PetriNetUnfolderBase]: For 3272/3272 co-relation queries the response was YES. [2024-06-28 01:08:24,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9354 conditions, 3287 events. 2013/3287 cut-off events. For 3272/3272 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16362 event pairs, 341 based on Foata normal form. 119/3399 useless extension candidates. Maximal degree in co-relation 6771. Up to 1231 conditions per place. [2024-06-28 01:08:24,862 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 86 selfloop transitions, 16 changer transitions 20/130 dead transitions. [2024-06-28 01:08:24,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 130 transitions, 806 flow [2024-06-28 01:08:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:08:24,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:08:24,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-28 01:08:24,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 01:08:24,864 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 267 flow. Second operand 8 states and 171 transitions. [2024-06-28 01:08:24,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 130 transitions, 806 flow [2024-06-28 01:08:24,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 130 transitions, 798 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:08:24,869 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 319 flow [2024-06-28 01:08:24,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=319, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-06-28 01:08:24,870 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2024-06-28 01:08:24,870 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 319 flow [2024-06-28 01:08:24,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 01:08:24,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:24,871 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1] [2024-06-28 01:08:24,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:08:24,871 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:24,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1187788515, now seen corresponding path program 2 times [2024-06-28 01:08:24,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:24,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581911015] [2024-06-28 01:08:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:24,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-06-28 01:08:24,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:24,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581911015] [2024-06-28 01:08:24,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581911015] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:24,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546077483] [2024-06-28 01:08:24,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-28 01:08:24,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:24,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:24,959 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 01:08:24,970 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 01:08:25,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-28 01:08:25,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:08:25,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-28 01:08:25,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:08:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-28 01:08:25,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-28 01:08:25,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546077483] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:08:25,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:08:25,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-06-28 01:08:25,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062090539] [2024-06-28 01:08:25,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:08:25,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 01:08:25,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:25,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 01:08:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-06-28 01:08:25,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-06-28 01:08:25,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 319 flow. Second operand has 15 states, 15 states have (on average 19.266666666666666) internal successors, (289), 15 states have internal predecessors, (289), 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 01:08:25,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:25,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-06-28 01:08:25,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:25,750 INFO L124 PetriNetUnfolderBase]: 1878/3395 cut-off events. [2024-06-28 01:08:25,750 INFO L125 PetriNetUnfolderBase]: For 4462/4462 co-relation queries the response was YES. [2024-06-28 01:08:25,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10064 conditions, 3395 events. 1878/3395 cut-off events. For 4462/4462 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 18759 event pairs, 255 based on Foata normal form. 188/3525 useless extension candidates. Maximal degree in co-relation 10018. Up to 573 conditions per place. [2024-06-28 01:08:25,769 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 130 selfloop transitions, 39 changer transitions 0/187 dead transitions. [2024-06-28 01:08:25,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 187 transitions, 1264 flow [2024-06-28 01:08:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-28 01:08:25,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-28 01:08:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 424 transitions. [2024-06-28 01:08:25,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234567901234568 [2024-06-28 01:08:25,771 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 319 flow. Second operand 18 states and 424 transitions. [2024-06-28 01:08:25,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 187 transitions, 1264 flow [2024-06-28 01:08:25,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 187 transitions, 1236 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:08:25,778 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 601 flow [2024-06-28 01:08:25,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=601, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2024-06-28 01:08:25,779 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 47 predicate places. [2024-06-28 01:08:25,779 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 601 flow [2024-06-28 01:08:25,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 19.266666666666666) internal successors, (289), 15 states have internal predecessors, (289), 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 01:08:25,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:25,779 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:08:25,804 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 01:08:25,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:25,991 