./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix030_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix030_power.oepc_pso.oepc_rmo.oepc.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-?-80b1b13-m [2024-01-31 17:37:09,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:37:09,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:37:09,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:37:09,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:37:09,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:37:09,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:37:09,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:37:09,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:37:09,636 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:37:09,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:37:09,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:37:09,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:37:09,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:37:09,638 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:37:09,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:37:09,639 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:37:09,639 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:37:09,639 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:37:09,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:37:09,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:37:09,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:37:09,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:37:09,641 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:37:09,641 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:37:09,641 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:37:09,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:37:09,641 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:37:09,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:37:09,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:37:09,643 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:37:09,643 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:37:09,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:37:09,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:37:09,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:37:09,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:37:09,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:37:09,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:37:09,644 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:37:09,645 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:37:09,645 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:37:09,645 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:37:09,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:37:09,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:37:09,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:37:09,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:37:09,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:37:09,884 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:37:09,885 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:37:09,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:37:10,852 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:37:11,041 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:37:11,042 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:37:11,070 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16d5c261/5bc9f1c45d28401da5207faad01d0396/FLAGe052337b5 [2024-01-31 17:37:11,081 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16d5c261/5bc9f1c45d28401da5207faad01d0396 [2024-01-31 17:37:11,083 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:37:11,086 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:37:11,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix030_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-01-31 17:37:11,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:37:11,605 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:37:11,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:37:11,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:37:11,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:37:11,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:37:11" (1/2) ... [2024-01-31 17:37:11,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3896f9e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:11, skipping insertion in model container [2024-01-31 17:37:11,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:37:11" (1/2) ... [2024-01-31 17:37:11,613 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@232d9767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:37:11, skipping insertion in model container [2024-01-31 17:37:11,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:37:11" (2/2) ... [2024-01-31 17:37:11,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3896f9e5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:11, skipping insertion in model container [2024-01-31 17:37:11,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:37:11" (2/2) ... [2024-01-31 17:37:11,614 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:37:13,625 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:37:13,626 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:37:13,626 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:37:13,655 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:37:13,780 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-31 17:37:13,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:37:13,966 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:37:13,974 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local [2024-01-31 17:37:13,999 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:37:14,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:37:14,058 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:37:14,059 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:14 WrapperNode [2024-01-31 17:37:14,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:37:14,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:37:14,060 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:37:14,060 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:37:14,065 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 31.01 05:37:14" (1/1) ... [2024-01-31 17:37:14,108 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 31.01 05:37:14" (1/1) ... [2024-01-31 17:37:14,138 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2024-01-31 17:37:14,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:37:14,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:37:14,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:37:14,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:37:14,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:14" (1/1) ... [2024-01-31 