./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking IA --traceabstraction.criterion.for.conditional.commutativity.checking DEFAULT -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/pthread-ext/36_stack_cas_p0_vs_concur.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking IA --traceabstraction.criterion.for.conditional.commutativity.checking DEFAULT -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 [2024-10-18 07:14:49,426 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-18 07:14:49,497 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-18 07:14:49,503 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-18 07:14:49,504 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-18 07:14:49,531 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-18 07:14:49,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-18 07:14:49,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-18 07:14:49,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-18 07:14:49,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-18 07:14:49,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-18 07:14:49,538 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-18 07:14:49,538 INFO L153 SettingsManager]: * Use SBE=true [2024-10-18 07:14:49,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-18 07:14:49,538 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-18 07:14:49,539 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-18 07:14:49,539 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-18 07:14:49,539 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-18 07:14:49,539 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-18 07:14:49,539 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-18 07:14:49,540 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-18 07:14:49,541 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-18 07:14:49,542 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-18 07:14:49,542 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-18 07:14:49,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-18 07:14:49,542 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-18 07:14:49,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-18 07:14:49,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-18 07:14:49,543 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-18 07:14:49,543 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-18 07:14:49,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-18 07:14:49,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-18 07:14:49,544 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-18 07:14:49,544 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-18 07:14:49,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-18 07:14:49,544 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-18 07:14:49,544 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-18 07:14:49,544 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-18 07:14:49,545 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-18 07:14:49,545 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-18 07:14:49,545 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-18 07:14:49,547 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: DFS Order used in POR -> LOOP_LOCKSTEP Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional conditional commutativity checking -> IA Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Criterion for conditional commutativity checking -> DEFAULT [2024-10-18 07:14:49,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-18 07:14:49,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-18 07:14:49,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-18 07:14:49,816 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-18 07:14:49,817 INFO L274 PluginConnector]: CDTParser initialized [2024-10-18 07:14:49,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-10-18 07:14:51,273 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-18 07:14:51,486 INFO L384 CDTParser]: Found 1 translation units. [2024-10-18 07:14:51,487 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-10-18 07:14:51,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/a4a91af01/5710d675c7514246a9f5201cbb045ab9/FLAG4f8e45704 [2024-10-18 07:14:51,511 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/a4a91af01/5710d675c7514246a9f5201cbb045ab9 [2024-10-18 07:14:51,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-18 07:14:51,515 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-18 07:14:51,517 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-18 07:14:51,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-18 07:14:51,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-18 07:14:51,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.10 07:14:51" (1/1) ... [2024-10-18 07:14:51,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eaff269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:51, skipping insertion in model container [2024-10-18 07:14:51,524 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.10 07:14:51" (1/1) ... [2024-10-18 07:14:51,581 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-18 07:14:51,907 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30869,30882] [2024-10-18 07:14:51,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-18 07:14:51,923 INFO L200 MainTranslator]: Completed pre-run [2024-10-18 07:14:51,977 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30869,30882] [2024-10-18 07:14:51,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-18 07:14:52,016 INFO L204 MainTranslator]: Completed translation [2024-10-18 07:14:52,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:52 WrapperNode [2024-10-18 07:14:52,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-18 07:14:52,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-18 07:14:52,018 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-18 07:14:52,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-18 07:14:52,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:52" (1/1) ... [2024-10-18 07:14:52,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:52" (1/1) ... [2024-10-18 07:14:52,058 INFO L138 Inliner]: procedures = 172, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 103 [2024-10-18 07:14:52,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-18 07:14:52,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-18 07:14:52,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-18 07:14:52,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-18 07:14:52,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:52" (1/1) ... [2024-10-18 07:14:52,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:52" (1/1) ... [2024-10-18 07:14:52,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:52" (1/1) ... [2024-10-18 07:14:52,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:52" (1/1) ... [2024-10-18 07:14:52,080 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:52" (1/1) ... [2024-10-18 07:14:52,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:52" (1/1) ... [2024-10-18 07:14:52,093 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:52" (1/1) ... [2024-10-18 07:14:52,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:52" (1/1) ... [2024-10-18 07:14:52,097 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-18 07:14:52,097 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-18 07:14:52,098 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-18 07:14:52,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-18 07:14:52,098 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:52" (1/1) ... [2024-10-18 07:14:52,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-18 07:14:52,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 07:14:52,140 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) [2024-10-18 07:14:52,142 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 [2024-10-18 07:14:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-18 07:14:52,191 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-18 07:14:52,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-18 