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:25,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:25,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1006929772, now seen corresponding path program 3 times [2024-06-28 01:08:25,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:25,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656702499] [2024-06-28 01:08:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:25,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:26,128 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-06-28 01:08:26,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:26,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656702499] [2024-06-28 01:08:26,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656702499] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:26,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069984182] [2024-06-28 01:08:26,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-28 01:08:26,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:26,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:26,130 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 01:08:26,155 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 01:08:26,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-06-28 01:08:26,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:08:26,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-28 01:08:26,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:08:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-06-28 01:08:26,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-06-28 01:08:26,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069984182] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:08:26,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:08:26,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 15 [2024-06-28 01:08:26,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55296111] [2024-06-28 01:08:26,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:08:26,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-28 01:08:26,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:26,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-28 01:08:26,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-06-28 01:08:26,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-28 01:08:26,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 601 flow. Second operand has 15 states, 15 states have (on average 12.466666666666667) internal successors, (187), 15 states have internal predecessors, (187), 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 01:08:26,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:26,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-28 01:08:26,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:28,256 INFO L124 PetriNetUnfolderBase]: 8156/12055 cut-off events. [2024-06-28 01:08:28,256 INFO L125 PetriNetUnfolderBase]: For 44502/44502 co-relation queries the response was YES. [2024-06-28 01:08:28,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46127 conditions, 12055 events. 8156/12055 cut-off events. For 44502/44502 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 62507 event pairs, 562 based on Foata normal form. 337/12372 useless extension candidates. Maximal degree in co-relation 46071. Up to 3580 conditions per place. [2024-06-28 01:08:28,350 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 443 selfloop transitions, 93 changer transitions 11/557 dead transitions. [2024-06-28 01:08:28,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 557 transitions, 4817 flow [2024-06-28 01:08:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-06-28 01:08:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-06-28 01:08:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 707 transitions. [2024-06-28 01:08:28,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41345029239766085 [2024-06-28 01:08:28,354 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 601 flow. Second operand 38 states and 707 transitions. [2024-06-28 01:08:28,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 557 transitions, 4817 flow [2024-06-28 01:08:28,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 557 transitions, 4469 flow, removed 119 selfloop flow, removed 5 redundant places. [2024-06-28 01:08:28,422 INFO L231 Difference]: Finished difference. Result has 146 places, 172 transitions, 1457 flow [2024-06-28 01:08:28,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1457, PETRI_PLACES=146, PETRI_TRANSITIONS=172} [2024-06-28 01:08:28,423 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 101 predicate places. [2024-06-28 01:08:28,423 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 172 transitions, 1457 flow [2024-06-28 01:08:28,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.466666666666667) internal successors, (187), 15 states have internal predecessors, (187), 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 01:08:28,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:28,423 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:08:28,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-06-28 01:08:28,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:28,635 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:28,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2033716522, now seen corresponding path program 4 times [2024-06-28 01:08:28,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:28,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108032418] [2024-06-28 01:08:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:28,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:28,912 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-06-28 01:08:28,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:28,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108032418] [2024-06-28 01:08:28,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108032418] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:28,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717849669] [2024-06-28 01:08:28,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-28 01:08:28,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:28,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:28,916 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 01:08:28,918 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 01:08:29,014 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-28 01:08:29,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:08:29,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-28 01:08:29,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:08:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-06-28 01:08:29,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-06-28 01:08:29,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717849669] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:08:29,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:08:29,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-06-28 