17:37:14,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:14" (1/1) ... [2024-01-31 17:37:14,160 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:14" (1/1) ... [2024-01-31 17:37:14,186 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 17:37:14,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:14" (1/1) ... [2024-01-31 17:37:14,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:14" (1/1) ... [2024-01-31 17:37:14,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:14" (1/1) ... [2024-01-31 17:37:14,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:14" (1/1) ... [2024-01-31 17:37:14,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:14" (1/1) ... [2024-01-31 17:37:14,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:14" (1/1) ... [2024-01-31 17:37:14,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:37:14,220 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:37:14,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:37:14,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:37:14,221 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:14" (1/1) ... [2024-01-31 17:37:14,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:37:14,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:37:14,245 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) [2024-01-31 17:37:14,264 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 [2024-01-31 17:37:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:37:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:37:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:37:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:37:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:37:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:37:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:37:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:37:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:37:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:37:14,280 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:37:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:37:14,281 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:37:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:37:14,281 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:37:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:37:14,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:37:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:37:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:37:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:37:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:37:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:37:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:37:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:37:14,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:37:14,285 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:37:14,390 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:37:14,391 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:37:14,675 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:37:14,676 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:37:14,831 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:37:14,831 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:37:14,833 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:37:14 BoogieIcfgContainer [2024-01-31 17:37:14,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:37:14,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:37:14,836 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:37:14,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:37:14,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:37:11" (1/4) ... [2024-01-31 17:37:14,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328984c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:37:14, skipping insertion in model container [2024-01-31 17:37:14,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:37:11" (2/4) ... [2024-01-31 17:37:14,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328984c4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:37:14, skipping insertion in model container [2024-01-31 17:37:14,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:37:14" (3/4) ... [2024-01-31 17:37:14,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328984c4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:37:14, skipping insertion in model container [2024-01-31 17:37:14,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:37:14" (4/4) ... [2024-01-31 17:37:14,843 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_power.oepc_pso.oepc_rmo.oepc.i [2024-01-31 17:37:14,857 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:37:14,857 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:37:14,858 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:37:14,902 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:37:14,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 52 transitions, 120 flow [2024-01-31 17:37:14,972 INFO L124 PetriNetUnfolderBase]: 1/48 cut-off events. [2024-01-31 17:37:14,973 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:37:14,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 1/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2024-01-31 17:37:14,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 52 transitions, 120 flow [2024-01-31 17:37:14,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 48 transitions, 108 flow [2024-01-31 17:37:14,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:37:15,002 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;@582f05fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:37:15,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:37:15,007 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:37:15,007 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:37:15,007 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:37:15,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:15,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:37:15,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:15,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:15,013 INFO L85 PathProgramCache]: Analyzing trace with hash 12369243, now seen corresponding path program 1 times [2024-01-31 17:37:15,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:15,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899098674] [2024-01-31 17:37:15,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:15,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:15,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:15,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899098674] [2024-01-31 17:37:15,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899098674] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:15,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:15,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:37:15,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938122117] [2024-01-31 