./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 559b036c 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/weaver/popl20-mult-equiv.wvr.c -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 2aa715856437bb3403b6a2717a4123b124cdc9b291b63ee677b7c1993b3be7b6 --- Real Ultimate output --- This is Ultimate 0.2.3-?-559b036-m [2023-11-23 04:05:02,710 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 04:05:02,775 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-23 04:05:02,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 04:05:02,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 04:05:02,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 04:05:02,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 04:05:02,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 04:05:02,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 04:05:02,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 04:05:02,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 04:05:02,810 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 04:05:02,810 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 04:05:02,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 04:05:02,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 04:05:02,810 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 04:05:02,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 04:05:02,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 04:05:02,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 04:05:02,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 04:05:02,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 04:05:02,824 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 04:05:02,824 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 04:05:02,824 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 04:05:02,824 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 04:05:02,825 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 04:05:02,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 04:05:02,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 04:05:02,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 04:05:02,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 04:05:02,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 04:05:02,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 04:05:02,826 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 04:05:02,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 04:05:02,826 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-23 04:05:02,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 04:05:02,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 04:05:02,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-23 04:05:02,826 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 04:05:02,827 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-23 04:05:02,827 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-23 04:05:02,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aa715856437bb3403b6a2717a4123b124cdc9b291b63ee677b7c1993b3be7b6 [2023-11-23 04:05:03,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 04:05:03,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 04:05:03,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 04:05:03,084 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 04:05:03,085 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 04:05:03,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-11-23 04:05:04,296 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 04:05:04,471 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 04:05:04,472 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2023-11-23 04:05:04,478 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/c971f15c2/bdf66fae98434dc9bbc58c94adef9738/FLAG99a5763f2 [2023-11-23 04:05:04,489 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/c971f15c2/bdf66fae98434dc9bbc58c94adef9738 [2023-11-23 04:05:04,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 04:05:04,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 04:05:04,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 04:05:04,493 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 04:05:04,497 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 04:05:04,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:05:04" (1/1) ... [2023-11-23 04:05:04,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7022c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04, skipping insertion in model container [2023-11-23 04:05:04,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:05:04" (1/1) ... [2023-11-23 04:05:04,515 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 04:05:04,637 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2630,2643] [2023-11-23 04:05:04,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 04:05:04,649 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 04:05:04,669 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2630,2643] [2023-11-23 04:05:04,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 04:05:04,677 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 04:05:04,681 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 04:05:04,687 INFO L206 MainTranslator]: Completed translation [2023-11-23 04:05:04,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04 WrapperNode [2023-11-23 04:05:04,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 04:05:04,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 04:05:04,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 04:05:04,689 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 04:05:04,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04" (1/1) ... [2023-11-23 04:05:04,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04" (1/1) ... [2023-11-23 04:05:04,743 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-11-23 04:05:04,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 04:05:04,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 04:05:04,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 04:05:04,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 04:05:04,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04" (1/1) ... [2023-11-23 04:05:04,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04" (1/1) ... [2023-11-23 04:05:04,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04" (1/1) ... [2023-11-23 04:05:04,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04" (1/1) ... [2023-11-23 04:05:04,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04" (1/1) ... [2023-11-23 04:05:04,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04" (1/1) ... [2023-11-23 04:05:04,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04" (1/1) ... [2023-11-23 04:05:04,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04" (1/1) ... [2023-11-23 04:05:04,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 04:05:04,791 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 04:05:04,792 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 04:05:04,792 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 04:05:04,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04" (1/1) ... [2023-11-23 04:05:04,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 04:05:04,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 04:05:04,858 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) [2023-11-23 04:05:04,876 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 [2023-11-23 04:05:04,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 04:05:04,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 04:05:04,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 04:05:04,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 04:05:04,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 04:05:04,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 04:05:04,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 04:05:04,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 04:05:04,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 04:05:04,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 04:05:04,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 04:05:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 04:05:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 04:05:04,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 04:05:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 04:05:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 04:05:04,905 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 04:05:04,999 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 04:05:05,000 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 04:05:05,161 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 04:05:05,307 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 04:05:05,310 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 04:05:05,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:05:05 BoogieIcfgContainer [2023-11-23 04:05:05,311 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 