01:08:29,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99773920] [2024-06-28 01:08:29,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:08:29,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 01:08:29,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:29,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 01:08:29,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-28 01:08:29,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-28 01:08:29,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 172 transitions, 1457 flow. Second operand has 14 states, 14 states have (on average 12.285714285714286) internal successors, (172), 14 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:08:29,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:29,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-28 01:08:29,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:31,319 INFO L124 PetriNetUnfolderBase]: 9984/14819 cut-off events. [2024-06-28 01:08:31,319 INFO L125 PetriNetUnfolderBase]: For 103529/103573 co-relation queries the response was YES. [2024-06-28 01:08:31,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69454 conditions, 14819 events. 9984/14819 cut-off events. For 103529/103573 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 80446 event pairs, 956 based on Foata normal form. 134/14928 useless extension candidates. Maximal degree in co-relation 69367. Up to 5542 conditions per place. [2024-06-28 01:08:31,452 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 322 selfloop transitions, 124 changer transitions 11/467 dead transitions. [2024-06-28 01:08:31,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 467 transitions, 4536 flow [2024-06-28 01:08:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-06-28 01:08:31,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-06-28 01:08:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 469 transitions. [2024-06-28 01:08:31,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41688888888888886 [2024-06-28 01:08:31,454 INFO L175 Difference]: Start difference. First operand has 146 places, 172 transitions, 1457 flow. Second operand 25 states and 469 transitions. [2024-06-28 01:08:31,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 467 transitions, 4536 flow [2024-06-28 01:08:31,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 467 transitions, 4196 flow, removed 112 selfloop flow, removed 9 redundant places. [2024-06-28 01:08:31,785 INFO L231 Difference]: Finished difference. Result has 174 places, 232 transitions, 2221 flow [2024-06-28 01:08:31,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2221, PETRI_PLACES=174, PETRI_TRANSITIONS=232} [2024-06-28 01:08:31,786 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 129 predicate places. [2024-06-28 01:08:31,786 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 232 transitions, 2221 flow [2024-06-28 01:08:31,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.285714285714286) internal successors, (172), 14 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:08:31,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:31,787 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:08:31,798 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 01:08:31,988 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,SelfDestructingSolverStorable14 [2024-06-28 01:08:31,988 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:31,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:31,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1921405849, now seen corresponding path program 5 times [2024-06-28 01:08:31,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:31,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336255134] [2024-06-28 01:08:31,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:31,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-06-28 01:08:32,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:32,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336255134] [2024-06-28 01:08:32,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336255134] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:32,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210294210] [2024-06-28 01:08:32,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-28 01:08:32,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:32,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:32,116 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 01:08:32,141 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 01:08:32,216 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-06-28 01:08:32,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:08:32,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-28 01:08:32,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:08:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-06-28 01:08:32,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-06-28 01:08:32,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210294210] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:08:32,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:08:32,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-06-28 01:08:32,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017564709] [2024-06-28 01:08:32,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:08:32,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-06-28 01:08:32,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:32,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-06-28 01:08:32,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-06-28 01:08:32,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-06-28 01:08:32,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 232 transitions, 2221 flow. Second operand has 19 states, 19 states have (on average 18.263157894736842) internal successors, (347), 19 states have internal predecessors, (347), 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 01:08:32,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:32,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-06-28 01:08:32,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:34,592 INFO L124 PetriNetUnfolderBase]: 8103/14595 cut-off events. [2024-06-28 01:08:34,593 INFO L125 PetriNetUnfolderBase]: For 123551/124308 co-relation queries the response was YES. [2024-06-28 01:08:34,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70131 conditions, 14595 events. 