17:37:15,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:15,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:37:15,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:15,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:37:15,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:37:15,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2024-01-31 17:37:15,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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) [2024-01-31 17:37:15,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:15,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2024-01-31 17:37:15,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:16,208 INFO L124 PetriNetUnfolderBase]: 3179/5508 cut-off events. [2024-01-31 17:37:16,209 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:37:16,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10036 conditions, 5508 events. 3179/5508 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 40716 event pairs, 3179 based on Foata normal form. 135/5019 useless extension candidates. Maximal degree in co-relation 10024. Up to 4391 conditions per place. [2024-01-31 17:37:16,244 INFO L140 encePairwiseOnDemand]: 50/52 looper letters, 24 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-01-31 17:37:16,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 46 transitions, 152 flow [2024-01-31 17:37:16,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:37:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:37:16,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 78 transitions. [2024-01-31 17:37:16,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-31 17:37:16,254 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 108 flow. Second operand 2 states and 78 transitions. [2024-01-31 17:37:16,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 46 transitions, 152 flow [2024-01-31 17:37:16,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 46 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:37:16,260 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 100 flow [2024-01-31 17:37:16,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-01-31 17:37:16,263 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-01-31 17:37:16,264 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 100 flow [2024-01-31 17:37:16,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 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) [2024-01-31 17:37:16,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:16,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:37:16,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:37:16,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:16,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:16,265 INFO L85 PathProgramCache]: Analyzing trace with hash 12369244, now seen corresponding path program 1 times [2024-01-31 17:37:16,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:16,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140835160] [2024-01-31 17:37:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:16,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:16,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140835160] [2024-01-31 17:37:16,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140835160] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:16,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:16,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:37:16,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277525782] [2024-01-31 17:37:16,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:16,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:37:16,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:16,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:37:16,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:37:16,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 52 [2024-01-31 17:37:16,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-01-31 17:37:16,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:16,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 52 [2024-01-31 17:37:16,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:16,836 INFO L124 PetriNetUnfolderBase]: 2495/3993 cut-off events. [2024-01-31 17:37:16,837 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:37:16,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7566 conditions, 3993 events. 2495/3993 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 25062 event pairs, 1647 based on Foata normal form. 0/3914 useless extension candidates. Maximal degree in co-relation 7563. Up to 2779 conditions per place. [2024-01-31 17:37:16,855 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 37 selfloop transitions, 2 changer transitions 2/63 dead transitions. [2024-01-31 17:37:16,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 222 flow [2024-01-31 17:37:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:37:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:37:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-01-31 17:37:16,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7692307692307693 [2024-01-31 17:37:16,861 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 100 flow. Second operand 3 states and 120 transitions. [2024-01-31 17:37:16,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 222 flow [2024-01-31 17:37:16,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:37:16,868 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 100 flow [2024-01-31 17:37:16,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-01-31 17:37:16,869 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2024-01-31 17:37:16,869 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 100 flow [2024-01-31 17:37:16,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-01-31 17:37:16,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:16,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:37:16,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:37:16,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:16,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:16,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1316345015, now seen corresponding path program 1 times [2024-01-31 17:37:16,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:16,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781405978] [2024-01-31 17:37:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:16,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:16,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781405978] [2024-01-31 17:37:16,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781405978] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:16,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:16,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:37:16,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354602521] [2024-01-31 17:37:16,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:16,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:37:16,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:16,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:37:16,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:37:16,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 52 [2024-01-31 17:37:16,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-01-31 17:37:16,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:16,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 52 [2024-01-31 17:37:16,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:17,464 INFO L124 PetriNetUnfolderBase]: 3311/5211 cut-off events. [2024-01-31 17:37:17,465 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:37:17,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10204 conditions, 5211 events. 3311/5211 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 34468 event pairs, 2495 based on Foata normal form. 0/4941 useless extension candidates. Maximal degree in co-relation 10200. Up to 3465 conditions per place. [2024-01-31 17:37:17,498 INFO L140 encePairwiseOnDemand]: 50/52 looper letters, 33 selfloop transitions, 1 changer transitions 1/53 dead transitions. [2024-01-31 17:37:17,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 190 flow [2024-01-31 17:37:17,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:37:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:37:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-01-31 17:37:17,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2024-01-31 17:37:17,503 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 102 transitions. [2024-01-31 17:37:17,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 190 flow [2024-01-31 17:37:17,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:37:17,505 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 94 flow [2024-01-31 17:37:17,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-01-31 17:37:17,507 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -5 predicate places. [2024-01-31 17:37:17,507 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 94 flow [2024-01-31 17:37:17,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-01-31 17:37:17,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:17,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:37:17,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:37:17,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:17,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:17,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2142977909, now seen corresponding path program 1 times [2024-01-31 17:37:17,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:17,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797133949] [2024-01-31 17:37:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:17,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:17,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:17,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797133949] [2024-01-31 17:37:17,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797133949] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:17,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:17,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:37:17,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689891988] [2024-01-31 17:37:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:17,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:37:17,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:37:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:37:17,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-01-31 17:37:17,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:37:17,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:17,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-01-31 17:37:17,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:22,129 INFO L124 PetriNetUnfolderBase]: 42176/59742 cut-off events. [2024-01-31 17:37:22,129 INFO L125 PetriNetUnfolderBase]: For 1164/1164 co-relation queries the response was YES. [2024-01-31 17:37:22,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117802 conditions, 59742 events. 42176/59742 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 2357. Compared 423160 event pairs, 12976 based on Foata normal form. 1374/60808 useless extension candidates. Maximal degree in co-relation 117798. Up to 23641 conditions per place. [2024-01-31 17:37:22,485 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 50 selfloop transitions, 9 changer transitions 71/140 dead transitions. [2024-01-31 17:37:22,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 140 transitions, 556 flow [2024-01-31 17:37:22,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:37:22,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:37:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-01-31 17:37:22,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6318681318681318 [2024-01-31 17:37:22,489 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 94 flow. Second operand 7 states and 230 transitions. [2024-01-31 17:37:22,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 140 transitions, 556 flow [2024-01-31 17:37:23,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 140 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:37:23,082 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 203 flow [2024-01-31 17:37:23,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2024-01-31 17:37:23,083 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2024-01-31 17:37:23,083 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 203 flow [2024-01-31 17:37:23,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:37:23,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:23,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:37:23,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:37:23,084 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:23,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:23,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1349870964, now seen corresponding path program 1 times [2024-01-31 17:37:23,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:23,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503426782] [2024-01-31 17:37:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:23,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:23,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:23,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503426782] [2024-01-31 17:37:23,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503426782] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:23,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:23,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:37:23,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827221032] [2024-01-31 17:37:23,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:23,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:37:23,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:23,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:37:23,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:37:23,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-01-31 17:37:23,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-01-31 17:37:23,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:23,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-01-31 17:37:23,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:26,140 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([420] L822-->L838: Formula: (let ((.cse9 (= (mod v_~a$r_buff1_thd4~0_58 256) 0)) (.cse2 (= (mod v_~a$r_buff0_thd4~0_68 256) 0))) (let ((.cse6 (not .cse2)) (.cse12 (= (mod v_~a$w_buff0_used~0_140 256) 0)) (.cse11 (and (= (mod v_~a$w_buff1_used~0_129 256) 0) .cse2)) (.cse5 (and .cse2 .cse9))) (let ((.cse7 (or .cse12 .cse11 .cse5)) (.cse8 (and .cse6 (not .cse12)))) (let ((.cse1 (ite .cse7 v_~a~0_70 (ite .cse8 v_~a$w_buff0~0_55 v_~a$w_buff1~0_48))) (.cse3 (= (mod v_~a$w_buff1_used~0_128 256) 0)) (.cse0 (not (= (mod v_~weak$$choice2~0_30 256) 0))) (.cse4 (= (mod v_~a$w_buff0_used~0_139 256) 0))) (and (= v_~a~0_68 (ite .cse0 v_~a$mem_tmp~0_16 .cse1)) (= v_~a$w_buff0~0_54 v_~a$w_buff0~0_55) (= v_~a$r_buff0_thd4~0_67 (ite .cse0 v_~a$r_buff0_thd4~0_68 (ite (or (and .cse2 .cse3) .cse4 .cse5) v_~a$r_buff0_thd4~0_68 (ite (and .cse6 (not .cse4)) 0 v_~a$r_buff0_thd4~0_68)))) (= v_~a$w_buff0_used~0_139 (ite .cse0 v_~a$w_buff0_used~0_140 (ite .cse7 v_~a$w_buff0_used~0_140 (ite .cse8 0 v_~a$w_buff0_used~0_140)))) (= v_~a$w_buff1~0_48 v_~a$w_buff1~0_47) (= v_~a$flush_delayed~0_19 0) (= .cse1 v_~__unbuffered_p3_EBX~0_8) (= v_~a$r_buff1_thd4~0_57 (ite .cse0 v_~a$r_buff1_thd4~0_58 (ite (let ((.cse10 (= (mod v_~a$r_buff0_thd4~0_67 256) 0))) (or (and .cse9 .cse10) (and .cse3 .cse10) .cse4)) v_~a$r_buff1_thd4~0_58 0))) (= (ite .cse0 v_~a$w_buff1_used~0_129 (ite (or .cse11 .cse4 .cse5) v_~a$w_buff1_used~0_129 0)) v_~a$w_buff1_used~0_128) (= v_~a~0_70 v_~a$mem_tmp~0_16)))))) InVars {~a~0=v_~a~0_70, ~a$w_buff1~0=v_~a$w_buff1~0_48, ~a$w_buff0~0=v_~a$w_buff0~0_55, ~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_58, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_140, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_129, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_68} OutVars{~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_57, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_139, ~__unbuffered_p3_EBX~0=v_~__unbuffered_p3_EBX~0_8, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_67, P3Thread1of1ForFork2_#t~nondet4=|v_P3Thread1of1ForFork2_#t~nondet4_1|, ~a~0=v_~a~0_68, ~a$mem_tmp~0=v_~a$mem_tmp~0_16, ~weak$$choice0~0=v_~weak$$choice0~0_13, ~a$w_buff1~0=v_~a$w_buff1~0_47, ~a$flush_delayed~0=v_~a$flush_delayed~0_19, ~a$w_buff0~0=v_~a$w_buff0~0_54, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_128, ~weak$$choice2~0=v_~weak$$choice2~0_30, P3Thread1of1ForFork2_#t~nondet3=|v_P3Thread1of1ForFork2_#t~nondet3_1|} AuxVars[] AssignedVars[~a$r_buff1_thd4~0, ~a$w_buff0_used~0, ~__unbuffered_p3_EBX~0, ~a$r_buff0_thd4~0, P3Thread1of1ForFork2_#t~nondet4, ~a~0, ~a$mem_tmp~0, ~weak$$choice0~0, ~a$w_buff1~0, ~a$flush_delayed~0, ~a$w_buff0~0, ~a$w_buff1_used~0, ~weak$$choice2~0, P3Thread1of1ForFork2_#t~nondet3][101], [75#true, P3Thread1of1ForFork2InUse, 9#L762true, 26#L779true, 102#(and (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), 56#P2EXITtrue, 52#L18-1true, 10#L838true, Black: 83#(and (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), 67#true, Black: 85#(and (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), Black: 78#(and (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 77#(or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), P1Thread1of1ForFork3InUse, Black: 81#(and (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0)), P2Thread1of1ForFork0InUse, P0Thread1of1ForFork1InUse]) [2024-01-31 17:37:26,141 INFO L294 olderBase$Statistics]: this new event has 29 ancestors and is cut-off event [2024-01-31 17:37:26,141 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2024-01-31 17:37:26,141 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2024-01-31 17:37:26,141 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2024-01-31 17:37:26,419 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([420] L822-->L838: Formula: (let ((.cse9 (= (mod v_~a$r_buff1_thd4~0_58 256) 0)) (.cse2 (= (mod v_~a$r_buff0_thd4~0_68 256) 0))) (let ((.cse6 (not .cse2)) (.cse12 (= (mod v_~a$w_buff0_used~0_140 256) 0)) (.cse11 (and (= (mod v_~a$w_buff1_used~0_129 256) 0) .cse2)) (.cse5 (and .cse2 .cse9))) (let ((.cse7 (or .cse12 .cse11 .cse5)) (.cse8 (and .cse6 (not .cse12)))) (let ((.cse1 (ite .cse7 v_~a~0_70 (ite .cse8 v_~a$w_buff0~0_55 v_~a$w_buff1~0_48))) (.cse3 (= (mod v_~a$w_buff1_used~0_128 256) 0)) (.cse0 (not (= (mod v_~weak$$choice2~0_30 256) 0))) (.cse4 (= (mod v_~a$w_buff0_used~0_139 256) 0))) (and (= v_~a~0_68 (ite .cse0 v_~a$mem_tmp~0_16 .cse1)) (= v_~a$w_buff0~0_54 v_~a$w_buff0~0_55) (= v_~a$r_buff0_thd4~0_67 (ite .cse0 v_~a$r_buff0_thd4~0_68 (ite (or (and .cse2 .cse3) .cse4 .cse5) v_~a$r_buff0_thd4~0_68 (ite (and .cse6 (not .cse4)) 0 v_~a$r_buff0_thd4~0_68)))) (= v_~a$w_buff0_used~0_139 (ite .cse0 v_~a$w_buff0_used~0_140 (ite .cse7 v_~a$w_buff0_used~0_140 (ite .cse8 0 v_~a$w_buff0_used~0_140)))) (= v_~a$w_buff1~0_48 v_~a$w_buff1~0_47) (= v_~a$flush_delayed~0_19 0) (= .cse1 v_~__unbuffered_p3_EBX~0_8) (= v_~a$r_buff1_thd4~0_57 (ite .cse0 v_~a$r_buff1_thd4~0_58 (ite (let ((.cse10 (= (mod v_~a$r_buff0_thd4~0_67 256) 0))) (or (and .cse9 .cse10) (and .cse3 .cse10) .cse4)) v_~a$r_buff1_thd4~0_58 0))) (= (ite .cse0 v_~a$w_buff1_used~0_129 (ite (or .cse11 .cse4 .cse5) v_~a$w_buff1_used~0_129 0)) v_~a$w_buff1_used~0_128) (= v_~a~0_70 v_~a$mem_tmp~0_16)))))) InVars {~a~0=v_~a~0_70, ~a$w_buff1~0=v_~a$w_buff1~0_48, ~a$w_buff0~0=v_~a$w_buff0~0_55, ~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_58, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_140, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_129, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_68} OutVars{~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_57, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_139, ~__unbuffered_p3_EBX~0=v_~__unbuffered_p3_EBX~0_8, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_67, P3Thread1of1ForFork2_#t~nondet4=|v_P3Thread1of1ForFork2_#t~nondet4_1|, ~a~0=v_~a~0_68, ~a$mem_tmp~0=v_~a$mem_tmp~0_16, ~weak$$choice0~0=v_~weak$$choice0~0_13, ~a$w_buff1~0=v_~a$w_buff1~0_47, ~a$flush_delayed~0=v_~a$flush_delayed~0_19, ~a$w_buff0~0=v_~a$w_buff0~0_54, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_128, ~weak$$choice2~0=v_~weak$$choice2~0_30, P3Thread1of1ForFork2_#t~nondet3=|v_P3Thread1of1ForFork2_#t~nondet3_1|} AuxVars[] AssignedVars[~a$r_buff1_thd4~0, ~a$w_buff0_used~0, ~__unbuffered_p3_EBX~0, ~a$r_buff0_thd4~0, P3Thread1of1ForFork2_#t~nondet4, ~a~0, ~a$mem_tmp~0, ~weak$$choice0~0, ~a$w_buff1~0, ~a$flush_delayed~0, ~a$w_buff0~0, ~a$w_buff1_used~0, ~weak$$choice2~0, P3Thread1of1ForFork2_#t~nondet3][108], [75#true, P3Thread1of1ForFork2InUse, 9#L762true, 102#(and (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), 56#P2EXITtrue, 52#L18-1true, 10#L838true, 40#L782true, Black: 83#(and (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), 67#true, Black: 85#(and (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), Black: 78#(and (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 77#(or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), Black: 81#(and (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0)), P1Thread1of1ForFork3InUse, P2Thread1of1ForFork0InUse, P0Thread1of1ForFork1InUse]) [2024-01-31 17:37:26,419 INFO L294 olderBase$Statistics]: this new event has 30 ancestors and is cut-off event [2024-01-31 17:37:26,420 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2024-01-31 17:37:26,420 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2024-01-31 17:37:26,420 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2024-01-31 17:37:27,239 INFO L124 PetriNetUnfolderBase]: 31059/47513 cut-off events. [2024-01-31 17:37:27,240 INFO L125 PetriNetUnfolderBase]: For 42520/44928 co-relation queries the response was YES. [2024-01-31 17:37:27,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126682 conditions, 47513 events. 31059/47513 cut-off events. For 42520/44928 co-relation queries the response was YES. Maximal size of possible extension queue 2292. Compared 383556 event pairs, 9001 based on Foata normal form. 1613/47900 useless extension candidates. Maximal degree in co-relation 126673. Up to 30756 conditions per place. [2024-01-31 17:37:27,808 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 39 selfloop transitions, 5 changer transitions 51/115 dead transitions. [2024-01-31 17:37:27,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 115 transitions, 655 flow [2024-01-31 17:37:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:37:27,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:37:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-01-31 17:37:27,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5906593406593407 [2024-01-31 17:37:27,810 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 203 flow. Second operand 7 states and 215 transitions. [2024-01-31 17:37:27,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 115 transitions, 655 flow [2024-01-31 17:37:27,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 115 transitions, 613 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:37:27,856 INFO L231 Difference]: Finished difference. Result has 70 places, 54 transitions, 258 flow [2024-01-31 17:37:27,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=258, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2024-01-31 17:37:27,858 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2024-01-31 17:37:27,858 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 258 flow [2024-01-31 17:37:27,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-01-31 17:37:27,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:27,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:37:27,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:37:27,859 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:27,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:27,859 INFO L85 PathProgramCache]: Analyzing trace with hash -541436940, now seen corresponding path program 1 times [2024-01-31 17:37:27,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:27,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031922110] [2024-01-31 17:37:27,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:27,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:28,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:28,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031922110] [2024-01-31 17:37:28,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031922110] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:28,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:28,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:37:28,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902886515] [2024-01-31 17:37:28,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:28,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:37:28,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:37:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:37:28,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-01-31 17:37:28,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-01-31 17:37:28,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:28,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-01-31 17:37:28,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:32,605 INFO L124 PetriNetUnfolderBase]: 37435/53445 cut-off events. [2024-01-31 17:37:32,605 INFO L125 PetriNetUnfolderBase]: For 103450/103473 co-relation queries the response was YES. [2024-01-31 17:37:32,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164098 conditions, 53445 events. 37435/53445 cut-off events. For 103450/103473 co-relation queries the response was YES. Maximal size of possible extension queue 2142. Compared 375666 event pairs, 4784 based on Foata normal form. 1144/54543 useless extension candidates. Maximal degree in co-relation 164084. Up to 20900 conditions per place. [2024-01-31 17:37:32,973 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 72 selfloop transitions, 15 changer transitions 100/197 dead transitions. [2024-01-31 17:37:32,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 197 transitions, 1251 flow [2024-01-31 17:37:32,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:37:32,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:37:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 309 transitions. [2024-01-31 17:37:32,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942307692307692 [2024-01-31 17:37:32,974 INFO L175 Difference]: Start difference. First operand has 70 places, 54 transitions, 258 flow. Second operand 10 states and 309 transitions. [2024-01-31 17:37:32,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 197 transitions, 1251 flow [2024-01-31 17:37:33,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 197 transitions, 1230 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-31 17:37:33,512 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 407 flow [2024-01-31 17:37:33,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=407, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2024-01-31 17:37:33,512 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 21 predicate places. [2024-01-31 17:37:33,513 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 407 flow [2024-01-31 17:37:33,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-01-31 17:37:33,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:33,513 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] [2024-01-31 17:37:33,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:37:33,513 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:33,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:33,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1399102835, now seen corresponding path program 1 times [2024-01-31 17:37:33,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:33,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886240898] [2024-01-31 17:37:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:33,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:33,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886240898] [2024-01-31 17:37:33,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886240898] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:33,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:33,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:37:33,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888699718] [2024-01-31 17:37:33,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:33,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:37:33,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:33,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:37:33,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:37:33,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-01-31 17:37:33,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 407 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-01-31 17:37:33,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:33,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-01-31 17:37:33,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:37,847 INFO L124 PetriNetUnfolderBase]: 26982/41336 cut-off events. [2024-01-31 17:37:37,847 INFO L125 PetriNetUnfolderBase]: For 131228/133066 co-relation queries the response was YES. [2024-01-31 17:37:38,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134364 conditions, 41336 events. 26982/41336 cut-off events. For 131228/133066 co-relation queries the response was YES. Maximal size of possible extension queue 1963. Compared 328797 event pairs, 12317 based on Foata normal form. 1808/42012 useless extension candidates. Maximal degree in co-relation 134344. Up to 28142 conditions per place. [2024-01-31 17:37:38,230 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 48 selfloop transitions, 7 changer transitions 55/140 dead transitions. [2024-01-31 17:37:38,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 140 transitions, 1013 flow [2024-01-31 17:37:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:37:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:37:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-01-31 17:37:38,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6098901098901099 [2024-01-31 17:37:38,232 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 407 flow. Second operand 7 states and 222 transitions. [2024-01-31 17:37:38,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 140 transitions, 1013 flow [2024-01-31 17:37:38,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 140 transitions, 997 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-01-31 17:37:38,936 INFO L231 Difference]: Finished difference. Result has 86 places, 69 transitions, 510 flow [2024-01-31 17:37:38,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=510, PETRI_PLACES=86, PETRI_TRANSITIONS=69} [2024-01-31 17:37:38,937 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 26 predicate places. [2024-01-31 17:37:38,937 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 69 transitions, 510 flow [2024-01-31 17:37:38,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-01-31 17:37:38,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:38,937 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] [2024-01-31 17:37:38,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:37:38,938 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:38,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash -287338754, now seen corresponding path program 1 times [2024-01-31 17:37:38,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:38,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998247391] [2024-01-31 17:37:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:38,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:39,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:39,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998247391] [2024-01-31 17:37:39,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998247391] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:39,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:39,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:37:39,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935845539] [2024-01-31 17:37:39,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:39,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:37:39,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:39,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:37:39,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:37:39,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2024-01-31 17:37:39,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 69 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2024-01-31 17:37:39,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:39,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2024-01-31 17:37:39,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:43,084 INFO L124 PetriNetUnfolderBase]: 23478/36322 cut-off events. [2024-01-31 17:37:43,084 INFO L125 PetriNetUnfolderBase]: For 125839/128494 co-relation queries the response was YES. [2024-01-31 17:37:43,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118334 conditions, 36322 events. 23478/36322 cut-off events. For 125839/128494 co-relation queries the response was YES. Maximal size of possible extension queue 1744. Compared 287891 event pairs, 5429 based on Foata normal form. 1482/36904 useless extension candidates. Maximal degree in co-relation 118308. Up to 21271 conditions per place. [2024-01-31 17:37:43,410 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 36 selfloop transitions, 4 changer transitions 43/122 dead transitions. [2024-01-31 17:37:43,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 122 transitions, 862 flow [2024-01-31 17:37:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:37:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:37:43,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-01-31 17:37:43,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-01-31 17:37:43,412 INFO L175 Difference]: Start difference. First operand has 86 places, 69 transitions, 510 flow. Second operand 7 states and 217 transitions. [2024-01-31 17:37:43,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 122 transitions, 862 flow [2024-01-31 17:37:43,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 122 transitions, 815 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-01-31 17:37:43,536 INFO L231 Difference]: Finished difference. Result has 86 places, 69 transitions, 489 flow [2024-01-31 17:37:43,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=86, PETRI_TRANSITIONS=69} [2024-01-31 17:37:43,536 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 26 predicate places. [2024-01-31 17:37:43,536 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 69 transitions, 489 flow [2024-01-31 17:37:43,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2024-01-31 17:37:43,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:43,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:37:43,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:37:43,537 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:43,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:43,538 INFO L85 PathProgramCache]: Analyzing trace with hash -392076523, now seen corresponding path program 1 times [2024-01-31 17:37:43,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:43,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586813357] [2024-01-31 17:37:43,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:43,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:43,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:43,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586813357] [2024-01-31 17:37:43,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586813357] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:43,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:43,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:37:43,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203454533] [2024-01-31 17:37:43,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:43,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:37:43,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:43,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:37:43,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:37:43,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-01-31 17:37:43,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 69 transitions, 489 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-01-31 17:37:43,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:43,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-01-31 17:37:43,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:37:49,130 INFO L124 PetriNetUnfolderBase]: 32721/49827 cut-off events. [2024-01-31 17:37:49,130 INFO L125 PetriNetUnfolderBase]: For 192759/197536 co-relation queries the response was YES. [2024-01-31 17:37:49,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162273 conditions, 49827 events. 32721/49827 cut-off events. For 192759/197536 co-relation queries the response was YES. Maximal size of possible extension queue 2202. Compared 403891 event pairs, 12283 based on Foata normal form. 1613/49970 useless extension candidates. Maximal degree in co-relation 162248. Up to 20484 conditions per place. [2024-01-31 17:37:49,595 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 50 selfloop transitions, 6 changer transitions 51/141 dead transitions. [2024-01-31 17:37:49,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 141 transitions, 1014 flow [2024-01-31 17:37:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:37:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:37:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-01-31 17:37:49,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6263736263736264 [2024-01-31 17:37:49,597 INFO L175 Difference]: Start difference. First operand has 86 places, 69 transitions, 489 flow. Second operand 7 states and 228 transitions. [2024-01-31 17:37:49,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 141 transitions, 1014 flow [2024-01-31 17:37:49,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 141 transitions, 968 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-01-31 17:37:49,919 INFO L231 Difference]: Finished difference. Result has 87 places, 69 transitions, 491 flow [2024-01-31 17:37:49,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=491, PETRI_PLACES=87, PETRI_TRANSITIONS=69} [2024-01-31 17:37:49,919 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 27 predicate places. [2024-01-31 17:37:49,920 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 69 transitions, 491 flow [2024-01-31 17:37:49,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-01-31 17:37:49,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:37:49,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:37:49,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:37:49,920 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:37:49,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:37:49,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1178315677, now seen corresponding path program 1 times [2024-01-31 17:37:49,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:37:49,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23901930] [2024-01-31 17:37:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:37:49,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:37:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:37:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:37:50,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:37:50,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23901930] [2024-01-31 17:37:50,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23901930] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:37:50,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:37:50,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:37:50,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467764001] [2024-01-31 17:37:50,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:37:50,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:37:50,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:37:50,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:37:50,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:37:50,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:37:50,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 69 transitions, 491 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-01-31 17:37:50,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:37:50,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:37:50,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand