./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 44c38e66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-44c38e6-m [2025-04-24 18:40:05,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 18:40:05,206 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 18:40:05,212 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 18:40:05,213 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 18:40:05,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 18:40:05,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 18:40:05,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 18:40:05,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 18:40:05,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 18:40:05,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 18:40:05,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 18:40:05,234 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 18:40:05,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 18:40:05,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 18:40:05,234 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 18:40:05,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 18:40:05,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 18:40:05,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 18:40:05,234 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 18:40:05,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 18:40:05,234 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 18:40:05,234 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 18:40:05,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 18:40:05,236 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 18:40:05,236 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 18:40:05,236 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 18:40:05,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 18:40:05,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 18:40:05,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 18:40:05,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:40:05,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 18:40:05,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 18:40:05,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 18:40:05,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 18:40:05,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:40:05,237 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 18:40:05,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 18:40:05,237 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 18:40:05,237 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 18:40:05,237 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 18:40:05,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 18:40:05,237 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 18:40:05,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 18:40:05,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 18:40:05,237 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 18:40:05,237 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 18:40:05,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2025-04-24 18:40:05,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 18:40:05,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 18:40:05,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 18:40:05,471 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 18:40:05,471 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 18:40:05,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2025-04-24 18:40:06,760 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/4e69fda55/826c1210912848a5ae96a0d239ecfc4b/FLAG27cda0943 [2025-04-24 18:40:06,998 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 18:40:06,998 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2025-04-24 18:40:07,007 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/4e69fda55/826c1210912848a5ae96a0d239ecfc4b/FLAG27cda0943 [2025-04-24 18:40:07,810 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/4e69fda55/826c1210912848a5ae96a0d239ecfc4b [2025-04-24 18:40:07,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 18:40:07,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 18:40:07,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 18:40:07,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 18:40:07,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 18:40:07,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 06:40:07" (1/1) ... [2025-04-24 18:40:07,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e35cc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:07, skipping insertion in model container [2025-04-24 18:40:07,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 06:40:07" (1/1) ... [2025-04-24 18:40:07,832 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 18:40:08,069 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30869,30882] [2025-04-24 18:40:08,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 18:40:08,083 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 18:40:08,134 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i[30869,30882] [2025-04-24 18:40:08,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 18:40:08,156 INFO L204 MainTranslator]: Completed translation [2025-04-24 18:40:08,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08 WrapperNode [2025-04-24 18:40:08,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 18:40:08,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 18:40:08,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 18:40:08,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 18:40:08,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08" (1/1) ... [2025-04-24 18:40:08,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08" (1/1) ... [2025-04-24 18:40:08,184 INFO L138 Inliner]: procedures = 172, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 158 [2025-04-24 18:40:08,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 18:40:08,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 18:40:08,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 18:40:08,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 18:40:08,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08" (1/1) ... [2025-04-24 18:40:08,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08" (1/1) ... [2025-04-24 18:40:08,192 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08" (1/1) ... [2025-04-24 18:40:08,193 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08" (1/1) ... [2025-04-24 18:40:08,201 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08" (1/1) ... [2025-04-24 18:40:08,202 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08" (1/1) ... [2025-04-24 18:40:08,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08" (1/1) ... [2025-04-24 18:40:08,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08" (1/1) ... [2025-04-24 18:40:08,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08" (1/1) ... [2025-04-24 18:40:08,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 18:40:08,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 18:40:08,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 18:40:08,218 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 18:40:08,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08" (1/1) ... [2025-04-24 18:40:08,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:40:08,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:40:08,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-24 18:40:08,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-24 18:40:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-24 18:40:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-04-24 18:40:08,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-04-24 18:40:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-24 18:40:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-24 18:40:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 18:40:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-24 18:40:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-24 18:40:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 18:40:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-24 18:40:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 18:40:08,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 18:40:08,258 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-24 18:40:08,347 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 18:40:08,349 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 18:40:08,515 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 18:40:08,515 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 18:40:08,777 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 18:40:08,778 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2025-04-24 18:40:08,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 06:40:08 BoogieIcfgContainer [2025-04-24 18:40:08,779 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 18:40:08,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 18:40:08,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 18:40:08,784 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 18:40:08,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 06:40:07" (1/3) ... [2025-04-24 18:40:08,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f4dc9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 06:40:08, skipping insertion in model container [2025-04-24 18:40:08,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:40:08" (2/3) ... [2025-04-24 18:40:08,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f4dc9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 06:40:08, skipping insertion in model container [2025-04-24 18:40:08,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 06:40:08" (3/3) ... [2025-04-24 18:40:08,786 INFO L128 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2025-04-24 18:40:08,795 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 18:40:08,797 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 36_stack_cas_p0_vs_concur.i that has 2 procedures, 18 locations, 20 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-24 18:40:08,797 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 18:40:08,829 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-24 18:40:08,859 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:40:08,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 18:40:08,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:40:08,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-24 18:40:08,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-24 18:40:08,931 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 18:40:08,944 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2025-04-24 18:40:08,949 INFO L340 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@77e8d151, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:40:08,950 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 18:40:09,216 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:40:09,216 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:09,216 INFO L139 ounterexampleChecker]: Examining path program with hash -1299820699, occurence #1 [2025-04-24 18:40:09,216 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:09,217 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:09,219 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:09,220 INFO L85 PathProgramCache]: Analyzing trace with hash 22912437, now seen corresponding path program 1 times [2025-04-24 18:40:09,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:09,225 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376355640] [2025-04-24 18:40:09,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:09,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:09,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-24 18:40:09,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-24 18:40:09,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:09,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:09,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:09,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:40:09,680 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376355640] [2025-04-24 18:40:09,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376355640] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:40:09,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:40:09,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-24 18:40:09,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670642764] [2025-04-24 18:40:09,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:40:09,687 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-24 18:40:09,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:40:09,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-24 18:40:09,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-24 18:40:09,701 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:09,702 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:40:09,703 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2025-04-24 18:40:09,703 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:09,763 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:09,764 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 18:40:09,764 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:40:09,764 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:09,764 INFO L139 ounterexampleChecker]: Examining path program with hash -859370425, occurence #1 [2025-04-24 18:40:09,764 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:09,764 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:09,764 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:09,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1610971672, now seen corresponding path program 1 times [2025-04-24 18:40:09,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:09,765 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909834185] [2025-04-24 18:40:09,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:09,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:10,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-24 18:40:10,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-24 18:40:10,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:10,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:10,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:40:10,578 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909834185] [2025-04-24 18:40:10,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909834185] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:40:10,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:40:10,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-24 18:40:10,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167187245] [2025-04-24 18:40:10,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:40:10,579 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-24 18:40:10,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:40:10,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-24 18:40:10,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-04-24 18:40:10,580 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:10,580 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:40:10,580 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2025-04-24 18:40:10,580 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:10,580 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:10,771 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:10,771 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:10,772 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-24 18:40:10,772 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:40:10,772 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:10,772 INFO L139 ounterexampleChecker]: Examining path program with hash 1364057901, occurence #1 [2025-04-24 18:40:10,772 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:10,772 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:10,772 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:10,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2121190591, now seen corresponding path program 1 times [2025-04-24 18:40:10,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:10,773 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996716504] [2025-04-24 18:40:10,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:10,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:10,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-24 18:40:10,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-24 18:40:10,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:10,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:11,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:40:11,295 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996716504] [2025-04-24 18:40:11,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996716504] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 18:40:11,295 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719250058] [2025-04-24 18:40:11,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:11,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:40:11,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:40:11,298 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 18:40:11,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-24 18:40:11,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-24 18:40:11,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-24 18:40:11,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:11,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:11,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-04-24 18:40:11,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 18:40:11,661 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-04-24 18:40:11,786 INFO L325 Elim1Store]: treesize reduction 58, result has 31.8 percent of original size [2025-04-24 18:40:11,787 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 37 [2025-04-24 18:40:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:11,845 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-24 18:40:12,027 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-24 18:40:12,028 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2025-04-24 18:40:12,041 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-24 18:40:12,041 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2025-04-24 18:40:12,072 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 58 [2025-04-24 18:40:12,075 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2025-04-24 18:40:12,085 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2025-04-24 18:40:12,146 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-24 18:40:12,147 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 49 [2025-04-24 18:40:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:12,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719250058] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-24 18:40:12,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-24 18:40:12,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 19 [2025-04-24 18:40:12,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360205431] [2025-04-24 18:40:12,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-24 18:40:12,195 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-24 18:40:12,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:40:12,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-24 18:40:12,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=340, Unknown=2, NotChecked=0, Total=420 [2025-04-24 18:40:12,196 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:12,197 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:40:12,197 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 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) [2025-04-24 18:40:12,198 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:12,198 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:12,198 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:13,312 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:13,313 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-24 18:40:13,313 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-24 18:40:13,315 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-04-24 18:40:13,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-24 18:40:13,519 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-04-24 18:40:13,523 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-24 18:40:13,523 INFO L320 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (1/2) [2025-04-24 18:40:13,525 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:40:13,526 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 18:40:13,526 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-24 18:40:13,527 INFO L340 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@77e8d151, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:40:13,527 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 18:40:13,530 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 18:40:13,530 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:13,531 INFO L139 ounterexampleChecker]: Examining path program with hash -1997747635, occurence #1 [2025-04-24 18:40:13,531 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:13,531 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:13,531 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:13,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1359692057, now seen corresponding path program 1 times [2025-04-24 18:40:13,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:13,531 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361385316] [2025-04-24 18:40:13,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:13,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:13,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-24 18:40:13,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-24 18:40:13,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:13,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 18:40:13,747 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-24 18:40:13,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-24 18:40:13,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-24 18:40:13,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:13,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 18:40:13,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-24 18:40:13,776 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-24 18:40:13,776 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2025-04-24 18:40:13,777 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-24 18:40:13,777 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-24 18:40:13,777 INFO L320 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/2) [2025-04-24 18:40:13,778 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-24 18:40:13,778 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-24 18:40:13,792 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-24 18:40:13,794 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:40:13,802 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 18:40:13,803 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-24 18:40:13,803 INFO L340 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@77e8d151, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:40:13,803 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 18:40:14,476 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 18:40:14,476 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:14,476 INFO L139 ounterexampleChecker]: Examining path program with hash -1841002933, occurence #1 [2025-04-24 18:40:14,476 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:14,476 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:14,476 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:14,477 INFO L85 PathProgramCache]: Analyzing trace with hash -972392972, now seen corresponding path program 1 times [2025-04-24 18:40:14,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:14,477 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495726319] [2025-04-24 18:40:14,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:14,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:14,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-24 18:40:14,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-24 18:40:14,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:14,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:14,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:40:14,892 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495726319] [2025-04-24 18:40:14,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495726319] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:40:14,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:40:14,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-24 18:40:14,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600660071] [2025-04-24 18:40:14,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:40:14,893 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-24 18:40:14,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:40:14,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-24 18:40:14,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-04-24 18:40:14,894 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:14,894 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:40:14,894 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 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) [2025-04-24 18:40:14,894 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:15,196 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:15,196 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-24 18:40:15,196 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-24 18:40:15,197 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:15,197 INFO L139 ounterexampleChecker]: Examining path program with hash 2137880928, occurence #1 [2025-04-24 18:40:15,197 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:15,197 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:15,197 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:15,197 INFO L85 PathProgramCache]: Analyzing trace with hash -943763821, now seen corresponding path program 1 times [2025-04-24 18:40:15,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:15,197 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650509454] [2025-04-24 18:40:15,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:15,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:15,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-24 18:40:15,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-24 18:40:15,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:15,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 18:40:15,366 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-24 18:40:15,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-04-24 18:40:15,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-04-24 18:40:15,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:15,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 18:40:15,405 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-24 18:40:15,406 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-24 18:40:15,406 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2025-04-24 18:40:15,406 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-24 18:40:15,407 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-24 18:40:15,408 INFO L320 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/3) [2025-04-24 18:40:15,408 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-24 18:40:15,408 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-24 18:40:15,431 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-24 18:40:15,435 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:40:15,450 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 18:40:15,451 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork0 ======== [2025-04-24 18:40:15,451 INFO L340 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@77e8d151, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:40:15,451 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 18:40:16,825 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:40:16,826 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:16,826 INFO L139 ounterexampleChecker]: Examining path program with hash 1484347805, occurence #1 [2025-04-24 18:40:16,826 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:16,826 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:16,826 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:16,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1352105695, now seen corresponding path program 1 times [2025-04-24 18:40:16,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:16,826 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85981854] [2025-04-24 18:40:16,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:16,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:17,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-04-24 18:40:17,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-04-24 18:40:17,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:17,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:17,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:40:17,031 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85981854] [2025-04-24 18:40:17,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85981854] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:40:17,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:40:17,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-24 18:40:17,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848198697] [2025-04-24 18:40:17,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:40:17,032 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-24 18:40:17,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:40:17,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-24 18:40:17,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-24 18:40:17,033 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:17,033 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:40:17,033 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) [2025-04-24 18:40:17,033 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:17,084 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:17,084 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-24 18:40:17,084 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:40:17,084 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:17,084 INFO L139 ounterexampleChecker]: Examining path program with hash -2019365011, occurence #1 [2025-04-24 18:40:17,084 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:17,084 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:17,085 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash 610992410, now seen corresponding path program 1 times [2025-04-24 18:40:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:17,085 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623799128] [2025-04-24 18:40:17,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:17,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:17,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-04-24 18:40:17,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-04-24 18:40:17,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:17,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:17,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:40:17,510 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623799128] [2025-04-24 18:40:17,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623799128] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:40:17,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:40:17,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-24 18:40:17,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758690090] [2025-04-24 18:40:17,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:40:17,511 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-24 18:40:17,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:40:17,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-24 18:40:17,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-04-24 18:40:17,511 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:17,511 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:40:17,512 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-04-24 18:40:17,512 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:17,512 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:17,932 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:17,932 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:40:17,932 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-24 18:40:17,932 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:40:17,932 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:17,932 INFO L139 ounterexampleChecker]: Examining path program with hash 1766585879, occurence #1 [2025-04-24 18:40:17,932 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:17,932 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:17,933 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:17,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1757196106, now seen corresponding path program 1 times [2025-04-24 18:40:17,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:17,933 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808783539] [2025-04-24 18:40:17,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:17,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:18,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-04-24 18:40:18,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-04-24 18:40:18,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:18,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:18,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:18,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:40:18,401 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808783539] [2025-04-24 18:40:18,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808783539] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:40:18,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:40:18,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-24 18:40:18,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349132746] [2025-04-24 18:40:18,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:40:18,401 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-24 18:40:18,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:40:18,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-24 18:40:18,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-04-24 18:40:18,402 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:18,402 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:40:18,402 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 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) [2025-04-24 18:40:18,402 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:18,402 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:40:18,402 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:19,163 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:19,163 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:40:19,163 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:19,163 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-24 18:40:19,164 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:40:19,164 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:19,164 INFO L139 ounterexampleChecker]: Examining path program with hash 338859388, occurence #1 [2025-04-24 18:40:19,164 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:19,164 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:19,164 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:19,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1824910055, now seen corresponding path program 1 times [2025-04-24 18:40:19,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:19,164 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250374910] [2025-04-24 18:40:19,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:19,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:19,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-04-24 18:40:19,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-04-24 18:40:19,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:19,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:20,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:40:20,604 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250374910] [2025-04-24 18:40:20,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250374910] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:40:20,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:40:20,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2025-04-24 18:40:20,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928452189] [2025-04-24 18:40:20,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:40:20,605 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-24 18:40:20,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:40:20,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-24 18:40:20,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2025-04-24 18:40:20,605 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:20,605 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:40:20,606 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 22 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) [2025-04-24 18:40:20,606 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:20,606 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:40:20,606 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:20,606 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:21,519 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:21,520 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:40:21,520 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:21,520 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-24 18:40:21,520 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-24 18:40:21,520 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:40:21,520 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:21,520 INFO L139 ounterexampleChecker]: Examining path program with hash 449219755, occurence #1 [2025-04-24 18:40:21,520 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:21,521 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:21,521 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:21,521 INFO L85 PathProgramCache]: Analyzing trace with hash -353530992, now seen corresponding path program 1 times [2025-04-24 18:40:21,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:21,521 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233777417] [2025-04-24 18:40:21,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:21,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:21,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-04-24 18:40:21,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-04-24 18:40:21,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:21,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-04-24 18:40:22,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:40:22,143 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233777417] [2025-04-24 18:40:22,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233777417] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:40:22,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:40:22,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-04-24 18:40:22,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277360001] [2025-04-24 18:40:22,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:40:22,143 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-24 18:40:22,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:40:22,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-24 18:40:22,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2025-04-24 18:40:22,144 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:22,144 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:40:22,144 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 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) [2025-04-24 18:40:22,144 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:22,144 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:40:22,144 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:22,144 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2025-04-24 18:40:22,144 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:22,759 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:22,759 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:40:22,759 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:22,759 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-24 18:40:22,759 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-24 18:40:22,759 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-24 18:40:22,759 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:40:22,759 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:22,759 INFO L139 ounterexampleChecker]: Examining path program with hash -243474667, occurence #1 [2025-04-24 18:40:22,760 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:22,760 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:22,760 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:22,760 INFO L85 PathProgramCache]: Analyzing trace with hash -586542657, now seen corresponding path program 1 times [2025-04-24 18:40:22,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:22,760 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511431395] [2025-04-24 18:40:22,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:22,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:22,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-04-24 18:40:22,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-04-24 18:40:22,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:22,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:23,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:40:23,781 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511431395] [2025-04-24 18:40:23,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511431395] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:40:23,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:40:23,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-04-24 18:40:23,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189726418] [2025-04-24 18:40:23,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:40:23,782 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-24 18:40:23,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:40:23,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-24 18:40:23,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2025-04-24 18:40:23,782 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:23,782 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:40:23,782 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 18 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 18:40:23,783 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:23,783 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:40:23,783 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:23,783 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2025-04-24 18:40:23,783 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2025-04-24 18:40:23,783 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:24,943 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:24,943 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:40:24,944 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:24,944 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-24 18:40:24,944 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-24 18:40:24,944 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-24 18:40:24,944 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-24 18:40:24,944 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:40:24,944 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:24,944 INFO L139 ounterexampleChecker]: Examining path program with hash -1367897064, occurence #1 [2025-04-24 18:40:24,944 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:24,944 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:24,944 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:24,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1911473280, now seen corresponding path program 1 times [2025-04-24 18:40:24,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:24,945 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389155013] [2025-04-24 18:40:24,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:24,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:25,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-04-24 18:40:25,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-04-24 18:40:25,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:25,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:26,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:40:26,226 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389155013] [2025-04-24 18:40:26,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389155013] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:40:26,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:40:26,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2025-04-24 18:40:26,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381570357] [2025-04-24 18:40:26,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:40:26,227 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-24 18:40:26,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:40:26,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-24 18:40:26,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2025-04-24 18:40:26,227 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:26,227 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:40:26,227 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-24 18:40:26,228 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:26,228 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:40:26,228 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:26,228 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2025-04-24 18:40:26,228 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2025-04-24 18:40:26,228 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-04-24 18:40:26,228 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:27,654 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:27,654 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:40:27,654 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:27,654 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-24 18:40:27,654 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-24 18:40:27,654 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-24 18:40:27,654 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-04-24 18:40:27,654 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-24 18:40:27,654 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:40:27,654 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:27,655 INFO L139 ounterexampleChecker]: Examining path program with hash 887465081, occurence #1 [2025-04-24 18:40:27,655 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:27,655 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:27,655 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash 891060908, now seen corresponding path program 1 times [2025-04-24 18:40:27,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:27,655 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250231121] [2025-04-24 18:40:27,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:27,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:27,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-04-24 18:40:27,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-04-24 18:40:27,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:27,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:28,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:40:28,897 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250231121] [2025-04-24 18:40:28,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250231121] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:40:28,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:40:28,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2025-04-24 18:40:28,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605986554] [2025-04-24 18:40:28,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:40:28,898 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-24 18:40:28,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:40:28,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-24 18:40:28,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2025-04-24 18:40:28,899 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:28,899 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:40:28,899 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 22 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) [2025-04-24 18:40:28,899 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:28,899 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:40:28,899 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:28,899 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2025-04-24 18:40:28,899 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2025-04-24 18:40:28,899 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-04-24 18:40:28,899 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2025-04-24 18:40:28,899 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:30,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:40:30,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-24 18:40:30,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-24 18:40:30,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-24 18:40:30,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-24 18:40:30,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-24 18:40:30,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-04-24 18:40:30,017 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-24 18:40:30,017 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-04-24 18:40:30,017 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:40:30,017 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:40:30,017 INFO L139 ounterexampleChecker]: Examining path program with hash 884979493, occurence #1 [2025-04-24 18:40:30,017 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:40:30,017 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:40:30,017 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:40:30,017 INFO L85 PathProgramCache]: Analyzing trace with hash 878248986, now seen corresponding path program 1 times [2025-04-24 18:40:30,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:40:30,018 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452359565] [2025-04-24 18:40:30,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:30,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:40:30,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-04-24 18:40:30,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-04-24 18:40:30,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:30,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:40:31,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:40:31,956 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452359565] [2025-04-24 18:40:31,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452359565] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-24 18:40:31,956 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951072626] [2025-04-24 18:40:31,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:40:31,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:40:31,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:40:31,958 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 18:40:31,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-24 18:40:32,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-04-24 18:40:32,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-04-24 18:40:32,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:40:32,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:40:32,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-04-24 18:40:32,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 18:40:32,360 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:40:32,550 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-04-24 18:40:32,658 INFO L325 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2025-04-24 18:40:32,659 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 89 [2025-04-24 18:40:32,669 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2025-04-24 18:40:32,680 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-24 18:40:32,681 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-04-24 18:40:32,686 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 12 [2025-04-24 18:40:32,709 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2025-04-24 18:40:32,716 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2025-04-24 18:40:33,131 INFO L325 Elim1Store]: treesize reduction 48, result has 66.0 percent of original size [2025-04-24 18:40:33,131 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 149 [2025-04-24 18:40:33,136 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2025-04-24 18:40:34,422 INFO L325 Elim1Store]: treesize reduction 248, result has 61.8 percent of original size [2025-04-24 18:40:34,422 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 44 case distinctions, treesize of input 164 treesize of output 492