./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking FORWARD -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b86fb0b7 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/goblint-regression/28-race_reach_75-tricky_address2_racefree.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 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking FORWARD -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.conditional-comm-b86fb0b-m [2024-10-17 18:46:30,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-17 18:46:30,506 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-17 18:46:30,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-17 18:46:30,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-17 18:46:30,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-17 18:46:30,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-17 18:46:30,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-17 18:46:30,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-17 18:46:30,549 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-17 18:46:30,550 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-17 18:46:30,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-17 18:46:30,550 INFO L153 SettingsManager]: * Use SBE=true [2024-10-17 18:46:30,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-17 18:46:30,552 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-17 18:46:30,552 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-17 18:46:30,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-17 18:46:30,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-17 18:46:30,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-17 18:46:30,553 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-17 18:46:30,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-17 18:46:30,554 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-17 18:46:30,555 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-17 18:46:30,555 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-17 18:46:30,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-17 18:46:30,555 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-17 18:46:30,556 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-17 18:46:30,556 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-17 18:46:30,556 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-17 18:46:30,557 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-17 18:46:30,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-17 18:46:30,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-17 18:46:30,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-17 18:46:30,558 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-17 18:46:30,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-17 18:46:30,558 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-17 18:46:30,559 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-17 18:46:30,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-17 18:46:30,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-17 18:46:30,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-17 18:46:30,560 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-17 18:46:30,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: DFS Order used in POR -> LOOP_LOCKSTEP Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional conditional commutativity checking -> COUNTEREXAMPLE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Criterion for conditional commutativity checking -> FORWARD [2024-10-17 18:46:30,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-17 18:46:30,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-17 18:46:30,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-17 18:46:30,830 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-17 18:46:30,830 INFO L274 PluginConnector]: CDTParser initialized [2024-10-17 18:46:30,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2024-10-17 18:46:32,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-17 18:46:32,476 INFO L384 CDTParser]: Found 1 translation units. [2024-10-17 18:46:32,476 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2024-10-17 18:46:32,504 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/c84742e0b/121b8ba86db94e0690854f7a44077f03/FLAGe3de6eba4 [2024-10-17 18:46:32,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/c84742e0b/121b8ba86db94e0690854f7a44077f03 [2024-10-17 18:46:32,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-17 18:46:32,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-17 18:46:32,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-17 18:46:32,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-17 18:46:32,526 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-17 18:46:32,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 06:46:32" (1/1) ... [2024-10-17 18:46:32,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@340380e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:32, skipping insertion in model container [2024-10-17 18:46:32,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 06:46:32" (1/1) ... [2024-10-17 18:46:32,573 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-17 18:46:33,027 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2024-10-17 18:46:33,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-17 18:46:33,086 INFO L200 MainTranslator]: Completed pre-run [2024-10-17 18:46:33,137 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2024-10-17 18:46:33,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-17 18:46:33,216 INFO L204 MainTranslator]: Completed translation [2024-10-17 18:46:33,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:33 WrapperNode [2024-10-17 18:46:33,217 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-17 18:46:33,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-17 18:46:33,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-17 18:46:33,218 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-17 18:46:33,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:33" (1/1) ... [2024-10-17 18:46:33,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:33" (1/1) ... [2024-10-17 18:46:33,288 INFO L138 Inliner]: procedures = 271, calls = 49, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 213 [2024-10-17 18:46:33,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-17 18:46:33,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-17 18:46:33,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-17 18:46:33,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-17 18:46:33,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:33" (1/1) ... [2024-10-17 18:46:33,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:33" (1/1) ... [2024-10-17 18:46:33,315 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:33" (1/1) ... [2024-10-17 18:46:33,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:33" (1/1) ... [2024-10-17 18:46:33,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:33" (1/1) ... [2024-10-17 18:46:33,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:33" (1/1) ... [2024-10-17 18:46:33,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:33" (1/1) ... [2024-10-17 18:46:33,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:33" (1/1) ... [2024-10-17 18:46:33,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-17 18:46:33,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-17 18:46:33,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-17 18:46:33,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-17 18:46:33,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:33" (1/1) ... [2024-10-17 18:46:33,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-17 18:46:33,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:33,393 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) [2024-10-17 18:46:33,395 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 [2024-10-17 18:46:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-17 18:46:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-17 18:46:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-17 18:46:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-17 18:46:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-17 18:46:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-17 18:46:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-17 18:46:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-17 18:46:33,436 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-17 18:46:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-17 18:46:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-17 18:46:33,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-17 18:46:33,438 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-17 18:46:33,574 INFO L238 CfgBuilder]: Building ICFG [2024-10-17 18:46:33,575 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-17 18:46:33,899 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-17 18:46:33,899 INFO L287 CfgBuilder]: Performing block encoding [2024-10-17 18:46:34,116 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-17 18:46:34,116 INFO L314 CfgBuilder]: Removed 23 assume(true) statements. [2024-10-17 18:46:34,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 06:46:34 BoogieIcfgContainer [2024-10-17 18:46:34,117 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-17 18:46:34,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-17 18:46:34,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-17 18:46:34,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-17 18:46:34,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 06:46:32" (1/3) ... [2024-10-17 18:46:34,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a737b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 06:46:34, skipping insertion in model container [2024-10-17 18:46:34,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 06:46:33" (2/3) ... [2024-10-17 18:46:34,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a737b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 06:46:34, skipping insertion in model container [2024-10-17 18:46:34,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 06:46:34" (3/3) ... [2024-10-17 18:46:34,127 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2024-10-17 18:46:34,142 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-17 18:46:34,143 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-17 18:46:34,144 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-17 18:46:34,188 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-17 18:46:34,235 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 18:46:34,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 18:46:34,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:34,238 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) [2024-10-17 18:46:34,239 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 [2024-10-17 18:46:34,335 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 18:46:34,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:34,354 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of1ForFork0 ======== [2024-10-17 18:46:34,362 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40a5f805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=FORWARD, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 18:46:34,363 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 18:46:35,052 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:46:35,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1947151098, now seen corresponding path program 1 times [2024-10-17 18:46:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:35,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029753743] [2024-10-17 