8103/14595 cut-off events. For 123551/124308 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 104568 event pairs, 3154 based on Foata normal form. 324/14692 useless extension candidates. Maximal degree in co-relation 67128. Up to 7014 conditions per place. [2024-06-28 01:08:34,711 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 114 selfloop transitions, 8 changer transitions 144/378 dead transitions. [2024-06-28 01:08:34,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 378 transitions, 4060 flow [2024-06-28 01:08:34,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:08:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:08:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 294 transitions. [2024-06-28 01:08:34,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2024-06-28 01:08:34,712 INFO L175 Difference]: Start difference. First operand has 174 places, 232 transitions, 2221 flow. Second operand 13 states and 294 transitions. [2024-06-28 01:08:34,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 378 transitions, 4060 flow [2024-06-28 01:08:35,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 378 transitions, 3881 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-28 01:08:35,580 INFO L231 Difference]: Finished difference. Result has 187 places, 234 transitions, 2186 flow [2024-06-28 01:08:35,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2186, PETRI_PLACES=187, PETRI_TRANSITIONS=234} [2024-06-28 01:08:35,581 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 142 predicate places. [2024-06-28 01:08:35,581 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 234 transitions, 2186 flow [2024-06-28 01:08:35,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.263157894736842) internal successors, (347), 19 states have internal predecessors, (347), 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 01:08:35,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:35,583 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:08:35,598 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 01:08:35,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-06-28 01:08:35,787 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:35,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:35,788 INFO L85 PathProgramCache]: Analyzing trace with hash -119412860, now seen corresponding path program 6 times [2024-06-28 01:08:35,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:35,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545892148] [2024-06-28 01:08:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:35,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-06-28 01:08:35,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:35,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545892148] [2024-06-28 01:08:35,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545892148] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:35,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498981790] [2024-06-28 01:08:35,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-28 01:08:35,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:35,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:35,933 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 01:08:35,934 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 01:08:36,083 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-06-28 01:08:36,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:08:36,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-28 01:08:36,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:08:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-06-28 01:08:36,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-06-28 01:08:36,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498981790] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:08:36,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:08:36,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-06-28 01:08:36,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535855213] [2024-06-28 01:08:36,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:08:36,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-06-28 01:08:36,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:36,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-06-28 01:08:36,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-06-28 01:08:36,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-06-28 01:08:36,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 234 transitions, 2186 flow. Second operand has 19 states, 19 states have (on average 18.57894736842105) internal successors, (353), 19 states have internal predecessors, (353), 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 01:08:36,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:36,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-06-28 01:08:36,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:37,934 INFO L124 PetriNetUnfolderBase]: 5837/10673 cut-off events. [2024-06-28 01:08:37,935 INFO L125 PetriNetUnfolderBase]: For 86113/87130 co-relation queries the response was YES. [2024-06-28 01:08:38,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51432 conditions, 10673 events. 5837/10673 cut-off events. For 86113/87130 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 75797 event pairs, 1489 based on Foata normal form. 472/10943 useless extension candidates. Maximal degree in co-relation 51319. Up to 3563 conditions per place. [2024-06-28 01:08:38,054 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 247 selfloop transitions, 21 changer transitions 3/385 dead transitions. [2024-06-28 01:08:38,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 385 transitions, 4268 flow [2024-06-28 01:08:38,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:08:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:08:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 274 transitions. [2024-06-28 01:08:38,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5074074074074074 [2024-06-28 01:08:38,056 INFO L175 Difference]: Start difference. First operand has 187 places, 234 transitions, 2186 flow. Second operand 12 states and 274 transitions. [2024-06-28 01:08:38,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 385 transitions, 4268 flow [2024-06-28 01:08:38,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 385 transitions, 4016 flow, removed 122 selfloop flow, removed 8 redundant places. [2024-06-28 01:08:38,463 INFO L231 Difference]: Finished difference. Result has 183 places, 235 transitions, 2161 flow [2024-06-28 01:08:38,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2096, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2161, PETRI_PLACES=183, PETRI_TRANSITIONS=235} [2024-06-28 01:08:38,464 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 138 predicate places. [2024-06-28 01:08:38,464 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 235 transitions, 2161 flow [2024-06-28 01:08:38,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.57894736842105) internal successors, (353), 19 states have internal predecessors, (353), 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 01:08:38,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:38,465 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:08:38,489 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 01:08:38,676 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,SelfDestructingSolverStorable16 [2024-06-28 01:08:38,677 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:38,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1974456014, now seen corresponding path program 7 times [2024-06-28 01:08:38,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:38,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699076048] [2024-06-28 01:08:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:38,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-06-28 01:08:38,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:38,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699076048] [2024-06-28 01:08:38,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699076048] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:38,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218667463] [2024-06-28 01:08:38,833 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-28 01:08:38,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:38,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:38,853 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 01:08:38,855 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 01:08:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:38,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-28 01:08:38,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:08:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-06-28 01:08:39,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-06-28 01:08:39,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218667463] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:08:39,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:08:39,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-06-28 01:08:39,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037819250] [2024-06-28 01:08:39,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:08:39,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-06-28 01:08:39,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:39,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-06-28 01:08:39,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-06-28 01:08:39,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-06-28 01:08:39,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 235 transitions, 2161 flow. Second operand has 19 states, 19 states have (on average 18.42105263157895) internal successors, (350), 19 states have internal predecessors, (350), 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 01:08:39,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:39,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-06-28 01:08:39,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:41,056 INFO L124 PetriNetUnfolderBase]: 7331/12904 cut-off events. [2024-06-28 01:08:41,056 INFO L125 PetriNetUnfolderBase]: For 100018/100321 co-relation queries the response was YES. [2024-06-28 01:08:41,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62608 conditions, 12904 events. 7331/12904 cut-off events. For 100018/100321 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 87009 event pairs, 1117 based on Foata normal form. 131/12870 useless extension candidates. Maximal degree in co-relation 62500. Up to 3015 conditions per place. [2024-06-28 01:08:41,169 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 125 selfloop transitions, 59 changer transitions 1/294 dead transitions. [2024-06-28 01:08:41,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 294 transitions, 2991 flow [2024-06-28 01:08:41,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:08:41,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:08:41,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 277 transitions. [2024-06-28 01:08:41,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735042735042735 [2024-06-28 01:08:41,171 INFO L175 Difference]: Start difference. First operand has 183 places, 235 transitions, 2161 flow. Second operand 13 states and 277 transitions. [2024-06-28 01:08:41,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 294 transitions, 2991 flow [2024-06-28 01:08:41,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 294 transitions, 2888 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-28 01:08:41,545 INFO L231 Difference]: Finished difference. Result has 187 places, 240 transitions, 2312 flow [2024-06-28 01:08:41,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2312, PETRI_PLACES=187, PETRI_TRANSITIONS=240} [2024-06-28 01:08:41,545 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 142 predicate places. [2024-06-28 01:08:41,546 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 240 transitions, 2312 flow [2024-06-28 01:08:41,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.42105263157895) internal successors, (350), 19 states have internal predecessors, (350), 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 01:08:41,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:41,546 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:08:41,569 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 01:08:41,760 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,SelfDestructingSolverStorable17 [2024-06-28 01:08:41,760 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:41,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:41,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1441294193, now seen corresponding path program 8 times [2024-06-28 01:08:41,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:41,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032043874] [2024-06-28 01:08:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:41,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:42,069 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-06-28 01:08:42,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:42,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032043874] [2024-06-28 01:08:42,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032043874] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:42,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123573248] [2024-06-28 01:08:42,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-28 01:08:42,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:42,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:42,072 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-28 01:08:42,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-06-28 01:08:42,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-28 01:08:42,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:08:42,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-28 01:08:42,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:08:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-06-28 01:08:42,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-06-28 01:08:42,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123573248] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:08:42,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:08:42,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2024-06-28 01:08:42,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242258606] [2024-06-28 01:08:42,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:08:42,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-06-28 01:08:42,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:42,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-06-28 01:08:42,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-06-28 01:08:42,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-28 01:08:42,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 240 transitions, 2312 flow. Second operand has 17 states, 17 states have (on average 12.352941176470589) internal successors, (210), 17 states have internal predecessors, (210), 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 01:08:42,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:42,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-28 01:08:42,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:46,624 INFO L124 PetriNetUnfolderBase]: 16538/24525 cut-off events. [2024-06-28 01:08:46,624 INFO L125 PetriNetUnfolderBase]: For 180937/181041 co-relation queries the response was YES. [2024-06-28 01:08:46,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118456 conditions, 24525 events. 