07:14:52,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-18 07:14:52,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-18 07:14:52,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-18 07:14:52,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-18 07:14:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-18 07:14:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-18 07:14:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-18 07:14:52,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-18 07:14:52,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-18 07:14:52,195 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-18 07:14:52,341 INFO L238 CfgBuilder]: Building ICFG [2024-10-18 07:14:52,343 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-18 07:14:52,507 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-18 07:14:52,507 INFO L287 CfgBuilder]: Performing block encoding [2024-10-18 07:14:52,646 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-18 07:14:52,646 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-18 07:14:52,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.10 07:14:52 BoogieIcfgContainer [2024-10-18 07:14:52,647 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-18 07:14:52,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-18 07:14:52,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-18 07:14:52,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-18 07:14:52,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.10 07:14:51" (1/3) ... [2024-10-18 07:14:52,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5842a0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.10 07:14:52, skipping insertion in model container [2024-10-18 07:14:52,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.10 07:14:52" (2/3) ... [2024-10-18 07:14:52,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5842a0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.10 07:14:52, skipping insertion in model container [2024-10-18 07:14:52,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.10 07:14:52" (3/3) ... [2024-10-18 07:14:52,654 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2024-10-18 07:14:52,666 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-18 07:14:52,666 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-18 07:14:52,666 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-18 07:14:52,699 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-18 07:14:52,743 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-18 07:14:52,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-18 07:14:52,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 07:14:52,748 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) [2024-10-18 07:14:52,749 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 [2024-10-18 07:14:52,861 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-18 07:14:52,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 07:14:52,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2024-10-18 07:14:52,890 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;@1dcbab5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=IA, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-18 07:14:52,890 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-18 07:14:53,496 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 07:14:53,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 07:14:53,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1639139020, now seen corresponding path program 1 times [2024-10-18 07:14:53,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 07:14:53,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351053129] [2024-10-18 07:14:53,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:14:53,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:14:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:14:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 07:14:54,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 07:14:54,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351053129] [2024-10-18 07:14:54,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351053129] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 07:14:54,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802990137] [2024-10-18 07:14:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:14:54,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 07:14:54,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 07:14:54,352 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) [2024-10-18 07:14:54,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-18 07:14:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:14:54,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-18 07:14:54,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 07:14:54,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-18 07:14:54,707 INFO L349 Elim1Store]: treesize reduction 70, result has 17.6 percent of original size [2024-10-18 07:14:54,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 25 [2024-10-18 07:14:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 07:14:54,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 07:14:55,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-18 07:14:55,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2024-10-18 07:14:55,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-18 07:14:55,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2024-10-18 07:14:55,158 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 70 treesize of output 58 [2024-10-18 07:14:55,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-10-18 07:14:55,171 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 29 treesize of output 21 [2024-10-18 07:14:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 07:14:55,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802990137] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 07:14:55,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 07:14:55,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 17 [2024-10-18 07:14:55,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533464636] [2024-10-18 07:14:55,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 07:14:55,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-18 07:14:55,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 07:14:55,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-18 07:14:55,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=286, Unknown=2, NotChecked=0, Total=342 [2024-10-18 07:14:55,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 07:14:55,253 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 07:14:55,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 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) [2024-10-18 07:14:55,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 07:14:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-18 07:14:55,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-18 07:14:56,096 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,SelfDestructingSolverStorable0 [2024-10-18 07:14:56,096 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 07:14:56,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 07:14:56,097 INFO L85 PathProgramCache]: Analyzing trace with hash 922760699, now seen corresponding path program 1 times [2024-10-18 07:14:56,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 07:14:56,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287209454] [2024-10-18 07:14:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:14:56,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:14:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:14:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-18 07:14:56,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 07:14:56,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287209454] [2024-10-18 07:14:56,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287209454] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 07:14:56,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020526462] [2024-10-18 07:14:56,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:14:56,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 07:14:56,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 07:14:56,409 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) [2024-10-18 07:14:56,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-18 07:14:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:14:56,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-18 07:14:56,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 07:14:56,585 INFO L349 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2024-10-18 07:14:56,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 72 [2024-10-18 07:14:56,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2024-10-18 07:14:56,604 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:14:56,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-10-18 07:14:56,621 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 20 treesize of output 9 [2024-10-18 07:14:56,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-10-18 07:14:56,636 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 15 treesize of output 7 [2024-10-18 07:14:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-18 07:14:56,647 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-18 07:14:56,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020526462] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-18 07:14:56,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-18 07:14:56,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-10-18 07:14:56,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130040559] [2024-10-18 07:14:56,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 07:14:56,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-18 07:14:56,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 07:14:56,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-18 07:14:56,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-18 07:14:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 07:14:56,653 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 07:14:56,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2024-10-18 07:14:56,653 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2024-10-18 07:14:56,653 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 07:14:57,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-18 07:14:57,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-18 07:14:57,143 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-18 07:14:57,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-18 07:14:57,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 07:14:57,351 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-18 07:14:57,353 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (1/2) [2024-10-18 07:14:57,356 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-18 07:14:57,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-18 07:14:57,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 07:14:57,358 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-18 07:14:57,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2024-10-18 07:14:57,397 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-18 07:14:57,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 07:14:57,398 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-18 07:14:57,398 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;@1dcbab5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=IA, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-18 07:14:57,398 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-18 07:14:57,696 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-18 07:14:57,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 07:14:57,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1663913868, now seen corresponding path program 1 times [2024-10-18 07:14:57,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 07:14:57,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319915446] [2024-10-18 07:14:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:14:57,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:14:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 07:14:57,712 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-18 07:14:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 07:14:57,739 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-18 07:14:57,740 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-18 07:14:57,740 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-18 07:14:57,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-18 07:14:57,746 INFO L414 BasicCegarLoop]: Path program histogram: [1] [2024-10-18 07:14:57,746 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/2) [2024-10-18 07:14:57,747 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-18 07:14:57,747 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-18 07:14:57,768 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-18 07:14:57,769 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-18 07:14:57,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-18 07:14:57,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 07:14:57,772 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) [2024-10-18 07:14:57,773 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 [2024-10-18 07:14:57,817 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-18 07:14:57,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 07:14:57,818 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-18 07:14:57,818 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;@1dcbab5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=IA, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-18 07:14:57,819 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-18 07:14:59,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-18 07:14:59,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 07:14:59,516 INFO L85 PathProgramCache]: Analyzing trace with hash -517477166, now seen corresponding path program 1 times [2024-10-18 07:14:59,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 07:14:59,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178555319] [2024-10-18 07:14:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:14:59,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:14:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:14:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 07:14:59,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 07:14:59,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178555319] [2024-10-18 07:14:59,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178555319] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 07:14:59,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755077947] [2024-10-18 07:14:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:14:59,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 07:14:59,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 07:14:59,852 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) [2024-10-18 07:14:59,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-18 07:14:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:14:59,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-18 07:14:59,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 07:14:59,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-18 07:15:00,104 INFO L349 Elim1Store]: treesize reduction 70, result has 17.6 percent of original size [2024-10-18 07:15:00,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 25 [2024-10-18 07:15:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 07:15:00,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 07:15:00,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-18 07:15:00,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2024-10-18 07:15:00,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-18 07:15:00,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2024-10-18 07:15:00,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-18 07:15:00,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 480 treesize of output 490 [2024-10-18 07:15:00,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 143 [2024-10-18 07:15:00,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2024-10-18 07:15:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 07:15:00,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755077947] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 07:15:00,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 07:15:00,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 17 [2024-10-18 07:15:00,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354575890] [2024-10-18 07:15:00,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 07:15:00,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-18 07:15:00,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 07:15:00,860 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-18 07:15:00,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 112 [2024-10-18 07:15:00,898 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:00,899 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:00,901 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:00,902 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:00,911 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-10-18 07:15:00,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4553 treesize of output 1 [2024-10-18 07:15:00,915 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:00,916 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:00,917 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:00,917 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:00,923 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-18 07:15:00,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2024-10-18 07:15:03,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1637898230, now seen corresponding path program 1 times [2024-10-18 07:15:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:15:03,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:15:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 07:15:03,075 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-18 07:15:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 07:15:03,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-18 07:15:03,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=249, Unknown=2, NotChecked=0, Total=306 [2024-10-18 07:15:03,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 07:15:03,096 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 07:15:03,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-18 07:15:03,096 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 07:15:03,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-18 07:15:03,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-18 07:15:03,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,SelfDestructingSolverStorable3,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 07:15:03,817 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-18 07:15:03,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 07:15:03,817 INFO L85 PathProgramCache]: Analyzing trace with hash -488848015, now seen corresponding path program 1 times [2024-10-18 07:15:03,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 07:15:03,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136198518] [2024-10-18 07:15:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:15:03,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:15:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 07:15:03,846 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-18 07:15:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 07:15:03,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-18 07:15:03,882 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-18 07:15:03,882 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-10-18 07:15:03,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-18 07:15:03,886 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-18 07:15:03,886 INFO L312 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/3) [2024-10-18 07:15:03,886 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-18 07:15:03,886 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-18 07:15:03,914 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-18 07:15:03,918 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-18 07:15:03,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-18 07:15:03,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 07:15:03,921 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-18 07:15:03,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2024-10-18 07:15:03,968 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-18 07:15:03,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 07:15:03,970 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork0 ======== [2024-10-18 07:15:03,970 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;@1dcbab5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=IA, mConComCheckerCriterion=DEFAULT, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-18 07:15:03,970 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-18 07:15:07,179 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 07:15:07,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 07:15:07,179 INFO L85 PathProgramCache]: Analyzing trace with hash -921853997, now seen corresponding path program 1 times [2024-10-18 07:15:07,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 07:15:07,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779502745] [2024-10-18 07:15:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:15:07,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:15:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:15:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-18 07:15:07,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 07:15:07,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779502745] [2024-10-18 07:15:07,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779502745] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 07:15:07,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606488599] [2024-10-18 07:15:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:15:07,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 07:15:07,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 07:15:07,616 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-18 07:15:07,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-18 07:15:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:15:07,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-18 07:15:07,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 07:15:07,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-18 07:15:08,046 INFO L349 Elim1Store]: treesize reduction 58, result has 31.8 percent of original size [2024-10-18 07:15:08,047 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 2 case distinctions, treesize of input 35 treesize of output 37 [2024-10-18 07:15:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 07:15:08,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 07:15:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-18 07:15:08,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606488599] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-18 07:15:08,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-18 07:15:08,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 19 [2024-10-18 07:15:08,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778784530] [2024-10-18 07:15:08,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-18 07:15:08,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-18 07:15:08,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 07:15:08,639 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-10-18 07:15:08,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5882 treesize of output 5654 [2024-10-18 07:15:08,732 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:08,732 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:08,734 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:08,734 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:08,737 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:08,737 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:08,739 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:08,739 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:08,745 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-18 07:15:08,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2024-10-18 07:15:10,859 INFO L85 PathProgramCache]: Analyzing trace with hash -976882281, now seen corresponding path program 1 times [2024-10-18 07:15:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:15:10,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:15:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 07:15:10,876 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-18 07:15:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 07:15:11,213 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-10-18 07:15:11,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 13844 treesize of output 13182 [2024-10-18 07:15:11,293 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:11,294 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:11,297 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:11,297 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:11,298 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:11,298 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:12,006 INFO L85 PathProgramCache]: Analyzing trace with hash -327369694, now seen corresponding path program 1 times [2024-10-18 07:15:12,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:15:12,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:15:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:15:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 07:15:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:15:12,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:15:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:15:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 07:15:12,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-18 07:15:12,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=296, Unknown=2, NotChecked=0, Total=342 [2024-10-18 07:15:12,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 07:15:12,439 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 07:15:12,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-10-18 07:15:12,440 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 07:15:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-18 07:15:13,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-18 07:15:13,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,SelfDestructingSolverStorable7,SelfDestructingSolverStorable6,SelfDestructingSolverStorable9,9 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 07:15:13,832 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 07:15:13,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 07:15:13,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1776021351, now seen corresponding path program 1 times [2024-10-18 07:15:13,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 07:15:13,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527972369] [2024-10-18 07:15:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:15:13,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:15:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:15:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 07:15:14,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 07:15:14,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527972369] [2024-10-18 07:15:14,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527972369] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 07:15:14,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532826804] [2024-10-18 07:15:14,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:15:14,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 07:15:14,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 07:15:14,684 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) [2024-10-18 07:15:14,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-18 07:15:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:15:14,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-18 07:15:14,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 07:15:14,938 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-10-18 07:15:14,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2024-10-18 07:15:14,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-18 07:15:15,047 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-18 07:15:15,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2024-10-18 07:15:15,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-18 07:15:15,195 INFO L349 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2024-10-18 07:15:15,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 29 [2024-10-18 07:15:15,348 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 07:15:15,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-18 07:15:15,386 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_~#top~0.base|))) (let ((.cse0 (= |c_thr1Thread2of3ForFork0_push_~oldTop~0#1| (select .cse2 |c_~#top~0.offset|)))) (and (or .cse0 (forall ((v_DerPreprocessor_5 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_thr1Thread2of3ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_5) |c_~#top~0.base|) |c_~#top~0.offset|) 0)))) (or (not .cse0) (not (= (select (select (let ((.cse1 (store |c_#memory_int| |c_~#top~0.base| (store .cse2 |c_~#top~0.offset| |c_thr1Thread2of3ForFork0_push_#t~mem8#1|)))) (store .cse1 |c_thr1Thread2of3ForFork0_push_~#ret~0#1.base| (store (select .cse1 |c_thr1Thread2of3ForFork0_push_~#ret~0#1.base|) |c_thr1Thread2of3ForFork0_push_~#ret~0#1.offset| 1))) |c_~#top~0.base|) |c_~#top~0.offset|) 0)))))) is different from false [2024-10-18 07:15:15,403 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_~#top~0.base|))) (let ((.cse0 (= |c_thr1Thread2of3ForFork0_push_~oldTop~0#1| (select .cse2 |c_~#top~0.offset|)))) (and (or .cse0 (forall ((v_DerPreprocessor_5 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_thr1Thread2of3ForFork0_push_~#ret~0#1.base| v_DerPreprocessor_5) |c_~#top~0.base|) |c_~#top~0.offset|) 0)))) (or (not (= (select (select (let ((.cse1 (store |c_#memory_int| |c_~#top~0.base| (store .cse2 |c_~#top~0.offset| (select (select |c_#memory_int| |c_thr1Thread2of3ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread2of3ForFork0_push_~#newTop~0#1.offset|))))) (store .cse1 |c_thr1Thread2of3ForFork0_push_~#ret~0#1.base| (store (select .cse1 |c_thr1Thread2of3ForFork0_push_~#ret~0#1.base|) |c_thr1Thread2of3ForFork0_push_~#ret~0#1.offset| 1))) |c_~#top~0.base|) |c_~#top~0.offset|) 0)) (not .cse0))))) is different from false [2024-10-18 07:15:15,481 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 (Array Int Int)) (|~#top~0.base| Int)) (not (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.base| v_DerPreprocessor_6))) (store .cse1 |~#top~0.base| (store (select .cse1 |~#top~0.base|) |c_~#top~0.offset| (select (select .cse1 |c_thr1Thread2of3ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread2of3ForFork0_push_~#newTop~0#1.offset|)))))) (store .cse0 |c_thr1Thread2of3ForFork0_push_~#ret~0#1.base| (store (select .cse0 |c_thr1Thread2of3ForFork0_push_~#ret~0#1.base|) |c_thr1Thread2of3ForFork0_push_~#ret~0#1.offset| 1))) |~#top~0.base|) |c_~#top~0.offset|) 0))) is different from false [2024-10-18 07:15:15,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-18 07:15:15,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2024-10-18 07:15:15,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-18 07:15:15,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2024-10-18 07:15:15,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-18 07:15:15,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 19502 treesize of output 19094 [2024-10-18 07:15:15,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1509 treesize of output 1445 [2024-10-18 07:15:15,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1405 treesize of output 1341 [2024-10-18 07:15:15,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1321 treesize of output 1305 [2024-10-18 07:15:16,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-18 07:15:16,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-18 07:15:16,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-10-18 07:15:16,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-18 07:15:16,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 197 treesize of output 211 [2024-10-18 07:15:17,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-18 07:15:17,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 49 [2024-10-18 07:15:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-18 07:15:17,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532826804] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-18 07:15:17,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-18 07:15:17,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 30 [2024-10-18 07:15:17,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947851981] [2024-10-18 07:15:17,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-18 07:15:17,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-18 07:15:17,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-18 07:15:17,726 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-18 07:15:17,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 71 [2024-10-18 07:15:17,762 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:17,763 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:17,765 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:17,766 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:17,771 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-18 07:15:17,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2024-10-18 07:15:17,775 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:17,776 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:17,779 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:17,779 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:17,788 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-10-18 07:15:17,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4661 treesize of output 1 [2024-10-18 07:15:18,062 INFO L85 PathProgramCache]: Analyzing trace with hash -976882233, now seen corresponding path program 1 times [2024-10-18 07:15:18,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:15:18,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:15:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 07:15:18,072 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-18 07:15:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 07:15:18,392 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-18 07:15:18,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 72 [2024-10-18 07:15:18,447 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:18,449 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:18,451 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:18,452 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:18,461 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-10-18 07:15:18,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3284 treesize of output 1 [2024-10-18 07:15:18,465 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:18,466 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:18,468 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:18,468 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-18 07:15:18,473 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-18 07:15:18,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2024-10-18 07:15:18,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2116355084, now seen corresponding path program 1 times [2024-10-18 07:15:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:15:18,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:15:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 07:15:18,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-18 07:15:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-18 07:15:18,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-18 07:15:18,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=659, Unknown=3, NotChecked=162, Total=930 [2024-10-18 07:15:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-18 07:15:18,674 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-18 07:15:18,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.064516129032258) internal successors, (126), 30 states have internal predecessors, (126), 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) [2024-10-18 07:15:18,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-10-18 07:15:18,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-18 07:15:21,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-18 07:15:21,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-18 07:15:21,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-18 07:15:21,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-18 07:15:21,646 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-18 07:15:21,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-18 07:15:21,646 INFO L85 PathProgramCache]: Analyzing trace with hash 445065779, now seen corresponding path program 1 times [2024-10-18 07:15:21,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-18 07:15:21,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13200382] [2024-10-18 07:15:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:15:21,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-18 07:15:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:15:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-18 07:15:23,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-18 07:15:23,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13200382] [2024-10-18 07:15:23,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13200382] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-18 07:15:23,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849788874] [2024-10-18 07:15:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-18 07:15:23,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-18 07:15:23,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-18 07:15:23,478 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) [2024-10-18 07:15:23,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-18 07:15:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-18 07:15:23,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-18 07:15:23,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-18 07:15:23,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-18 07:15:23,735 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-18 07:15:23,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-10-18 07:15:23,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-18 07:15:23,883 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-10-18 07:15:23,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-10-18 07:15:23,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-18 07:15:24,182 INFO L349 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2024-10-18 07:15:24,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 40 [2024-10-18 07:15:24,201 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-10-18 07:15:24,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 39 [2024-10-18 07:15:24,766 INFO L349 Elim1Store]: treesize reduction 56, result has 68.4 percent of original size [2024-10-18 07:15:24,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 163 [2024-10-18 07:21:40,432 WARN L286 SmtUtils]: Spent 6.11m on a formula simplification. DAG size of input: 8910 DAG size of output: 8627 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-10-18 07:21:40,443 INFO L349 Elim1Store]: treesize reduction 2228, result has 89.9 percent of original size [2024-10-18 07:21:40,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 57 select indices, 57 select index equivalence classes, 1 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 1652 case distinctions, treesize of input 795 treesize of output 20319 Killed by 15