18:46:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:35,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-17 18:46:35,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:35,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029753743] [2024-10-17 18:46:35,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029753743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 18:46:35,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 18:46:35,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 18:46:35,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596600888] [2024-10-17 18:46:35,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 18:46:35,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:46:35,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:35,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:46:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:46:35,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:35,375 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:35,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:35,376 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:37,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:37,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-17 18:46:37,856 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:46:37,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:37,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1393481553, now seen corresponding path program 1 times [2024-10-17 18:46:37,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:37,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867381553] [2024-10-17 18:46:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:37,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:46:37,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:37,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867381553] [2024-10-17 18:46:37,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867381553] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:46:37,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78928285] [2024-10-17 18:46:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:37,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:37,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:37,994 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) [2024-10-17 18:46:37,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-17 18:46:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:38,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-17 18:46:38,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:46:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:46:38,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:46:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:46:38,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78928285] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:46:38,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:46:38,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 18:46:38,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108917076] [2024-10-17 18:46:38,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:46:38,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 18:46:38,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:38,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 18:46:38,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-17 18:46:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:38,110 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:38,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:38,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:38,111 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:38,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:38,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-17 18:46:38,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-17 18:46:38,487 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:46:38,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:38,488 INFO L85 PathProgramCache]: Analyzing trace with hash -121528289, now seen corresponding path program 2 times [2024-10-17 18:46:38,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:38,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225846134] [2024-10-17 18:46:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:38,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:46:38,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225846134] [2024-10-17 18:46:38,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225846134] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:46:38,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391502694] [2024-10-17 18:46:38,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 18:46:38,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:38,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:38,630 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) [2024-10-17 18:46:38,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-17 18:46:38,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 18:46:38,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:46:38,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-17 18:46:38,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:46:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:46:38,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:46:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:46:38,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391502694] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:46:38,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:46:38,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-17 18:46:38,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112624480] [2024-10-17 18:46:38,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:46:38,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-17 18:46:38,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:38,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-17 18:46:38,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-17 18:46:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:38,803 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:38,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:38,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:38,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:38,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:46:38,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-17 18:46:39,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:39,129 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:46:39,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:39,130 INFO L85 PathProgramCache]: Analyzing trace with hash -346958305, now seen corresponding path program 3 times [2024-10-17 18:46:39,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:39,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348031251] [2024-10-17 18:46:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:39,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:46:39,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:39,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348031251] [2024-10-17 18:46:39,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348031251] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:46:39,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44172978] [2024-10-17 18:46:39,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-17 18:46:39,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:39,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:39,479 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) [2024-10-17 18:46:39,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-17 18:46:39,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-17 18:46:39,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:46:39,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-17 18:46:39,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:46:39,593 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 7 treesize of output 6 [2024-10-17 18:46:39,661 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:46:39,661 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 [2024-10-17 18:46:39,681 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 15 treesize of output 10 [2024-10-17 18:46:39,733 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 15 treesize of output 10 [2024-10-17 18:46:39,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2024-10-17 18:46:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-17 18:46:39,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:46:43,840 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_140 (Array Int Int)) (|~#a~0.offset| Int) (|t_funThread1of1ForFork0_~i~0#1| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_140) |c_~#a~0.base|) (+ (* |t_funThread1of1ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)) is different from false [2024-10-17 18:46:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2024-10-17 18:46:43,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44172978] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:46:43,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:46:43,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-10-17 18:46:43,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606436139] [2024-10-17 18:46:43,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:46:43,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-17 18:46:43,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:43,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-17 18:46:43,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=95, Unknown=1, NotChecked=20, Total=156 [2024-10-17 18:46:43,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:43,989 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:43,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:43,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:43,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:43,992 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:46:43,992 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:46:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:44,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-17 18:46:44,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:44,990 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:46:45,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-10-17 18:46:45,125 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:46:45,125 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 26 treesize of output 18 [2024-10-17 18:46:45,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1686728544, now seen corresponding path program 1 times [2024-10-17 18:46:45,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:45,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:46:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:45,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:46:45,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-17 18:46:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-17 18:46:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-17 18:46:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:45,308 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:45,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:45,308 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:45,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:45,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:46:45,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:45,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:46:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-17 18:46:45,660 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 18:46:45,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,SelfDestructingSolverStorable5 [2024-10-17 18:46:45,666 INFO L414 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-17 18:46:45,668 INFO L312 ceAbstractionStarter]: Result for error location t_funThread1of1ForFork0 was SAFE (1/2) [2024-10-17 18:46:45,671 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 18:46:45,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 18:46:45,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:45,676 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 18:46:45,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2024-10-17 18:46:45,723 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 18:46:45,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:45,724 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 18:46:45,724 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40a5f805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=FORWARD, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 18:46:45,726 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 18:46:45,935 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:46:45,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:45,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2015966958, now seen corresponding path program 1 times [2024-10-17 18:46:45,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:45,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122852207] [2024-10-17 18:46:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:45,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:46:45,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122852207] [2024-10-17 18:46:45,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122852207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 18:46:45,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 18:46:45,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 18:46:45,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714091990] [2024-10-17 18:46:45,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 18:46:45,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:46:45,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:45,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:46:45,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:46:45,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:45,965 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:45,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:45,965 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:46,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:46,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-17 18:46:46,050 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:46:46,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:46,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1542578883, now seen corresponding path program 1 times [2024-10-17 18:46:46,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:46,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139911892] [2024-10-17 18:46:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:46,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:46:46,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:46,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139911892] [2024-10-17 18:46:46,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139911892] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:46:46,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924444553] [2024-10-17 18:46:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:46,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:46,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:46,086 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:46:46,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-17 18:46:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:46,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-17 18:46:46,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:46:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:46:46,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:46:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:46:46,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924444553] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:46:46,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:46:46,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 18:46:46,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484980303] [2024-10-17 18:46:46,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:46:46,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 18:46:46,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:46,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 18:46:46,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-17 18:46:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:46,199 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:46,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:46,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:46,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:46,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:46,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-17 18:46:46,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:46,430 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:46:46,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:46,430 INFO L85 PathProgramCache]: Analyzing trace with hash 302486067, now seen corresponding path program 2 times [2024-10-17 18:46:46,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:46,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902274318] [2024-10-17 18:46:46,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:46,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:46:46,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:46,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902274318] [2024-10-17 18:46:46,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902274318] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:46:46,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549625144] [2024-10-17 18:46:46,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 18:46:46,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:46,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:46,518 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:46:46,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-17 18:46:46,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 18:46:46,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:46:46,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-17 18:46:46,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:46:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:46:46,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:46:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-17 18:46:46,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549625144] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:46:46,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:46:46,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-17 18:46:46,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875085343] [2024-10-17 18:46:46,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:46:46,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-17 18:46:46,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:46,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-17 18:46:46,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-17 18:46:46,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:46,688 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:46,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:46,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:46,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:46,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:46,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:46:46,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-17 18:46:46,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-17 18:46:46,922 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:46:46,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:46,922 INFO L85 PathProgramCache]: Analyzing trace with hash 287492147, now seen corresponding path program 3 times [2024-10-17 18:46:46,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:46,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390206238] [2024-10-17 18:46:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:46,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:46:46,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 18:46:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:46:46,989 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 18:46:46,989 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 18:46:46,989 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 18:46:46,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-17 18:46:46,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-17 18:46:46,995 INFO L414 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-17 18:46:46,995 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/2) [2024-10-17 18:46:46,996 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 18:46:46,996 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-17 18:46:47,021 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-17 18:46:47,024 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 18:46:47,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 18:46:47,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:47,027 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 18:46:47,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2024-10-17 18:46:47,066 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 18:46:47,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:47,066 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of2ForFork0 ======== [2024-10-17 18:46:47,067 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40a5f805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=FORWARD, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 18:46:47,067 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 18:46:49,329 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:46:49,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:49,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1319844607, now seen corresponding path program 1 times [2024-10-17 18:46:49,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:49,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288115566] [2024-10-17 18:46:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:49,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-17 18:46:49,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:49,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288115566] [2024-10-17 18:46:49,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288115566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 18:46:49,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 18:46:49,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 18:46:49,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326135363] [2024-10-17 18:46:49,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 18:46:49,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:46:49,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:49,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:46:49,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:46:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:49,387 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:49,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:49,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:57,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:57,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-17 18:46:57,011 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:46:57,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:57,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1256534489, now seen corresponding path program 1 times [2024-10-17 18:46:57,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:57,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218730051] [2024-10-17 18:46:57,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:57,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-17 18:46:57,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:57,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218730051] [2024-10-17 18:46:57,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218730051] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:46:57,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919090421] [2024-10-17 18:46:57,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:57,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:57,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:57,069 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:46:57,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-17 18:46:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:57,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-17 18:46:57,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:46:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-17 18:46:57,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:46:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-17 18:46:57,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919090421] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:46:57,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:46:57,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 18:46:57,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643759308] [2024-10-17 18:46:57,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:46:57,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 18:46:57,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:57,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 18:46:57,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-17 18:46:57,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:57,194 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:57,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:57,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:57,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:58,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:58,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-17 18:46:58,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:58,681 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:46:58,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:46:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash 44056486, now seen corresponding path program 2 times [2024-10-17 18:46:58,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:46:58,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028659000] [2024-10-17 18:46:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:46:58,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:46:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:46:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-17 18:46:58,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:46:58,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028659000] [2024-10-17 18:46:58,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028659000] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:46:58,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795574970] [2024-10-17 18:46:58,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 18:46:58,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:46:58,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:46:58,764 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:46:58,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-17 18:46:58,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 18:46:58,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:46:58,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-17 18:46:58,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:46:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-17 18:46:58,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:46:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-17 18:46:58,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795574970] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:46:58,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:46:58,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-17 18:46:58,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966758848] [2024-10-17 18:46:58,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:46:58,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-17 18:46:58,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:46:58,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-17 18:46:58,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-17 18:46:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:58,905 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:46:58,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:46:58,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:58,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:58,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:46:59,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:46:59,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:46:59,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:46:59,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-17 18:47:00,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-17 18:47:00,149 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:47:00,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:47:00,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1071250746, now seen corresponding path program 3 times [2024-10-17 18:47:00,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:47:00,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167200719] [2024-10-17 18:47:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:47:00,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:47:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:47:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:47:00,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:47:00,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167200719] [2024-10-17 18:47:00,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167200719] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:47:00,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224700192] [2024-10-17 18:47:00,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-17 18:47:00,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:47:00,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:47:00,362 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:47:00,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-17 18:47:00,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-17 18:47:00,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:47:00,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-17 18:47:00,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:47:00,464 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 7 treesize of output 6 [2024-10-17 18:47:00,518 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:47:00,519 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 [2024-10-17 18:47:00,535 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 15 treesize of output 10 [2024-10-17 18:47:00,576 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 15 treesize of output 10 [2024-10-17 18:47:00,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2024-10-17 18:47:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-17 18:47:00,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:47:06,674 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_460 (Array Int Int)) (|~#a~0.offset| Int) (|t_funThread1of2ForFork0_~i~0#1| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_460) |c_~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)) is different from false [2024-10-17 18:47:06,781 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 2 not checked. [2024-10-17 18:47:06,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224700192] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:47:06,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:47:06,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-10-17 18:47:06,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815621286] [2024-10-17 18:47:06,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:47:06,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-17 18:47:06,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:47:06,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-17 18:47:06,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=94, Unknown=2, NotChecked=20, Total=156 [2024-10-17 18:47:06,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:47:06,782 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:47:06,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:47:06,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:06,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:47:06,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:47:06,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:47:09,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:09,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:47:09,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:47:09,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 18:47:09,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-17 18:47:09,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:47:09,790 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:47:09,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-10-17 18:47:09,875 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:47:09,875 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 26 treesize of output 18 [2024-10-17 18:47:09,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1464423347, now seen corresponding path program 1 times [2024-10-17 18:47:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:47:09,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:47:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:47:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:47:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:47:09,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:47:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:47:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:47:10,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:47:10,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:47:10,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:47:10,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:47:10,067 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:47:10,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:47:10,067 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:10,067 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:47:10,067 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:47:10,067 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 18:47:10,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:47:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:47:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:47:11,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 18:47:11,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:11,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,SelfDestructingSolverStorable15 [2024-10-17 18:47:11,920 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:47:11,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:47:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash 193248223, now seen corresponding path program 1 times [2024-10-17 18:47:11,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:47:11,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244210187] [2024-10-17 18:47:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:47:11,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:47:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:47:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 18:47:45,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:47:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244210187] [2024-10-17 18:47:45,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244210187] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:47:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387030988] [2024-10-17 18:47:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:47:45,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:47:45,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:47:45,719 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:47:45,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-17 18:47:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:47:45,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-17 18:47:45,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:47:45,835 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 7 treesize of output 6 [2024-10-17 18:47:45,917 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:47:45,918 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 [2024-10-17 18:47:45,953 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 15 treesize of output 10 [2024-10-17 18:47:45,998 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 16 treesize of output 12 [2024-10-17 18:47:46,051 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 15 treesize of output 10 [2024-10-17 18:47:46,133 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:47:46,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 11 [2024-10-17 18:47:46,187 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 15 treesize of output 10 [2024-10-17 18:47:46,227 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 0 case distinctions, treesize of input 32 treesize of output 25 [2024-10-17 18:47:46,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 49 [2024-10-17 18:47:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:47:46,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:47:46,459 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_621 (Array Int Int))) (= (select (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_621) |c_~#a~0.base|)) (.cse1 (+ |c_~#a~0.offset| (* |c_t_funThread2of2ForFork0_~i~0#1| 28)))) (store .cse0 .cse1 (+ (select .cse0 .cse1) 1))) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|)) 0)) is different from false [2024-10-17 18:47:46,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 16 [2024-10-17 18:47:46,680 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|))) (and (or (forall ((|v_t_funThread2of2ForFork0_~i~0#1_20| Int) (v_ArrVal_621 (Array Int Int))) (= (select (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_621) |c_~#a~0.base|)) (.cse1 (+ (* |v_t_funThread2of2ForFork0_~i~0#1_20| 28) |c_~#a~0.offset|))) (store .cse0 .cse1 (+ (select .cse0 .cse1) 1))) .cse2) 0)) (= |c_~#a~0.base| |c_t_funThread1of2ForFork0_~p~0#1.base|)) (forall ((|v_t_funThread2of2ForFork0_~i~0#1_20| Int) (v_ArrVal_621 (Array Int Int))) (let ((.cse3 (+ (* |v_t_funThread2of2ForFork0_~i~0#1_20| 28) |c_~#a~0.offset|))) (or (= .cse3 |c_t_funThread1of2ForFork0_~p~0#1.offset|) (= (select (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_621) |c_~#a~0.base|))) (store .cse4 .cse3 (+ (select .cse4 .cse3) 1))) .cse2) 0)))))) is different from false [2024-10-17 18:47:48,691 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_t_funThread2of2ForFork0_~i~0#1_20| Int) (|~#a~0.offset| Int) (v_ArrVal_621 (Array Int Int)) (|v_t_funThread1of2ForFork0_~i~0#1_20| Int)) (or (= |v_t_funThread2of2ForFork0_~i~0#1_20| |v_t_funThread1of2ForFork0_~i~0#1_20|) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_621) |c_~#a~0.base|) (+ (* |v_t_funThread1of2ForFork0_~i~0#1_20| 28) |~#a~0.offset|)) 0))) is different from false [2024-10-17 18:47:50,696 WARN L851 $PredicateComparison]: unable to prove that (forall ((|~#a~0.offset| Int) (v_ArrVal_621 (Array Int Int)) (|v_t_funThread1of2ForFork0_~i~0#1_20| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_621) |c_~#a~0.base|) (+ (* |v_t_funThread1of2ForFork0_~i~0#1_20| 28) |~#a~0.offset|)) 0)) is different from false [2024-10-17 18:47:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 6 not checked. [2024-10-17 18:47:50,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387030988] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:47:50,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:47:50,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10, 11] total 38 [2024-10-17 18:47:50,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848420660] [2024-10-17 18:47:50,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:47:50,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-17 18:47:50,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:47:50,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-17 18:47:50,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1033, Unknown=4, NotChecked=276, Total=1482 [2024-10-17 18:47:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:47:50,830 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:47:50,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 38 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:47:50,830 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:50,830 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:47:50,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:47:50,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 18:47:50,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:50,831 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:47:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:47:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:47:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 18:47:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-17 18:47:55,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-17 18:47:55,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-17 18:47:55,975 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:47:56,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-10-17 18:47:56,093 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:47:56,093 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 26 treesize of output 18 [2024-10-17 18:47:56,111 INFO L85 PathProgramCache]: Analyzing trace with hash 123017057, now seen corresponding path program 1 times [2024-10-17 18:47:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:47:56,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:47:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:47:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:47:56,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:47:56,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:47:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:47:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:47:56,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-17 18:47:56,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-17 18:47:56,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-17 18:47:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:47:56,264 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:47:56,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:47:56,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:56,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:47:56,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:47:56,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 18:47:56,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:56,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2024-10-17 18:47:56,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:47:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:47:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:47:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 18:47:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-17 18:47:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:47:57,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,SelfDestructingSolverStorable17 [2024-10-17 18:47:57,627 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:47:57,683 INFO L349 Elim1Store]: treesize reduction 9, result has 30.8 percent of original size [2024-10-17 18:47:57,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 634 treesize of output 584 [2024-10-17 18:47:59,728 INFO L85 PathProgramCache]: Analyzing trace with hash -355867472, now seen corresponding path program 1 times [2024-10-17 18:47:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:47:59,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:47:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:47:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:47:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:47:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:47:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:47:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-17 18:47:59,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-17 18:47:59,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-17 18:47:59,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-17 18:47:59,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:47:59,895 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:47:59,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:47:59,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:59,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:47:59,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:47:59,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 18:47:59,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:47:59,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2024-10-17 18:47:59,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:47:59,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:00,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:48:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:48:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 18:48:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-17 18:48:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:48:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-17 18:48:00,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,SelfDestructingSolverStorable20 [2024-10-17 18:48:00,746 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:48:00,813 INFO L349 Elim1Store]: treesize reduction 9, result has 30.8 percent of original size [2024-10-17 18:48:00,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 340 treesize of output 314 [2024-10-17 18:48:00,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1696329196, now seen corresponding path program 1 times [2024-10-17 18:48:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:00,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:48:00,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 18:48:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:48:00,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash 761274254, now seen corresponding path program 1 times [2024-10-17 18:48:00,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:48:00,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669463430] [2024-10-17 18:48:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:00,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:48:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-17 18:48:01,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:48:01,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669463430] [2024-10-17 18:48:01,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669463430] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:48:01,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800318907] [2024-10-17 18:48:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:01,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:48:01,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:48:01,276 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:48:01,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-17 18:48:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:48:01,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-17 18:48:01,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:48:01,406 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 7 treesize of output 6 [2024-10-17 18:48:01,458 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:48:01,458 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 [2024-10-17 18:48:01,473 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 15 treesize of output 10 [2024-10-17 18:48:01,492 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 15 treesize of output 10 [2024-10-17 18:48:01,530 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 15 treesize of output 10 [2024-10-17 18:48:01,607 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 0 case distinctions, treesize of input 32 treesize of output 25 [2024-10-17 18:48:01,636 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 0 case distinctions, treesize of input 48 treesize of output 41 [2024-10-17 18:48:01,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2024-10-17 18:48:01,694 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-17 18:48:01,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:48:07,756 WARN L851 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_~i~0#1| Int)) (= (select (let ((.cse0 (select |c_#memory_int| |c_~#a~0.base|)) (.cse1 (+ |c_~#a~0.offset| (* |c_t_funThread2of2ForFork0_~i~0#1| 28)))) (store .cse0 .cse1 (+ (- 1) (select .cse0 .cse1)))) (+ |c_~#a~0.offset| (* |t_funThread1of2ForFork0_~i~0#1| 28))) 0)) is different from false [2024-10-17 18:48:13,821 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_939 (Array Int Int)) (|~#a~0.offset| Int) (|t_funThread2of2ForFork0_~i~0#1| Int) (|t_funThread1of2ForFork0_~i~0#1| Int)) (= (select (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_939) |c_~#a~0.base|)) (.cse1 (+ (* 28 |t_funThread2of2ForFork0_~i~0#1|) |~#a~0.offset|))) (store .cse0 .cse1 (select .cse0 .cse1))) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)) is different from false [2024-10-17 18:48:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 2 not checked. [2024-10-17 18:48:13,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800318907] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:48:13,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:48:13,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 16 [2024-10-17 18:48:13,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797221694] [2024-10-17 18:48:13,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:48:13,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-17 18:48:13,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:48:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-17 18:48:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=160, Unknown=3, NotChecked=54, Total=272 [2024-10-17 18:48:13,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:13,956 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:48:13,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:48:13,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:13,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:48:13,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:48:13,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 18:48:13,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:13,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2024-10-17 18:48:13,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:48:13,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-17 18:48:13,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:48:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:48:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 18:48:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-17 18:48:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:48:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-17 18:48:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-17 18:48:14,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-17 18:48:14,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21,SelfDestructingSolverStorable22 [2024-10-17 18:48:14,948 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:48:15,021 INFO L349 Elim1Store]: treesize reduction 11, result has 26.7 percent of original size [2024-10-17 18:48:15,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 761 treesize of output 653 [2024-10-17 18:48:15,567 INFO L85 PathProgramCache]: Analyzing trace with hash 435430199, now seen corresponding path program 1 times [2024-10-17 18:48:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:15,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:48:15,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 18:48:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:48:15,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 312 treesize of output 288 [2024-10-17 18:48:15,785 INFO L85 PathProgramCache]: Analyzing trace with hash 308869062, now seen corresponding path program 1 times [2024-10-17 18:48:15,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:15,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:48:15,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 18:48:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:48:15,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:15,822 INFO L85 PathProgramCache]: Analyzing trace with hash -222163506, now seen corresponding path program 2 times [2024-10-17 18:48:15,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:48:15,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641263136] [2024-10-17 18:48:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:15,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:48:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-17 18:48:16,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:48:16,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641263136] [2024-10-17 18:48:16,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641263136] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:48:16,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801671584] [2024-10-17 18:48:16,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 18:48:16,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:48:16,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:48:16,292 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:48:16,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-17 18:48:16,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 18:48:16,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:48:16,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-17 18:48:16,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:48:16,456 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 7 treesize of output 6 [2024-10-17 18:48:16,540 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-17 18:48:16,541 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 [2024-10-17 18:48:16,565 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 15 treesize of output 10 [2024-10-17 18:48:16,593 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 15 treesize of output 10 [2024-10-17 18:48:16,663 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 0 case distinctions, treesize of input 32 treesize of output 25 [2024-10-17 18:48:16,724 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 0 case distinctions, treesize of input 48 treesize of output 41 [2024-10-17 18:48:16,744 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 15 treesize of output 10 [2024-10-17 18:48:16,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2024-10-17 18:48:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-17 18:48:16,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:48:20,911 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1126 (Array Int Int)) (|t_funThread1of2ForFork0_~i~0#1| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1126) |c_~#a~0.base|) (+ |c_~#a~0.offset| (* |t_funThread1of2ForFork0_~i~0#1| 28))) 0)) is different from false [2024-10-17 18:48:20,919 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1126 (Array Int Int)) (|t_funThread1of2ForFork0_~i~0#1| Int)) (= (select (select (store (store |c_#memory_int| |c_~#a~0.base| (let ((.cse0 (select |c_#memory_int| |c_~#a~0.base|)) (.cse1 (+ |c_~#a~0.offset| (* |c_t_funThread2of2ForFork0_~i~0#1| 28)))) (store .cse0 .cse1 (+ (- 1) (select .cse0 .cse1))))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1126) |c_~#a~0.base|) (+ |c_~#a~0.offset| (* |t_funThread1of2ForFork0_~i~0#1| 28))) 0)) is different from false [2024-10-17 18:48:20,941 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1126 (Array Int Int)) (|~#a~0.offset| Int) (|t_funThread2of2ForFork0_~i~0#1| Int) (|t_funThread1of2ForFork0_~i~0#1| Int)) (= (select (select (store (store |c_#memory_int| |c_~#a~0.base| (let ((.cse0 (select |c_#memory_int| |c_~#a~0.base|)) (.cse1 (+ (* 28 |t_funThread2of2ForFork0_~i~0#1|) |~#a~0.offset|))) (store .cse0 .cse1 (select .cse0 .cse1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1126) |c_~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)) is different from false [2024-10-17 18:48:22,973 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1126 (Array Int Int)) (v_ArrVal_1123 (Array Int Int)) (|~#a~0.offset| Int) (|t_funThread2of2ForFork0_~i~0#1| Int) (|t_funThread1of2ForFork0_~i~0#1| Int)) (= (select (select (store (store |c_#memory_int| |c_~#a~0.base| (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1123) |c_~#a~0.base|)) (.cse1 (+ (* 28 |t_funThread2of2ForFork0_~i~0#1|) |~#a~0.offset|))) (store .cse0 .cse1 (select .cse0 .cse1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1126) |c_~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)) is different from false [2024-10-17 18:48:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 6 not checked. [2024-10-17 18:48:23,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801671584] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:48:23,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:48:23,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 18 [2024-10-17 18:48:23,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920991583] [2024-10-17 18:48:23,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:48:23,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-17 18:48:23,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:48:23,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-17 18:48:23,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=164, Unknown=5, NotChecked=116, Total=342 [2024-10-17 18:48:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:23,086 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:48:23,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 18 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:48:23,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:23,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:48:23,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:48:23,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-10-17 18:48:23,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:23,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2024-10-17 18:48:23,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:48:23,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-10-17 18:48:23,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-10-17 18:48:23,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:48:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:48:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-17 18:48:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-17 18:48:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 18:48:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-17 18:48:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-17 18:48:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-17 18:48:24,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 18:48:24,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-17 18:48:24,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24,SelfDestructingSolverStorable25 [2024-10-17 18:48:24,219 INFO L414 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-17 18:48:24,220 INFO L312 ceAbstractionStarter]: Result for error location t_funThread1of2ForFork0 was SAFE (1/3) [2024-10-17 18:48:24,222 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 18:48:24,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 18:48:24,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:48:24,224 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 18:48:24,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (16)] Waiting until timeout for monitored process [2024-10-17 18:48:24,260 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 18:48:24,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:24,261 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 18:48:24,261 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40a5f805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=FORWARD, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 18:48:24,261 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 18:48:24,639 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:48:24,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:24,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1407812460, now seen corresponding path program 1 times [2024-10-17 18:48:24,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:48:24,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113798338] [2024-10-17 18:48:24,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:24,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:48:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:48:24,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:48:24,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113798338] [2024-10-17 18:48:24,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113798338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 18:48:24,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 18:48:24,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 18:48:24,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076285781] [2024-10-17 18:48:24,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 18:48:24,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:48:24,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:48:24,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:48:24,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:48:24,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:24,665 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:48:24,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:48:24,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:24,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:24,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-17 18:48:24,935 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:48:24,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:24,935 INFO L85 PathProgramCache]: Analyzing trace with hash 167791426, now seen corresponding path program 1 times [2024-10-17 18:48:24,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:48:24,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115591581] [2024-10-17 18:48:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:24,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:48:24,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:48:24,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:48:24,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115591581] [2024-10-17 18:48:24,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115591581] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:48:24,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750567870] [2024-10-17 18:48:24,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:24,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:48:24,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:48:24,971 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:48:24,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-17 18:48:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:48:25,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-17 18:48:25,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:48:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:48:25,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:48:25,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:48:25,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750567870] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:48:25,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:48:25,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 18:48:25,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323018913] [2024-10-17 18:48:25,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:48:25,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 18:48:25,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:48:25,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 18:48:25,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-17 18:48:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:25,124 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:48:25,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:48:25,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:25,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:25,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:25,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:48:25,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-17 18:48:25,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-17 18:48:25,369 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:48:25,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:25,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1235678997, now seen corresponding path program 2 times [2024-10-17 18:48:25,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:48:25,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567149149] [2024-10-17 18:48:25,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:25,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:48:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:48:25,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:48:25,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567149149] [2024-10-17 18:48:25,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567149149] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:48:25,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467450461] [2024-10-17 18:48:25,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 18:48:25,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:48:25,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:48:25,438 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:48:25,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-17 18:48:25,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 18:48:25,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:48:25,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-17 18:48:25,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:48:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:48:25,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:48:25,656 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-17 18:48:25,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467450461] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:48:25,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:48:25,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-17 18:48:25,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411371785] [2024-10-17 18:48:25,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:48:25,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-17 18:48:25,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:48:25,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-17 18:48:25,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-17 18:48:25,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:25,658 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:48:25,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:48:25,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:25,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:48:25,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:25,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:48:25,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:48:25,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-17 18:48:25,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-17 18:48:25,922 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:48:25,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:25,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1020893173, now seen corresponding path program 3 times [2024-10-17 18:48:25,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:48:25,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953727471] [2024-10-17 18:48:25,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:25,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:48:25,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 18:48:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:48:25,964 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 18:48:25,964 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 18:48:25,964 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 18:48:25,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-17 18:48:25,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-17 18:48:25,969 INFO L414 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-17 18:48:25,969 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (2/3) [2024-10-17 18:48:25,969 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 18:48:25,969 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-17 18:48:25,997 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-17 18:48:26,000 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 18:48:26,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 18:48:26,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:48:26,002 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 18:48:26,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (19)] Waiting until timeout for monitored process [2024-10-17 18:48:26,044 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 18:48:26,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:26,044 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-17 18:48:26,045 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40a5f805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=FORWARD, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 18:48:26,045 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-17 18:48:26,745 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:48:26,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:26,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1392493129, now seen corresponding path program 1 times [2024-10-17 18:48:26,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:48:26,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111670952] [2024-10-17 18:48:26,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:26,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:48:26,773 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:48:26,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:48:26,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111670952] [2024-10-17 18:48:26,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111670952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 18:48:26,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 18:48:26,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 18:48:26,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655337621] [2024-10-17 18:48:26,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 18:48:26,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:48:26,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:48:26,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:48:26,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:48:26,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:26,775 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:48:26,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:48:26,775 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:27,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-17 18:48:27,572 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:48:27,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:27,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1556856735, now seen corresponding path program 1 times [2024-10-17 18:48:27,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:48:27,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693904998] [2024-10-17 18:48:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:27,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:48:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:48:27,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:48:27,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693904998] [2024-10-17 18:48:27,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693904998] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:48:27,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26900055] [2024-10-17 18:48:27,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:27,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:48:27,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:48:27,612 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:48:27,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-17 18:48:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:48:27,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-17 18:48:27,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:48:27,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:48:27,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:48:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:48:27,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26900055] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:48:27,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:48:27,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-17 18:48:27,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484832359] [2024-10-17 18:48:27,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:48:27,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-17 18:48:27,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:48:27,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-17 18:48:27,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-17 18:48:27,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:27,775 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:48:27,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:48:27,776 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:27,776 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:27,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:27,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:48:27,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-17 18:48:28,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:48:28,019 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:48:28,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1632227645, now seen corresponding path program 2 times [2024-10-17 18:48:28,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:48:28,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81210892] [2024-10-17 18:48:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:28,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:48:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:48:28,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:48:28,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81210892] [2024-10-17 18:48:28,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81210892] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-17 18:48:28,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229844805] [2024-10-17 18:48:28,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-17 18:48:28,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-17 18:48:28,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:48:28,097 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-17 18:48:28,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-17 18:48:28,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-17 18:48:28,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-17 18:48:28,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-17 18:48:28,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-17 18:48:28,263 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:48:28,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-17 18:48:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-17 18:48:28,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229844805] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-17 18:48:28,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-17 18:48:28,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-17 18:48:28,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801611276] [2024-10-17 18:48:28,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-17 18:48:28,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-17 18:48:28,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:48:28,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-17 18:48:28,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-17 18:48:28,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:28,335 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:48:28,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:48:28,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:28,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:48:28,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 18:48:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-17 18:48:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-17 18:48:28,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-17 18:48:28,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-10-17 18:48:28,624 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-17 18:48:28,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1032667459, now seen corresponding path program 3 times [2024-10-17 18:48:28,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:48:28,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467409832] [2024-10-17 18:48:28,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:28,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:48:28,718 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 18:48:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 18:48:28,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 18:48:28,741 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 18:48:28,741 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-17 18:48:28,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-17 18:48:28,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-17 18:48:28,743 INFO L414 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-17 18:48:28,743 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN (1/4) [2024-10-17 18:48:28,744 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-17 18:48:28,744 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-17 18:48:28,771 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-17 18:48:28,773 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 18:48:28,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 18:48:28,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 18:48:28,775 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-17 18:48:28,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (22)] Waiting until timeout for monitored process [2024-10-17 18:48:28,816 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 18:48:28,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:28,816 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread4of4ForFork0 ======== [2024-10-17 18:48:28,817 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40a5f805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=FORWARD, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 18:48:28,817 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 18:48:30,107 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 18:48:30,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 18:48:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash 516806937, now seen corresponding path program 1 times [2024-10-17 18:48:30,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 18:48:30,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981960249] [2024-10-17 18:48:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 18:48:30,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 18:48:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 18:48:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-17 18:48:30,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 18:48:30,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981960249] [2024-10-17 18:48:30,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981960249] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 18:48:30,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 18:48:30,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 18:48:30,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943441772] [2024-10-17 18:48:30,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 18:48:30,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 18:48:30,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 18:48:30,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 18:48:30,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 18:48:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 18:48:30,146 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 18:48:30,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-17 18:48:30,146 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.