04:05:05,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 04:05:05,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 04:05:05,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 04:05:05,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:05:04" (1/3) ... [2023-11-23 04:05:05,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bb2c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:05:05, skipping insertion in model container [2023-11-23 04:05:05,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:04" (2/3) ... [2023-11-23 04:05:05,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bb2c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:05:05, skipping insertion in model container [2023-11-23 04:05:05,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:05:05" (3/3) ... [2023-11-23 04:05:05,321 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2023-11-23 04:05:05,327 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 04:05:05,334 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 04:05:05,335 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 04:05:05,335 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 04:05:05,401 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 04:05:05,438 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 04:05:05,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-23 04:05:05,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 04:05:05,453 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) [2023-11-23 04:05:05,482 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 [2023-11-23 04:05:05,493 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-23 04:05:05,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-23 04:05:05,509 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;@5bd49e5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 04:05:05,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-23 04:05:06,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 04:05:06,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 04:05:06,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1738771257, now seen corresponding path program 1 times [2023-11-23 04:05:06,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 04:05:06,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545145303] [2023-11-23 04:05:06,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 04:05:06,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 04:05:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 04:05:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 04:05:07,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 04:05:07,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545145303] [2023-11-23 04:05:07,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545145303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 04:05:07,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 04:05:07,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 04:05:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555564902] [2023-11-23 04:05:07,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 04:05:07,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 04:05:07,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 04:05:07,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 04:05:07,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 04:05:07,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 04:05:07,556 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 04:05:07,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 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) [2023-11-23 04:05:07,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 04:05:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 04:05:07,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 04:05:07,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 04:05:07,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 04:05:07,672 INFO L85 PathProgramCache]: Analyzing trace with hash 939835441, now seen corresponding path program 1 times [2023-11-23 04:05:07,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 04:05:07,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859923081] [2023-11-23 04:05:07,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 04:05:07,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 04:05:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 04:05:08,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 04:05:08,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 04:05:08,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859923081] [2023-11-23 04:05:08,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859923081] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 04:05:08,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610795147] [2023-11-23 04:05:08,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 04:05:08,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 04:05:08,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 04:05:08,669 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) [2023-11-23 04:05:08,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 04:05:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 04:05:08,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 04:05:08,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 04:05:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 04:05:09,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 04:05:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 04:05:10,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610795147] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 04:05:10,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 04:05:10,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 29 [2023-11-23 04:05:10,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326029487] [2023-11-23 04:05:10,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 04:05:10,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-23 04:05:10,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 04:05:10,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-23 04:05:10,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2023-11-23 04:05:10,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 04:05:10,530 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 04:05:10,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.8) internal successors, (84), 29 states have internal predecessors, (84), 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) [2023-11-23 04:05:10,531 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-23 04:05:10,531 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 04:05:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 04:05:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-23 04:05:14,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 04:05:14,601 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,SelfDestructingSolverStorable1 [2023-11-23 04:05:14,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 04:05:14,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 04:05:14,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1087819229, now seen corresponding path program 2 times [2023-11-23 04:05:14,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 04:05:14,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309014614] [2023-11-23 04:05:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 04:05:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 04:05:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 04:05:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 95 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 04:05:15,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 04:05:15,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309014614] [2023-11-23 04:05:15,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309014614] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 04:05:15,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202417386] [2023-11-23 04:05:15,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 04:05:15,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 04:05:15,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 04:05:15,053 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) [2023-11-23 04:05:15,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 04:05:15,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 04:05:15,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 04:05:15,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 04:05:15,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 04:05:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 28 proven. 111 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 04:05:17,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 04:05:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 04:05:18,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202417386] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 04:05:18,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 04:05:18,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 18, 21] total 43 [2023-11-23 04:05:18,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091666649] [2023-11-23 04:05:18,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 04:05:18,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-23 04:05:18,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 04:05:18,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-23 04:05:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1561, Unknown=0, NotChecked=0, Total=1806 [2023-11-23 04:05:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 04:05:18,777 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 04:05:18,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.7209302325581395) internal successors, (160), 43 states have internal predecessors, (160), 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) [2023-11-23 04:05:18,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-23 04:05:18,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. [2023-11-23 04:05:18,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 04:05:58,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 04:05:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-11-23 04:05:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2023-11-23 04:05:58,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 04:05:58,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 04:05:58,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 04:05:58,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 04:05:58,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1899385649, now seen corresponding path program 3 times [2023-11-23 04:05:58,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 04:05:58,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545653383] [2023-11-23 04:05:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 04:05:58,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 04:05:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 04:06:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 244 proven. 677 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 04:06:12,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 04:06:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545653383] [2023-11-23 04:06:12,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545653383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 04:06:12,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019762408] [2023-11-23 04:06:12,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 04:06:12,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 04:06:12,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 04:06:12,497 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) [2023-11-23 04:06:12,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 04:06:12,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-23 04:06:12,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 04:06:12,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 04:06:12,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 04:06:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 158 proven. 1 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2023-11-23 04:06:13,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 04:06:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 139 proven. 7 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2023-11-23 04:06:14,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019762408] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 04:06:14,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 04:06:14,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 9, 11] total 96 [2023-11-23 04:06:14,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098276881] [2023-11-23 04:06:14,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 04:06:14,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-23 04:06:14,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 04:06:14,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-23 04:06:14,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=8553, Unknown=0, NotChecked=0, Total=9120 [2023-11-23 04:06:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 04:06:14,113 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 04:06:14,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.84375) internal successors, (177), 96 states have internal predecessors, (177), 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) [2023-11-23 04:06:14,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-23 04:06:14,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 79 states. [2023-11-23 04:06:14,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 199 states. [2023-11-23 04:06:14,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 04:06:58,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 04:06:58,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-11-23 04:06:58,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2023-11-23 04:06:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 342 states. [2023-11-23 04:06:58,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 04:06:58,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 04:06:58,327 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 04:06:58,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 04:06:58,328 INFO L85 PathProgramCache]: Analyzing trace with hash 400422855, now seen corresponding path program 4 times [2023-11-23 04:06:58,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 04:06:58,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446049406] [2023-11-23 04:06:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 04:06:58,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 04:06:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 04:08:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 391 proven. 1822 refuted. 12 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 04:08:12,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 04:08:12,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446049406] [2023-11-23 04:08:12,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446049406] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 04:08:12,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665279818] [2023-11-23 04:08:12,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 04:08:12,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 04:08:12,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 04:08:12,165 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) [2023-11-23 04:08:12,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 04:08:12,312 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 04:08:12,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 04:08:12,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 04:08:12,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 04:08:12,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 170 proven. 1 refuted. 0 times theorem prover too weak. 2074 trivial. 0 not checked. [2023-11-23 04:08:12,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 04:08:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 166 proven. 5 refuted. 0 times theorem prover too weak. 2074 trivial. 0 not checked. [2023-11-23 04:08:14,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665279818] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 04:08:14,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 04:08:14,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 6, 9] total 103 [2023-11-23 04:08:14,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234024790] [2023-11-23 04:08:14,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 04:08:14,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2023-11-23 04:08:14,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 04:08:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2023-11-23 04:08:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=10158, Unknown=3, NotChecked=0, Total=10506 [2023-11-23 04:08:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 04:08:14,064 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 04:08:14,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.349514563106796) internal successors, (242), 103 states have internal predecessors, (242), 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) [2023-11-23 04:08:14,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-23 04:08:14,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 80 states. [2023-11-23 04:08:14,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 199 states. [2023-11-23 04:08:14,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 342 states. [2023-11-23 04:08:14,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 04:12:12,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 04:12:39,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 04:12:51,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Killed by 15