./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20174008 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/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 0.2.3-?-2017400-m [2023-11-24 08:08:04,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 08:08:04,159 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-24 08:08:04,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 08:08:04,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 08:08:04,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 08:08:04,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 08:08:04,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 08:08:04,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 08:08:04,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 08:08:04,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 08:08:04,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 08:08:04,205 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 08:08:04,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 08:08:04,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 08:08:04,206 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 08:08:04,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 08:08:04,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 08:08:04,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 08:08:04,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 08:08:04,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 08:08:04,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 08:08:04,208 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 08:08:04,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 08:08:04,208 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 08:08:04,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 08:08:04,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 08:08:04,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 08:08:04,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 08:08:04,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 08:08:04,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 08:08:04,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 08:08:04,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 08:08:04,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 08:08:04,211 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-24 08:08:04,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 08:08:04,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 08:08:04,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-24 08:08:04,212 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 08:08:04,212 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-24 08:08:04,213 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-24 08:08:04,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2023-11-24 08:08:04,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 08:08:04,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 08:08:04,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 08:08:04,449 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 08:08:04,450 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 08:08:04,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-11-24 08:08:05,598 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 08:08:05,835 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 08:08:05,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-11-24 08:08:05,857 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/12ea6c615/c4d0e312a83d4f119397ead56891c962/FLAG12ca8eab9 [2023-11-24 08:08:05,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/12ea6c615/c4d0e312a83d4f119397ead56891c962 [2023-11-24 08:08:05,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 08:08:05,881 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 08:08:05,884 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 08:08:05,884 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 08:08:05,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 08:08:05,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 08:08:05" (1/1) ... [2023-11-24 08:08:05,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf0f2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:05, skipping insertion in model container [2023-11-24 08:08:05,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 08:08:05" (1/1) ... [2023-11-24 08:08:05,938 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 08:08:06,273 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30869,30882] [2023-11-24 08:08:06,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 08:08:06,288 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 08:08:06,325 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30869,30882] [2023-11-24 08:08:06,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 08:08:06,351 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 08:08:06,352 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 08:08:06,357 INFO L206 MainTranslator]: Completed translation [2023-11-24 08:08:06,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:06 WrapperNode [2023-11-24 08:08:06,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 08:08:06,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 08:08:06,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 08:08:06,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 08:08:06,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:06" (1/1) ... [2023-11-24 08:08:06,389 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:06" (1/1) ... [2023-11-24 08:08:06,414 INFO L138 Inliner]: procedures = 172, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 105 [2023-11-24 08:08:06,414 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 08:08:06,415 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 08:08:06,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 08:08:06,415 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 08:08:06,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:06" (1/1) ... [2023-11-24 08:08:06,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:06" (1/1) ... [2023-11-24 08:08:06,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:06" (1/1) ... [2023-11-24 08:08:06,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:06" (1/1) ... [2023-11-24 08:08:06,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:06" (1/1) ... [2023-11-24 08:08:06,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:06" (1/1) ... [2023-11-24 08:08:06,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:06" (1/1) ... [2023-11-24 08:08:06,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:06" (1/1) ... [2023-11-24 08:08:06,450 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 08:08:06,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 08:08:06,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 08:08:06,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 08:08:06,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:06" (1/1) ... [2023-11-24 08:08:06,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 08:08:06,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-24 08:08:06,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 08:08:06,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 08:08:06,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 08:08:06,527 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-24 08:08:06,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-24 08:08:06,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 08:08:06,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 08:08:06,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 08:08:06,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 08:08:06,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 08:08:06,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 08:08:06,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 08:08:06,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 08:08:06,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 08:08:06,530 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 08:08:06,637 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 08:08:06,639 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 08:08:06,778 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 08:08:06,874 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 08:08:06,874 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-24 08:08:06,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 08:08:06 BoogieIcfgContainer [2023-11-24 08:08:06,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 08:08:06,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 08:08:06,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 08:08:06,879 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 08:08:06,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 08:08:05" (1/3) ... [2023-11-24 08:08:06,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7398634a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 08:08:06, skipping insertion in model container [2023-11-24 08:08:06,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 08:08:06" (2/3) ... [2023-11-24 08:08:06,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7398634a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 08:08:06, skipping insertion in model container [2023-11-24 08:08:06,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 08:08:06" (3/3) ... [2023-11-24 08:08:06,882 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2023-11-24 08:08:06,888 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 08:08:06,897 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 08:08:06,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 08:08:06,898 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 08:08:06,948 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 08:08:06,983 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 08:08:06,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 08:08:06,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-24 08:08:07,020 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) [2023-11-24 08:08:07,054 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 [2023-11-24 08:08:07,084 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 08:08:07,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2023-11-24 08:08:07,102 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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;@5187414f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 08:08:07,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 08:08:07,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 08:08:07,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 08:08:07,231 INFO L85 PathProgramCache]: Analyzing trace with hash 609042331, now seen corresponding path program 1 times [2023-11-24 08:08:07,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 08:08:07,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487812171] [2023-11-24 08:08:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 08:08:07,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 08:08:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 08:08:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 08:08:08,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 08:08:08,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487812171] [2023-11-24 08:08:08,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487812171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 08:08:08,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647562262] [2023-11-24 08:08:08,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 08:08:08,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 08:08:08,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-24 08:08:08,109 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) [2023-11-24 08:08:08,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 08:08:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 08:08:08,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-24 08:08:08,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 08:08:08,249 INFO L378 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 6 treesize of output 5 [2023-11-24 08:08:08,288 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-24 08:08:08,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-24 08:08:08,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-24 08:08:08,355 INFO L378 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 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 08:08:08,516 INFO L349 Elim1Store]: treesize reduction 70, result has 17.6 percent of original size [2023-11-24 08:08:08,517 INFO L378 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 2 case distinctions, treesize of input 35 treesize of output 25 [2023-11-24 08:08:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 08:08:08,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 08:08:08,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 08:08:08,853 INFO L378 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 [2023-11-24 08:08:08,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 08:08:08,870 INFO L378 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 [2023-11-24 08:08:08,987 INFO L349 Elim1Store]: treesize reduction 32, result has 54.9 percent of original size [2023-11-24 08:08:08,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 1015 treesize of output 996 [2023-11-24 08:08:09,015 INFO L378 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 357 treesize of output 341 [2023-11-24 08:08:09,137 INFO L378 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 [2023-11-24 08:08:09,174 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 08:08:09,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 642 treesize of output 624 [2023-11-24 08:08:09,204 INFO L378 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 293 treesize of output 277 [2023-11-24 08:08:09,299 INFO L378 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 21 treesize of output 17 [2023-11-24 08:08:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 08:08:09,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647562262] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 08:08:09,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 08:08:09,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2023-11-24 08:08:09,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637937911] [2023-11-24 08:08:09,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 08:08:09,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-24 08:08:09,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 08:08:09,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-24 08:08:09,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=386, Unknown=6, NotChecked=0, Total=462 [2023-11-24 08:08:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 08:08:09,418 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 08:08:09,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 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) [2023-11-24 08:08:09,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 08:08:12,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 08:08:12,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 08:08:12,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 08:08:12,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 08:08:12,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 08:08:12,362 INFO L85 PathProgramCache]: Analyzing trace with hash -347544293, now seen corresponding path program 2 times [2023-11-24 08:08:12,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 08:08:12,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626629789] [2023-11-24 08:08:12,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 08:08:12,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 08:08:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 08:08:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 08:08:12,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 08:08:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626629789] [2023-11-24 08:08:12,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626629789] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 08:08:12,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970770068] [2023-11-24 08:08:12,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 08:08:12,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 08:08:12,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-24 08:08:12,745 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) [2023-11-24 08:08:12,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 08:08:12,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 08:08:12,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 08:08:12,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-24 08:08:12,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 08:08:12,843 INFO L378 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 6 treesize of output 5 [2023-11-24 08:08:12,866 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-24 08:08:12,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-24 08:08:12,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-24 08:08:12,928 INFO L378 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 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 08:08:13,068 INFO L349 Elim1Store]: treesize reduction 102, result has 32.5 percent of original size [2023-11-24 08:08:13,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 95 [2023-11-24 08:08:13,145 INFO L349 Elim1Store]: treesize reduction 39, result has 48.7 percent of original size [2023-11-24 08:08:13,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 52 [2023-11-24 08:08:13,181 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 08:08:13,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 08:08:13,191 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 08:08:13,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 08:08:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 08:08:14,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 08:08:14,379 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_108 (Array Int Int)) (|~#top~0.base| Int) (|thr1Thread1of1ForFork0_push_~#ret~0#1.base| Int)) (not (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_108))) (store .cse1 |~#top~0.base| (store (select .cse1 |~#top~0.base|) |c_~#top~0.offset| (select (select .cse1 |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|)))))) (store .cse0 |thr1Thread1of1ForFork0_push_~#ret~0#1.base| (store (select .cse0 |thr1Thread1of1ForFork0_push_~#ret~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |~#top~0.base|) |c_~#top~0.offset|) 0))) is different from false [2023-11-24 08:08:14,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 08:08:14,407 INFO L378 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 [2023-11-24 08:08:14,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 08:08:14,416 INFO L378 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 [2023-11-24 08:08:14,544 INFO L349 Elim1Store]: treesize reduction 32, result has 54.9 percent of original size [2023-11-24 08:08:14,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 1347 treesize of output 1296 [2023-11-24 08:08:14,563 INFO L378 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 357 treesize of output 341 [2023-11-24 08:08:14,618 INFO L378 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 [2023-11-24 08:08:14,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 08:08:14,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 642 treesize of output 624 [2023-11-24 08:08:14,648 INFO L378 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 293 treesize of output 277 [2023-11-24 08:08:14,695 INFO L378 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 21 treesize of output 17 [2023-11-24 08:08:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-24 08:08:14,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970770068] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 08:08:14,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 08:08:14,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-11-24 08:08:14,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025944151] [2023-11-24 08:08:14,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 08:08:14,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-24 08:08:14,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 08:08:14,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-24 08:08:14,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=394, Unknown=5, NotChecked=40, Total=506 [2023-11-24 08:08:14,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 08:08:14,783 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 08:08:14,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 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) [2023-11-24 08:08:14,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-24 08:08:14,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 08:08:14,956 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse4 (= |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| |c_~#top~0.base|)) (.cse9 (not (= c_~next_alloc_idx~0 0))) (.cse10 (forall ((|v_thr1Thread1of1ForFork0_push_~#newTop~0#1.base_21| Int)) (not (= (select |c_#valid| |v_thr1Thread1of1ForFork0_push_~#newTop~0#1.base_21|) 0))))) (and (= |c_~#top~0.offset| 0) (let ((.cse0 (select (select |c_#memory_int| |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base|) 0))) (let ((.cse1 (= (select (select |c_#memory_int| |c_~#top~0.base|) 0) 1)) (.cse2 (= 1 .cse0))) (or (= 0 .cse0) (and .cse1 .cse2 (let ((.cse3 (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (and (= (select (store (store |c_#memory_int| |c_~#top~0.base| v_DerPreprocessor_2) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_3) |c_~#top~0.base|) v_DerPreprocessor_2) (= (select v_DerPreprocessor_3 0) 0))))) (or (and (exists ((v_DerPreprocessor_3 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (and (= (select (select (store (store |c_#memory_int| |c_~#top~0.base| v_DerPreprocessor_2) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_3) |c_~#top~0.base|) 0) 1) (= (select v_DerPreprocessor_3 0) 0))) (exists ((v_prenex_14 Int)) (= (select (select |c_#memory_int| v_prenex_14) 0) 1))) (and (exists ((v_prenex_15 Int)) (and (not (= v_prenex_15 |c_~#top~0.base|)) (= (select (select |c_#memory_int| v_prenex_15) 0) 1))) .cse3) (and .cse4 (exists ((|thr1Thread1of1ForFork0_push_~#newTop~0#1.base| Int)) (= (select (select |c_#memory_int| |thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) 0) 1)) .cse3)))) (and .cse1 .cse2 (or (exists ((v_DerPreprocessor_5 (Array Int Int))) (and (= (select v_DerPreprocessor_5 0) 0) (exists ((v_DerPreprocessor_4 (Array Int Int))) (let ((.cse5 (store (store |c_#memory_int| |c_~#top~0.base| v_DerPreprocessor_4) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_5))) (and (exists ((v_prenex_18 Int) (v_prenex_19 Int)) (and (= 1 (select (select .cse5 v_prenex_19) v_prenex_18)) (= (select (select |c_#memory_int| v_prenex_19) v_prenex_18) 1))) (= (select (select .cse5 |c_~#top~0.base|) 0) 1)))))) (exists ((v_DerPreprocessor_5 (Array Int Int))) (and (= (select v_DerPreprocessor_5 0) 0) (exists ((v_DerPreprocessor_4 (Array Int Int))) (let ((.cse6 (store (store |c_#memory_int| |c_~#top~0.base| v_DerPreprocessor_4) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_5))) (and (= v_DerPreprocessor_4 (select .cse6 |c_~#top~0.base|)) (exists ((v_prenex_23 Int) (v_prenex_22 Int)) (and (= (select (select |c_#memory_int| v_prenex_23) v_prenex_22) 1) (= 1 (select (select .cse6 v_prenex_23) v_prenex_22)) (not (= v_prenex_23 |c_~#top~0.base|))))))))) (and (exists ((|thr1Thread1of1ForFork0_push_~#newTop~0#1.offset| Int) (v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int)) (|thr1Thread1of1ForFork0_push_~#newTop~0#1.base| Int)) (let ((.cse7 (store (store |c_#memory_int| |c_~#top~0.base| v_DerPreprocessor_4) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_5))) (and (= (select v_DerPreprocessor_5 0) 0) (= v_DerPreprocessor_4 (select .cse7 |c_~#top~0.base|)) (= (select (select |c_#memory_int| |thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|) 1) (= (select (select .cse7 |thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|) 1)))) .cse4) (exists ((v_DerPreprocessor_5 (Array Int Int))) (and (= (select v_DerPreprocessor_5 0) 0) (exists ((v_DerPreprocessor_4 (Array Int Int))) (let ((.cse8 (store (store |c_#memory_int| |c_~#top~0.base| v_DerPreprocessor_4) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_5))) (and (= v_DerPreprocessor_4 (select .cse8 |c_~#top~0.base|)) (exists ((v_prenex_21 Int) (v_prenex_20 Int)) (and (not (= v_prenex_20 0)) (= (select (select |c_#memory_int| v_prenex_21) v_prenex_20) 1) (= (select (select .cse8 v_prenex_21) v_prenex_20) 1))))))))))))) (or (= |c_~#top~0.offset| |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset|) (not .cse4)) (not (= (select |c_#valid| |c_ULTIMATE.start_main_~#t~0#1.base|) 0)) (not (= |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base| |c_ULTIMATE.start_main_~#t~0#1.base|)) (not (= |c_thr1Thread1of1ForFork0_push_#t~mem8#1| 0)) (= |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 0) (or .cse9 .cse10) .cse9 (or (< c_~next_alloc_idx~0 65) .cse10) (<= c_~next_alloc_idx~0 64))) is different from true [2023-11-24 08:08:15,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 08:08:15,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 08:08:15,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 08:08:15,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 08:08:15,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 08:08:15,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 08:08:15,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1326166078, now seen corresponding path program 1 times [2023-11-24 08:08:15,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 08:08:15,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441919621] [2023-11-24 08:08:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 08:08:15,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 08:08:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 08:08:15,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 08:08:15,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 08:08:15,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441919621] [2023-11-24 08:08:15,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441919621] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 08:08:15,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589919641] [2023-11-24 08:08:15,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 08:08:15,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 08:08:15,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-24 08:08:15,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 08:08:15,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 08:08:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 08:08:15,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-24 08:08:15,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 08:08:15,996 INFO L378 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 6 treesize of output 5 [2023-11-24 08:08:16,021 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-24 08:08:16,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-24 08:08:16,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2023-11-24 08:08:16,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 08:08:16,182 INFO L349 Elim1Store]: treesize reduction 74, result has 20.4 percent of original size [2023-11-24 08:08:16,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 111 [2023-11-24 08:08:16,201 INFO L378 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 1 [2023-11-24 08:08:16,210 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-24 08:08:16,211 INFO L378 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 1 case distinctions, treesize of input 52 treesize of output 35 [2023-11-24 08:08:16,548 INFO L349 Elim1Store]: treesize reduction 67, result has 38.5 percent of original size [2023-11-24 08:08:16,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 81 [2023-11-24 08:08:16,577 INFO L349 Elim1Store]: treesize reduction 43, result has 29.5 percent of original size [2023-11-24 08:08:16,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 95 treesize of output 124 [2023-11-24 08:08:16,604 INFO L349 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2023-11-24 08:08:16,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 62 [2023-11-24 08:08:16,671 INFO L378 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 [2023-11-24 08:08:16,760 INFO L378 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 40 [2023-11-24 08:08:16,792 INFO L378 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 43 treesize of output 38 [2023-11-24 08:08:16,799 INFO L378 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 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-24 08:08:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 08:08:17,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 08:08:17,277 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_thr1Thread1of1ForFork0_push_#t~mem8#1_25| Int) (v_ArrVal_186 Int) (v_DerPreprocessor_16 (Array Int Int)) (|~#top~0.base| Int)) (let ((.cse1 (store |c_#memory_int| |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_16))) (or (< v_ArrVal_186 |v_thr1Thread1of1ForFork0_push_#t~mem8#1_25|) (not (= (select (select (let ((.cse0 (select .cse1 |~#top~0.base|))) (store (store |c_#memory_int| |~#top~0.base| (store .cse0 |c_~#top~0.offset| v_ArrVal_186)) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| (store (select (store .cse1 |~#top~0.base| (store .cse0 |c_~#top~0.offset| |v_thr1Thread1of1ForFork0_push_#t~mem8#1_25|)) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |~#top~0.base|) |c_~#top~0.offset|) 0)) (< 0 (select v_DerPreprocessor_16 |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset|)) (< |v_thr1Thread1of1ForFork0_push_#t~mem8#1_25| (select (select .cse1 |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|))))) is different from false [2023-11-24 08:08:17,313 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int)) (|v_thr1Thread1of1ForFork0_push_#t~mem8#1_25| Int) (v_ArrVal_186 Int) (v_DerPreprocessor_16 (Array Int Int)) (|~#top~0.base| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_180))) (let ((.cse0 (store .cse1 |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_16))) (or (< v_ArrVal_186 |v_thr1Thread1of1ForFork0_push_#t~mem8#1_25|) (< |v_thr1Thread1of1ForFork0_push_#t~mem8#1_25| (select (select .cse0 |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|)) (< 0 (select v_DerPreprocessor_16 |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset|)) (not (= (select (select (let ((.cse2 (select .cse0 |~#top~0.base|))) (store (store .cse1 |~#top~0.base| (store .cse2 |c_~#top~0.offset| v_ArrVal_186)) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base| (store (select (store .cse0 |~#top~0.base| (store .cse2 |c_~#top~0.offset| |v_thr1Thread1of1ForFork0_push_#t~mem8#1_25|)) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |~#top~0.base|) |c_~#top~0.offset|) 0)))))) is different from false [2023-11-24 08:08:17,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 08:08:17,365 INFO L378 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 [2023-11-24 08:08:17,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 08:08:17,376 INFO L378 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 [2023-11-24 08:08:17,430 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 08:08:17,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1831 treesize of output 1840 [2023-11-24 08:08:17,444 INFO L378 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 263 treesize of output 261 [2023-11-24 08:08:17,451 INFO L378 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 261 treesize of output 259 [2023-11-24 08:08:17,457 INFO L378 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 266 treesize of output 262 [2023-11-24 08:08:17,503 INFO L378 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 27 treesize of output 25 [2023-11-24 08:08:17,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 08:08:17,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 105 treesize of output 175 [2023-11-24 08:08:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2023-11-24 08:08:18,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589919641] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 08:08:18,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 08:08:18,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-11-24 08:08:18,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833828927] [2023-11-24 08:08:18,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 08:08:18,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-24 08:08:18,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 08:08:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-24 08:08:18,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=679, Unknown=14, NotChecked=110, Total=930 [2023-11-24 08:08:18,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 08:08:18,241 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 08:08:18,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.1) internal successors, (63), 30 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 08:08:18,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-24 08:08:18,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-11-24 08:08:18,242 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 08:08:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 08:08:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-24 08:08:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-24 08:08:19,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 08:08:20,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 08:08:20,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 08:08:20,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 08:08:20,005 INFO L85 PathProgramCache]: Analyzing trace with hash -522588581, now seen corresponding path program 3 times [2023-11-24 08:08:20,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 08:08:20,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186331523] [2023-11-24 08:08:20,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 08:08:20,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 08:08:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 08:08:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 08:08:20,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 08:08:20,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186331523] [2023-11-24 08:08:20,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186331523] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 08:08:20,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301625102] [2023-11-24 08:08:20,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 08:08:20,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 08:08:20,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-24 08:08:20,304 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 08:08:20,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 08:08:20,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 08:08:20,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 08:08:20,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-24 08:08:20,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 08:08:20,386 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-24 08:08:20,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-24 08:08:20,438 INFO L378 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 [2023-11-24 08:08:20,570 INFO L349 Elim1Store]: treesize reduction 70, result has 17.6 percent of original size [2023-11-24 08:08:20,570 INFO L378 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 2 case distinctions, treesize of input 35 treesize of output 25 [2023-11-24 08:08:20,624 INFO L349 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2023-11-24 08:08:20,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 47 [2023-11-24 08:08:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 08:08:20,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 08:08:20,687 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_242 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_242) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) is different from false [2023-11-24 08:08:20,754 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_~#top~0.base|))) (let ((.cse2 (= |c_thr1Thread1of1ForFork0_push_~oldTop~0#1| (select .cse1 |c_~#top~0.offset|)))) (and (or (forall ((|thr1Thread1of1ForFork0_push_~#ret~0#1.base| Int) (v_ArrVal_242 (Array Int Int))) (not (= (select (select (store (let ((.cse0 (store |c_#memory_int| |c_~#top~0.base| (store .cse1 |c_~#top~0.offset| (select (select |c_#memory_int| |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|))))) (store .cse0 |thr1Thread1of1ForFork0_push_~#ret~0#1.base| (store (select .cse0 |thr1Thread1of1ForFork0_push_~#ret~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_242) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) (not .cse2)) (or (forall ((|thr1Thread1of1ForFork0_push_~#ret~0#1.base| Int) (v_DerPreprocessor_18 (Array Int Int)) (v_ArrVal_242 (Array Int Int))) (not (= (select (select (store (store |c_#memory_int| |thr1Thread1of1ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_18) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_242) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) .cse2)))) is different from false [2023-11-24 08:08:20,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 08:08:20,805 INFO L378 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 [2023-11-24 08:08:20,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 08:08:20,820 INFO L378 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 [2023-11-24 08:08:20,878 INFO L349 Elim1Store]: treesize reduction 27, result has 60.9 percent of original size [2023-11-24 08:08:20,878 INFO L378 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 105 treesize of output 127 [2023-11-24 08:08:20,947 INFO L349 Elim1Store]: treesize reduction 74, result has 46.0 percent of original size [2023-11-24 08:08:20,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 108 treesize of output 163 [2023-11-24 08:08:20,986 INFO L349 Elim1Store]: treesize reduction 40, result has 38.5 percent of original size [2023-11-24 08:08:20,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 132 treesize of output 129 [2023-11-24 08:08:20,996 INFO L378 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 74 treesize of output 72 [2023-11-24 08:08:21,232 INFO L349 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2023-11-24 08:08:21,233 INFO L378 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 2 case distinctions, treesize of input 166 treesize of output 166 [2023-11-24 08:08:21,283 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 08:08:21,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8 treesize of output 4 [2023-11-24 08:08:21,293 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 08:08:21,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-11-24 08:08:21,375 INFO L378 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 170 treesize of output 164 [2023-11-24 08:08:21,755 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 08:08:21,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 70 [2023-11-24 08:08:21,824 INFO L349 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2023-11-24 08:08:21,824 INFO L378 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 2 case distinctions, treesize of input 14 treesize of output 27 [2023-11-24 08:08:21,860 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 08:08:21,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 70 [2023-11-24 08:08:41,992 WARN L293 SmtUtils]: Spent 20.11s on a formula simplification. DAG size of input: 505 DAG size of output: 154 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-24 08:08:41,992 INFO L349 Elim1Store]: treesize reduction 819, result has 24.0 percent of original size [2023-11-24 08:08:41,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 16 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 30 new quantified variables, introduced 106 case distinctions, treesize of input 1261 treesize of output 1001 [2023-11-24 08:17:32,047 WARN L293 SmtUtils]: Spent 8.83m on a formula simplification. DAG size of input: 5475 DAG size of output: 475 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-24 08:17:32,048 INFO L349 Elim1Store]: treesize reduction 13928, result has 5.6 percent of original size [2023-11-24 08:17:32,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 16 stores, 30 select indices, 30 select index equivalence classes, 0 disjoint index pairs (out of 435 index pairs), introduced 46 new quantified variables, introduced 931 case distinctions, treesize of input 891 treesize of output 3247 [2023-11-24 08:17:52,192 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 08:17:52,193 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 08:17:52,196 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 08:17:52,196 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 08:17:52,203 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 08:17:52,208 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 08:17:52,212 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 08:17:52,240 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 08:17:52,264 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 08:17:52,274 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 08:17:52,280 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 08:17:52,328 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 08:17:53,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 08:17:54,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 08:17:54,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 08:17:54,821 INFO L224 Elim1Store]: Index analysis took 1782 ms Killed by 15