16538/24525 cut-off events. For 180937/181041 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 140225 event pairs, 1042 based on Foata normal form. 210/24698 useless extension candidates. Maximal degree in co-relation 118351. Up to 5636 conditions per place. [2024-06-28 01:08:46,897 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 560 selfloop transitions, 212 changer transitions 90/875 dead transitions. [2024-06-28 01:08:46,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 875 transitions, 9200 flow [2024-06-28 01:08:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-06-28 01:08:46,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-06-28 01:08:46,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 935 transitions. [2024-06-28 01:08:46,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-28 01:08:46,900 INFO L175 Difference]: Start difference. First operand has 187 places, 240 transitions, 2312 flow. Second operand 51 states and 935 transitions. [2024-06-28 01:08:46,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 875 transitions, 9200 flow [2024-06-28 01:08:47,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 875 transitions, 9089 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:08:47,853 INFO L231 Difference]: Finished difference. Result has 246 places, 325 transitions, 3782 flow [2024-06-28 01:08:47,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3782, PETRI_PLACES=246, PETRI_TRANSITIONS=325} [2024-06-28 01:08:47,854 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 201 predicate places. [2024-06-28 01:08:47,854 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 325 transitions, 3782 flow [2024-06-28 01:08:47,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.352941176470589) internal successors, (210), 17 states have internal predecessors, (210), 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 01:08:47,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:08:47,855 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:08:47,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-06-28 01:08:48,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:48,058 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:08:48,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:08:48,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1025097744, now seen corresponding path program 9 times [2024-06-28 01:08:48,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:08:48,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953462562] [2024-06-28 01:08:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:08:48,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:08:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:08:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-06-28 01:08:48,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:08:48,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953462562] [2024-06-28 01:08:48,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953462562] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:08:48,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669502027] [2024-06-28 01:08:48,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-28 01:08:48,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:08:48,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:08:48,224 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-28 01:08:48,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-06-28 01:08:48,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-06-28 01:08:48,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 01:08:48,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-28 01:08:48,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:08:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-06-28 01:08:48,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:08:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-06-28 01:08:48,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669502027] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:08:48,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:08:48,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2024-06-28 01:08:48,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258558982] [2024-06-28 01:08:48,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:08:48,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-06-28 01:08:48,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:08:48,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-06-28 01:08:48,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-06-28 01:08:48,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-28 01:08:48,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 325 transitions, 3782 flow. Second operand has 17 states, 17 states have (on average 14.823529411764707) internal successors, (252), 17 states have internal predecessors, (252), 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 01:08:48,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:08:48,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-28 01:08:48,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:08:58,368 INFO L124 PetriNetUnfolderBase]: 36322/51335 cut-off events. [2024-06-28 01:08:58,369 INFO L125 PetriNetUnfolderBase]: For 586111/586111 co-relation queries the response was YES. [2024-06-28 01:08:58,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287157 conditions, 51335 events. 36322/51335 cut-off events. For 586111/586111 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 288393 event pairs, 959 based on Foata normal form. 708/52043 useless extension candidates. Maximal degree in co-relation 268863. Up to 9349 conditions per place. [2024-06-28 01:08:58,933 INFO L140 encePairwiseOnDemand]: 27/45 looper letters, 0 selfloop transitions, 0 changer transitions 1610/1610 dead transitions. [2024-06-28 01:08:58,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 1610 transitions, 19363 flow [2024-06-28 01:08:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-06-28 01:08:58,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-06-28 01:08:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1207 transitions. [2024-06-28 01:08:58,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4003316749585406 [2024-06-28 01:08:58,950 INFO L175 Difference]: Start difference. First operand has 246 places, 325 transitions, 3782 flow. Second operand 67 states and 1207 transitions. [2024-06-28 01:08:58,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 1610 transitions, 19363 flow [2024-06-28 01:09:07,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 1610 transitions, 17932 flow, removed 312 selfloop flow, removed 24 redundant places. [2024-06-28 01:09:07,119 INFO L231 Difference]: Finished difference. Result has 280 places, 0 transitions, 0 flow [2024-06-28 01:09:07,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=0, PETRI_PLACES=280, PETRI_TRANSITIONS=0} [2024-06-28 01:09:07,120 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 235 predicate places. [2024-06-28 01:09:07,120 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 0 transitions, 0 flow [2024-06-28 01:09:07,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.823529411764707) internal successors, (252), 17 states have internal predecessors, (252), 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 01:09:07,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 7 remaining) [2024-06-28 01:09:07,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-06-28 01:09:07,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-28 01:09:07,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-06-28 01:09:07,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-28 01:09:07,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-28 01:09:07,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2024-06-28 01:09:07,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-06-28 01:09:07,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-06-28 01:09:07,336 INFO L445 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:09:07,348 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 01:09:07,348 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 01:09:07,360 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-28 01:09:07,361 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-28 01:09:07,362 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 01:09:07 BasicIcfg [2024-06-28 01:09:07,362 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 01:09:07,362 INFO L158 Benchmark]: Toolchain (without parser) took 51453.78ms. Allocated memory was 136.3MB in the beginning and 11.8GB in the end (delta: 11.6GB). Free memory was 62.5MB in the beginning and 9.4GB in the end (delta: -9.3GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2024-06-28 01:09:07,362 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory is still 101.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:09:07,362 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 136.3MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:09:07,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.98ms. Allocated memory was 136.3MB in the beginning and 192.9MB in the end (delta: 56.6MB). Free memory was 62.3MB in the beginning and 153.0MB in the end (delta: -90.7MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2024-06-28 01:09:07,363 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.15ms. Allocated memory is still 192.9MB. Free memory was 153.0MB in the beginning and 150.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:09:07,363 INFO L158 Benchmark]: Boogie Preprocessor took 42.03ms. Allocated memory is still 192.9MB. Free memory was 150.9MB in the beginning and 148.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:09:07,363 INFO L158 Benchmark]: RCFGBuilder took 511.27ms. Allocated memory is still 192.9MB. Free memory was 148.3MB in the beginning and 104.8MB in the end (delta: 43.5MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-06-28 01:09:07,364 INFO L158 Benchmark]: TraceAbstraction took 50565.79ms. Allocated memory was 192.9MB in the beginning and 11.8GB in the end (delta: 11.6GB). Free memory was 104.3MB in the beginning and 9.4GB in the end (delta: -9.3GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2024-06-28 01:09:07,365 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory is still 101.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 136.3MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.98ms. Allocated memory was 136.3MB in the beginning and 192.9MB in the end (delta: 56.6MB). Free memory was 62.3MB in the beginning and 153.0MB in the end (delta: -90.7MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.15ms. Allocated memory is still 192.9MB. Free memory was 153.0MB in the beginning and 150.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.03ms. Allocated memory is still 192.9MB. Free memory was 150.9MB in the beginning and 148.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 511.27ms. Allocated memory is still 192.9MB. Free memory was 148.3MB in the beginning and 104.8MB in the end (delta: 43.5MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 50565.79ms. Allocated memory was 192.9MB in the beginning and 11.8GB in the end (delta: 11.6GB). Free memory was 104.3MB in the beginning and 9.4GB in the end (delta: -9.3GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 96]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 97]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 98]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 103]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 60 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 50.4s, OverallIterations: 20, TraceHistogramMax: 4, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 41.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2766 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2664 mSDsluCounter, 1200 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1129 mSDsCounter, 176 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9670 IncrementalHoareTripleChecker+Invalid, 9846 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 176 mSolverCounterUnsat, 71 mSDtfsCounter, 9670 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1528 GetRequests, 1141 SyntacticMatches, 30 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3900 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3782occurred in iteration=19, InterpolantAutomatonStates: 307, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1293 NumberOfCodeBlocks, 1280 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 1816 ConstructedInterpolants, 0 QuantifiedInterpolants, 5697 SizeOfPredicates, 41 NumberOfNonLiveVariables, 3297 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 46 InterpolantComputations, 11 PerfectInterpolantSequences, 704/931 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 01:09:07,397 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 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE