./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/13-privatized_27-multiple-protecting2_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/goblint-regression/13-privatized_27-multiple-protecting2_true.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/13-privatized_27-multiple-protecting2_true.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-dev-958ec4d-m [2024-02-07 14:26:24,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:26:24,580 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:26:24,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:26:24,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:26:24,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:26:24,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:26:24,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:26:24,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:26:24,611 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:26:24,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:26:24,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:26:24,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:26:24,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:26:24,613 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:26:24,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:26:24,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:26:24,614 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:26:24,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:26:24,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:26:24,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:26:24,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:26:24,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:26:24,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:26:24,615 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:26:24,615 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:26:24,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:26:24,616 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:26:24,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:26:24,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:26:24,617 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:26:24,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:26:24,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:26:24,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:26:24,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:26:24,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:26:24,618 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:26:24,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:26:24,618 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:26:24,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:26:24,619 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:26:24,619 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:26:24,619 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:26:24,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:26:24,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:26:24,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:26:24,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:26:24,818 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:26:24,819 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:26:24,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-02-07 14:26:25,841 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:26:26,083 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:26:26,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-02-07 14:26:26,103 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87e07d264/d3817a37b4c8441bbf57180d1af5f198/FLAG09767ad1b [2024-02-07 14:26:26,118 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87e07d264/d3817a37b4c8441bbf57180d1af5f198 [2024-02-07 14:26:26,120 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:26:26,121 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:26:26,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/13-privatized_27-multiple-protecting2_true.yml/witness.yml [2024-02-07 14:26:26,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:26:26,190 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:26:26,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:26:26,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:26:26,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:26:26,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:26:26" (1/2) ... [2024-02-07 14:26:26,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef9b9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:26, skipping insertion in model container [2024-02-07 14:26:26,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:26:26" (1/2) ... [2024-02-07 14:26:26,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e2bdae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:26, skipping insertion in model container [2024-02-07 14:26:26,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:26:26" (2/2) ... [2024-02-07 14:26:26,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef9b9fe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:26, skipping insertion in model container [2024-02-07 14:26:26,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:26:26" (2/2) ... [2024-02-07 14:26:26,199 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:26:26,231 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:26:26,232 INFO L76 edCorrectnessWitness]: Location invariant before [L721-L721] g2 == 0 [2024-02-07 14:26:26,232 INFO L76 edCorrectnessWitness]: Location invariant before [L718-L718] g1 == 0 [2024-02-07 14:26:26,232 INFO L76 edCorrectnessWitness]: Location invariant before [L689-L689] g1 == 1 [2024-02-07 14:26:26,232 INFO L76 edCorrectnessWitness]: Location invariant before [L714-L714] g1 == 0 [2024-02-07 14:26:26,233 INFO L76 edCorrectnessWitness]: Location invariant before [L688-L688] g1 == 0 [2024-02-07 14:26:26,234 INFO L76 edCorrectnessWitness]: Location invariant before [L700-L700] g2 == 1 [2024-02-07 14:26:26,234 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] g2 == 0 [2024-02-07 14:26:26,234 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] g2 == 1 [2024-02-07 14:26:26,234 INFO L76 edCorrectnessWitness]: Location invariant before [L699-L699] g2 == 0 [2024-02-07 14:26:26,234 INFO L76 edCorrectnessWitness]: Location invariant before [L691-L691] g1 == 1 [2024-02-07 14:26:26,234 INFO L76 edCorrectnessWitness]: Location invariant before [L725-L725] g1 == 0 [2024-02-07 14:26:26,235 INFO L76 edCorrectnessWitness]: Location invariant before [L692-L692] g1 == 0 [2024-02-07 14:26:26,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:26:26,421 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2024-02-07 14:26:26,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:26:26,546 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:26:26,559 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:26:26,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:26:26,642 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:26:26,643 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:26 WrapperNode [2024-02-07 14:26:26,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:26:26,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:26:26,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:26:26,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:26:26,651 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 07.02 02:26:26" (1/1) ... [2024-02-07 14:26:26,663 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 07.02 02:26:26" (1/1) ... [2024-02-07 14:26:26,690 INFO L138 Inliner]: procedures = 164, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 125 [2024-02-07 14:26:26,690 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:26:26,691 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:26:26,691 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:26:26,691 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:26:26,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:26" (1/1) ... [2024-02-07 14:26:26,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:26" (1/1) ... [2024-02-07 14:26:26,703 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:26" (1/1) ... [2024-02-07 14:26:26,715 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 5, 5, 2, 5, 2]. 24 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 0, 5, 0]. The 2 writes are split as follows [0, 0, 0, 1, 0, 1]. [2024-02-07 14:26:26,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:26" (1/1) ... [2024-02-07 14:26:26,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:26" (1/1) ... [2024-02-07 14:26:26,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:26" (1/1) ... [2024-02-07 14:26:26,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:26" (1/1) ... [2024-02-07 14:26:26,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:26" (1/1) ... [2024-02-07 14:26:26,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:26" (1/1) ... [2024-02-07 14:26:26,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:26:26,735 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:26:26,735 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:26:26,735 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:26:26,736 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:26" (1/1) ... [2024-02-07 14:26:26,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:26:26,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:26:26,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 14:26:26,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 14:26:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:26:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:26:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:26:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:26:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:26:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:26:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-02-07 14:26:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-02-07 14:26:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:26:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:26:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:26:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:26:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:26:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:26:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:26:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:26:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:26:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 14:26:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 14:26:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:26:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:26:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:26:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:26:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:26:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:26:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:26:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:26:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:26:26,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:26:26,793 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:26:26,909 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:26:26,911 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:26:27,144 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:26:27,145 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:26:27,350 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:26:27,364 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:26:27,364 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:26:27 BoogieIcfgContainer [2024-02-07 14:26:27,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:26:27,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:26:27,366 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:26:27,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:26:27,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:26:26" (1/4) ... [2024-02-07 14:26:27,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de2653e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:26:27, skipping insertion in model container [2024-02-07 14:26:27,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:26:26" (2/4) ... [2024-02-07 14:26:27,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de2653e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:26:27, skipping insertion in model container [2024-02-07 14:26:27,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:26" (3/4) ... [2024-02-07 14:26:27,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de2653e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:26:27, skipping insertion in model container [2024-02-07 14:26:27,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:26:27" (4/4) ... [2024-02-07 14:26:27,381 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2024-02-07 14:26:27,395 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:26:27,395 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-02-07 14:26:27,395 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:26:27,449 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 14:26:27,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 105 transitions, 224 flow [2024-02-07 14:26:27,530 INFO L124 PetriNetUnfolderBase]: 4/103 cut-off events. [2024-02-07 14:26:27,530 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 14:26:27,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 103 events. 4/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 183 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2024-02-07 14:26:27,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 105 transitions, 224 flow [2024-02-07 14:26:27,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 101 transitions, 211 flow [2024-02-07 14:26:27,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:26:27,552 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;@54f0d444, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:26:27,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-02-07 14:26:27,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:26:27,563 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2024-02-07 14:26:27,563 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:26:27,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:27,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:26:27,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:26:27,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:27,570 INFO L85 PathProgramCache]: Analyzing trace with hash -885708713, now seen corresponding path program 1 times [2024-02-07 14:26:27,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:27,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28392429] [2024-02-07 14:26:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:27,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:27,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:27,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28392429] [2024-02-07 14:26:27,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28392429] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:27,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:27,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:26:27,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049412538] [2024-02-07 14:26:27,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:27,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:26:27,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:27,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:26:27,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:26:27,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 105 [2024-02-07 14:26:27,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:27,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:27,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 105 [2024-02-07 14:26:27,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:29,169 INFO L124 PetriNetUnfolderBase]: 6292/13515 cut-off events. [2024-02-07 14:26:29,170 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-02-07 14:26:29,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23682 conditions, 13515 events. 6292/13515 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 118053 event pairs, 4128 based on Foata normal form. 1011/13954 useless extension candidates. Maximal degree in co-relation 23586. Up to 7285 conditions per place. [2024-02-07 14:26:29,253 INFO L140 encePairwiseOnDemand]: 89/105 looper letters, 80 selfloop transitions, 6 changer transitions 0/130 dead transitions. [2024-02-07 14:26:29,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 130 transitions, 444 flow [2024-02-07 14:26:29,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:26:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:26:29,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2024-02-07 14:26:29,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7587301587301587 [2024-02-07 14:26:29,268 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 211 flow. Second operand 3 states and 239 transitions. [2024-02-07 14:26:29,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 130 transitions, 444 flow [2024-02-07 14:26:29,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 130 transitions, 438 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:26:29,278 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 238 flow [2024-02-07 14:26:29,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2024-02-07 14:26:29,283 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -1 predicate places. [2024-02-07 14:26:29,283 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 238 flow [2024-02-07 14:26:29,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:29,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:29,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:26:29,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:26:29,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:26:29,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:29,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1687165772, now seen corresponding path program 1 times [2024-02-07 14:26:29,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:29,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982241742] [2024-02-07 14:26:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:29,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:29,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:29,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982241742] [2024-02-07 14:26:29,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982241742] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:29,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:29,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:26:29,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299218605] [2024-02-07 14:26:29,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:29,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:26:29,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:29,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:26:29,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:26:29,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 105 [2024-02-07 14:26:29,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:29,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:29,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 105 [2024-02-07 14:26:29,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:30,287 INFO L124 PetriNetUnfolderBase]: 5148/10303 cut-off events. [2024-02-07 14:26:30,287 INFO L125 PetriNetUnfolderBase]: For 1876/1876 co-relation queries the response was YES. [2024-02-07 14:26:30,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20167 conditions, 10303 events. 5148/10303 cut-off events. For 1876/1876 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 81205 event pairs, 3444 based on Foata normal form. 644/10647 useless extension candidates. Maximal degree in co-relation 9656. Up to 5381 conditions per place. [2024-02-07 14:26:30,325 INFO L140 encePairwiseOnDemand]: 97/105 looper letters, 78 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2024-02-07 14:26:30,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 123 transitions, 440 flow [2024-02-07 14:26:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:26:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:26:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-02-07 14:26:30,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-02-07 14:26:30,327 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 238 flow. Second operand 4 states and 262 transitions. [2024-02-07 14:26:30,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 123 transitions, 440 flow [2024-02-07 14:26:30,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 123 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:26:30,337 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 216 flow [2024-02-07 14:26:30,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2024-02-07 14:26:30,338 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -2 predicate places. [2024-02-07 14:26:30,338 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 216 flow [2024-02-07 14:26:30,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:30,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:30,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:26:30,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:26:30,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:26:30,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:30,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1201625829, now seen corresponding path program 1 times [2024-02-07 14:26:30,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:30,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251451649] [2024-02-07 14:26:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:30,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:30,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:30,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251451649] [2024-02-07 14:26:30,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251451649] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:30,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:30,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:26:30,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418100240] [2024-02-07 14:26:30,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:30,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:26:30,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:30,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:26:30,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:26:30,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 105 [2024-02-07 14:26:30,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:30,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:30,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 105 [2024-02-07 14:26:30,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:31,337 INFO L124 PetriNetUnfolderBase]: 5690/12173 cut-off events. [2024-02-07 14:26:31,337 INFO L125 PetriNetUnfolderBase]: For 2354/2354 co-relation queries the response was YES. [2024-02-07 14:26:31,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23206 conditions, 12173 events. 5690/12173 cut-off events. For 2354/2354 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 104302 event pairs, 3734 based on Foata normal form. 212/11994 useless extension candidates. Maximal degree in co-relation 9443. Up to 6351 conditions per place. [2024-02-07 14:26:31,385 INFO L140 encePairwiseOnDemand]: 97/105 looper letters, 80 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2024-02-07 14:26:31,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 126 transitions, 465 flow [2024-02-07 14:26:31,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:26:31,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:26:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2024-02-07 14:26:31,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7396825396825397 [2024-02-07 14:26:31,388 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 216 flow. Second operand 3 states and 233 transitions. [2024-02-07 14:26:31,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 126 transitions, 465 flow [2024-02-07 14:26:31,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 126 transitions, 455 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:26:31,397 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 230 flow [2024-02-07 14:26:31,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2024-02-07 14:26:31,398 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -3 predicate places. [2024-02-07 14:26:31,398 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 230 flow [2024-02-07 14:26:31,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:31,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:31,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:26:31,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:26:31,400 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:26:31,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:31,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1404304431, now seen corresponding path program 1 times [2024-02-07 14:26:31,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:31,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970398831] [2024-02-07 14:26:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:31,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:31,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:31,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970398831] [2024-02-07 14:26:31,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970398831] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:31,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:31,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:26:31,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230423794] [2024-02-07 14:26:31,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:31,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:26:31,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:31,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:26:31,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:26:31,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 105 [2024-02-07 14:26:31,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:31,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:31,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 105 [2024-02-07 14:26:31,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:32,284 INFO L124 PetriNetUnfolderBase]: 5122/10273 cut-off events. [2024-02-07 14:26:32,285 INFO L125 PetriNetUnfolderBase]: For 2514/2514 co-relation queries the response was YES. [2024-02-07 14:26:32,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20866 conditions, 10273 events. 5122/10273 cut-off events. For 2514/2514 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 81306 event pairs, 3378 based on Foata normal form. 560/10554 useless extension candidates. Maximal degree in co-relation 8009. Up to 5363 conditions per place. [2024-02-07 14:26:32,324 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 66 selfloop transitions, 3 changer transitions 13/121 dead transitions. [2024-02-07 14:26:32,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 121 transitions, 457 flow [2024-02-07 14:26:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:26:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:26:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 268 transitions. [2024-02-07 14:26:32,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-02-07 14:26:32,326 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 230 flow. Second operand 4 states and 268 transitions. [2024-02-07 14:26:32,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 121 transitions, 457 flow [2024-02-07 14:26:32,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 121 transitions, 451 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:26:32,329 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 205 flow [2024-02-07 14:26:32,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=100, PETRI_TRANSITIONS=82} [2024-02-07 14:26:32,330 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -4 predicate places. [2024-02-07 14:26:32,330 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 205 flow [2024-02-07 14:26:32,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:32,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:32,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:26:32,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:26:32,331 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:26:32,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:32,331 INFO L85 PathProgramCache]: Analyzing trace with hash 169938178, now seen corresponding path program 1 times [2024-02-07 14:26:32,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:32,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453777407] [2024-02-07 14:26:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:32,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:32,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:32,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453777407] [2024-02-07 14:26:32,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453777407] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:32,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:32,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:26:32,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223713071] [2024-02-07 14:26:32,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:32,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:26:32,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:32,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:26:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:26:32,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 105 [2024-02-07 14:26:32,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:32,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:32,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 105 [2024-02-07 14:26:32,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:33,017 INFO L124 PetriNetUnfolderBase]: 5184/9581 cut-off events. [2024-02-07 14:26:33,018 INFO L125 PetriNetUnfolderBase]: For 2680/2680 co-relation queries the response was YES. [2024-02-07 14:26:33,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20419 conditions, 9581 events. 5184/9581 cut-off events. For 2680/2680 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 70717 event pairs, 2368 based on Foata normal form. 0/9519 useless extension candidates. Maximal degree in co-relation 9760. Up to 3657 conditions per place. [2024-02-07 14:26:33,058 INFO L140 encePairwiseOnDemand]: 91/105 looper letters, 90 selfloop transitions, 15 changer transitions 3/133 dead transitions. [2024-02-07 14:26:33,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 133 transitions, 557 flow [2024-02-07 14:26:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:26:33,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:26:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 306 transitions. [2024-02-07 14:26:33,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5828571428571429 [2024-02-07 14:26:33,060 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 205 flow. Second operand 5 states and 306 transitions. [2024-02-07 14:26:33,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 133 transitions, 557 flow [2024-02-07 14:26:33,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 133 transitions, 539 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:26:33,066 INFO L231 Difference]: Finished difference. Result has 86 places, 78 transitions, 225 flow [2024-02-07 14:26:33,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=86, PETRI_TRANSITIONS=78} [2024-02-07 14:26:33,068 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -18 predicate places. [2024-02-07 14:26:33,068 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 78 transitions, 225 flow [2024-02-07 14:26:33,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:33,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:33,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:26:33,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:26:33,069 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:26:33,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:33,070 INFO L85 PathProgramCache]: Analyzing trace with hash -411264611, now seen corresponding path program 1 times [2024-02-07 14:26:33,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:33,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556622255] [2024-02-07 14:26:33,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:33,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:33,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:33,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556622255] [2024-02-07 14:26:33,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556622255] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:33,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:33,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:26:33,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382945619] [2024-02-07 14:26:33,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:33,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:26:33,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:33,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:26:33,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:26:33,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-02-07 14:26:33,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 78 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:33,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:33,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-02-07 14:26:33,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:33,522 INFO L124 PetriNetUnfolderBase]: 1616/3858 cut-off events. [2024-02-07 14:26:33,523 INFO L125 PetriNetUnfolderBase]: For 1194/1194 co-relation queries the response was YES. [2024-02-07 14:26:33,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7824 conditions, 3858 events. 1616/3858 cut-off events. For 1194/1194 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 28423 event pairs, 476 based on Foata normal form. 212/4018 useless extension candidates. Maximal degree in co-relation 5202. Up to 2121 conditions per place. [2024-02-07 14:26:33,535 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 73 selfloop transitions, 6 changer transitions 1/113 dead transitions. [2024-02-07 14:26:33,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 113 transitions, 487 flow [2024-02-07 14:26:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:26:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:26:33,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2024-02-07 14:26:33,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-02-07 14:26:33,537 INFO L175 Difference]: Start difference. First operand has 86 places, 78 transitions, 225 flow. Second operand 4 states and 288 transitions. [2024-02-07 14:26:33,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 113 transitions, 487 flow [2024-02-07 14:26:33,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 113 transitions, 472 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-02-07 14:26:33,540 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 240 flow [2024-02-07 14:26:33,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2024-02-07 14:26:33,541 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -17 predicate places. [2024-02-07 14:26:33,541 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 240 flow [2024-02-07 14:26:33,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:33,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:33,542 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] [2024-02-07 14:26:33,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:26:33,542 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:26:33,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1216786051, now seen corresponding path program 1 times [2024-02-07 14:26:33,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:33,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038406145] [2024-02-07 14:26:33,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:33,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:33,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:33,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038406145] [2024-02-07 14:26:33,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038406145] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:33,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:33,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:26:33,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229839712] [2024-02-07 14:26:33,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:33,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:26:33,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:33,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:26:33,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:26:33,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-02-07 14:26:33,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:33,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:33,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-02-07 14:26:33,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:33,876 INFO L124 PetriNetUnfolderBase]: 970/2398 cut-off events. [2024-02-07 14:26:33,877 INFO L125 PetriNetUnfolderBase]: For 853/853 co-relation queries the response was YES. [2024-02-07 14:26:33,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5013 conditions, 2398 events. 970/2398 cut-off events. For 853/853 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 15863 event pairs, 210 based on Foata normal form. 64/2435 useless extension candidates. Maximal degree in co-relation 2603. Up to 1652 conditions per place. [2024-02-07 14:26:33,884 INFO L140 encePairwiseOnDemand]: 101/105 looper letters, 39 selfloop transitions, 4 changer transitions 16/85 dead transitions. [2024-02-07 14:26:33,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 85 transitions, 349 flow [2024-02-07 14:26:33,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:26:33,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:26:33,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2024-02-07 14:26:33,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-02-07 14:26:33,886 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 240 flow. Second operand 4 states and 266 transitions. [2024-02-07 14:26:33,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 85 transitions, 349 flow [2024-02-07 14:26:33,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 325 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-07 14:26:33,888 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 154 flow [2024-02-07 14:26:33,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2024-02-07 14:26:33,889 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -23 predicate places. [2024-02-07 14:26:33,889 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 154 flow [2024-02-07 14:26:33,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:33,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:33,890 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] [2024-02-07 14:26:33,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:26:33,890 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:26:33,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:33,891 INFO L85 PathProgramCache]: Analyzing trace with hash 112298454, now seen corresponding path program 1 times [2024-02-07 14:26:33,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:33,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160472876] [2024-02-07 14:26:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:33,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:34,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:34,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160472876] [2024-02-07 14:26:34,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160472876] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:34,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:34,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:26:34,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999029241] [2024-02-07 14:26:34,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:34,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:26:34,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:34,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:26:34,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:26:34,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-02-07 14:26:34,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:34,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:34,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-02-07 14:26:34,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:34,155 INFO L124 PetriNetUnfolderBase]: 449/1231 cut-off events. [2024-02-07 14:26:34,155 INFO L125 PetriNetUnfolderBase]: For 375/375 co-relation queries the response was YES. [2024-02-07 14:26:34,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2497 conditions, 1231 events. 449/1231 cut-off events. For 375/375 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7010 event pairs, 177 based on Foata normal form. 110/1320 useless extension candidates. Maximal degree in co-relation 1148. Up to 498 conditions per place. [2024-02-07 14:26:34,158 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 26 selfloop transitions, 12 changer transitions 20/81 dead transitions. [2024-02-07 14:26:34,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 326 flow [2024-02-07 14:26:34,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:26:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:26:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 274 transitions. [2024-02-07 14:26:34,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2024-02-07 14:26:34,160 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 154 flow. Second operand 4 states and 274 transitions. [2024-02-07 14:26:34,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 326 flow [2024-02-07 14:26:34,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 81 transitions, 297 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-07 14:26:34,162 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 142 flow [2024-02-07 14:26:34,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=136, 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=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2024-02-07 14:26:34,164 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -34 predicate places. [2024-02-07 14:26:34,164 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 142 flow [2024-02-07 14:26:34,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:34,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:34,165 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] [2024-02-07 14:26:34,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:26:34,165 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 23 more)] === [2024-02-07 14:26:34,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:34,166 INFO L85 PathProgramCache]: Analyzing trace with hash 266412183, now seen corresponding path program 1 times [2024-02-07 14:26:34,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:34,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595430116] [2024-02-07 14:26:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:34,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:34,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:34,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:34,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595430116] [2024-02-07 14:26:34,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595430116] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:34,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:34,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:26:34,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602012120] [2024-02-07 14:26:34,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:34,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:26:34,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:34,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:26:34,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:26:34,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-02-07 14:26:34,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:34,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:34,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-02-07 14:26:34,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:34,449 INFO L124 PetriNetUnfolderBase]: 151/474 cut-off events. [2024-02-07 14:26:34,449 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-02-07 14:26:34,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 474 events. 151/474 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2271 event pairs, 32 based on Foata normal form. 30/496 useless extension candidates. Maximal degree in co-relation 367. Up to 243 conditions per place. [2024-02-07 14:26:34,450 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2024-02-07 14:26:34,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 274 flow [2024-02-07 14:26:34,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:26:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:26:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-02-07 14:26:34,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-02-07 14:26:34,452 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 142 flow. Second operand 4 states and 258 transitions. [2024-02-07 14:26:34,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 274 flow [2024-02-07 14:26:34,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 248 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 14:26:34,453 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2024-02-07 14:26:34,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2024-02-07 14:26:34,454 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -44 predicate places. [2024-02-07 14:26:34,454 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2024-02-07 14:26:34,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:26:34,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 26 remaining) [2024-02-07 14:26:34,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 26 remaining) [2024-02-07 14:26:34,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 26 remaining) [2024-02-07 14:26:34,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 26 remaining) [2024-02-07 14:26:34,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 26 remaining) [2024-02-07 14:26:34,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (20 of 26 remaining) [2024-02-07 14:26:34,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 26 remaining) [2024-02-07 14:26:34,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (18 of 26 remaining) [2024-02-07 14:26:34,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 26 remaining) [2024-02-07 14:26:34,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (16 of 26 remaining) [2024-02-07 14:26:34,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 26 remaining) [2024-02-07 14:26:34,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (14 of 26 remaining) [2024-02-07 14:26:34,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 26 remaining) [2024-02-07 14:26:34,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2024-02-07 14:26:34,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 26 remaining) [2024-02-07 14:26:34,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 26 remaining) [2024-02-07 14:26:34,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 26 remaining) [2024-02-07 14:26:34,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 26 remaining) [2024-02-07 14:26:34,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 26 remaining) [2024-02-07 14:26:34,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 26 remaining) [2024-02-07 14:26:34,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 26 remaining) [2024-02-07 14:26:34,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 26 remaining) [2024-02-07 14:26:34,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 26 remaining) [2024-02-07 14:26:34,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 26 remaining) [2024-02-07 14:26:34,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 26 remaining) [2024-02-07 14:26:34,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 26 remaining) [2024-02-07 14:26:34,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:26:34,461 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:26:34,465 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:26:34,466 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:26:34,469 INFO L503 ceAbstractionStarter]: Automizer considered 12 witness invariants [2024-02-07 14:26:34,469 INFO L504 ceAbstractionStarter]: WitnessConsidered=12 [2024-02-07 14:26:34,469 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:26:34 BasicIcfg [2024-02-07 14:26:34,470 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:26:34,470 INFO L158 Benchmark]: Toolchain (without parser) took 8280.27ms. Allocated memory was 144.7MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 116.1MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 645.4MB. Max. memory is 16.1GB. [2024-02-07 14:26:34,470 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:26:34,470 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 144.7MB. Free memory was 116.7MB in the beginning and 116.6MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:26:34,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.94ms. Allocated memory is still 144.7MB. Free memory was 115.4MB in the beginning and 90.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-02-07 14:26:34,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.24ms. Allocated memory is still 144.7MB. Free memory was 90.2MB in the beginning and 88.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:26:34,471 INFO L158 Benchmark]: Boogie Preprocessor took 43.44ms. Allocated memory is still 144.7MB. Free memory was 88.1MB in the beginning and 85.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:26:34,471 INFO L158 Benchmark]: RCFGBuilder took 629.94ms. Allocated memory is still 144.7MB. Free memory was 85.3MB in the beginning and 99.6MB in the end (delta: -14.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-02-07 14:26:34,472 INFO L158 Benchmark]: TraceAbstraction took 7103.65ms. Allocated memory was 144.7MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 99.6MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 629.8MB. Max. memory is 16.1GB. [2024-02-07 14:26:34,473 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 144.7MB. Free memory was 116.7MB in the beginning and 116.6MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 452.94ms. Allocated memory is still 144.7MB. Free memory was 115.4MB in the beginning and 90.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.24ms. Allocated memory is still 144.7MB. Free memory was 90.2MB in the beginning and 88.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.44ms. Allocated memory is still 144.7MB. Free memory was 88.1MB in the beginning and 85.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 629.94ms. Allocated memory is still 144.7MB. Free memory was 85.3MB in the beginning and 99.6MB in the end (delta: -14.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7103.65ms. Allocated memory was 144.7MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 99.6MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 629.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 699]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 703]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 714]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 718]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 721]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 725]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 688]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 689]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 691]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 692]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 148 locations, 26 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: 7.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 558 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 505 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 138 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1043 IncrementalHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 138 mSolverCounterUnsat, 22 mSDtfsCounter, 1043 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=6, InterpolantAutomatonStates: 35, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 14:26:34,507 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