./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3efee66e785ce3d2f2ce0101e78a1cdae99209fb089cd0ed9c95f4aa53c186ea --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:52,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:52,191 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:36:52,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:52,199 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:52,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:52,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:52,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:52,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:52,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:52,235 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:52,235 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:52,236 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:52,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:52,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:36:52,238 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:52,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:52,240 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:52,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:52,241 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:36:52,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:52,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:36:52,244 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:36:52,244 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:36:52,245 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:52,246 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:36:52,246 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:52,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:52,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:52,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:52,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:52,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:52,250 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:52,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:36:52,251 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:52,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:52,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:52,252 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:36:52,253 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:52,253 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:52,254 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:52,254 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3efee66e785ce3d2f2ce0101e78a1cdae99209fb089cd0ed9c95f4aa53c186ea [2023-11-19 07:36:52,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:52,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:52,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:52,629 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:52,630 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:52,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i [2023-11-19 07:36:56,369 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:56,751 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:56,751 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i [2023-11-19 07:36:56,774 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu/data/ffe571625/f00b587ab4f04e14bd18d894c5332d14/FLAGfc338ce97 [2023-11-19 07:36:56,792 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu/data/ffe571625/f00b587ab4f04e14bd18d894c5332d14 [2023-11-19 07:36:56,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:56,797 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:56,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:56,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:56,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:56,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:56" (1/1) ... [2023-11-19 07:36:56,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@640baf8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:56, skipping insertion in model container [2023-11-19 07:36:56,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:56" (1/1) ... [2023-11-19 07:36:56,880 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:57,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:57,377 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:57,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:57,541 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:57,541 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:57,551 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:57,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57 WrapperNode [2023-11-19 07:36:57,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:57,554 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:57,555 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:57,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:57,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57" (1/1) ... [2023-11-19 07:36:57,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57" (1/1) ... [2023-11-19 07:36:57,652 INFO L138 Inliner]: procedures = 179, calls = 50, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 202 [2023-11-19 07:36:57,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:57,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:57,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:57,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:57,668 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57" (1/1) ... [2023-11-19 07:36:57,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57" (1/1) ... [2023-11-19 07:36:57,685 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57" (1/1) ... [2023-11-19 07:36:57,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57" (1/1) ... [2023-11-19 07:36:57,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57" (1/1) ... [2023-11-19 07:36:57,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57" (1/1) ... [2023-11-19 07:36:57,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57" (1/1) ... [2023-11-19 07:36:57,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57" (1/1) ... [2023-11-19 07:36:57,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:57,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:57,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:57,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:57,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57" (1/1) ... [2023-11-19 07:36:57,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:57,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:57,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:57,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b80a8b2-4d80-46bb-bc40-b5fad96f2e67/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:57,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:36:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:36:57,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:36:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:36:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:36:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:36:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:36:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:36:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:36:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:57,846 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:36:58,022 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:58,024 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:58,470 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:58,723 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:58,724 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:36:58,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:58 BoogieIcfgContainer [2023-11-19 07:36:58,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:58,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:58,737 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:58,741 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:58,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:56" (1/3) ... [2023-11-19 07:36:58,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6141629b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:58, skipping insertion in model container [2023-11-19 07:36:58,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57" (2/3) ... [2023-11-19 07:36:58,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6141629b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:58, skipping insertion in model container [2023-11-19 07:36:58,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:58" (3/3) ... [2023-11-19 07:36:58,747 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-1.i [2023-11-19 07:36:58,758 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:36:58,770 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:58,770 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-19 07:36:58,771 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:36:58,883 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:36:58,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 134 transitions, 272 flow [2023-11-19 07:36:59,004 INFO L124 PetriNetUnfolderBase]: 11/145 cut-off events. [2023-11-19 07:36:59,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:59,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 145 events. 11/145 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 156 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 111. Up to 4 conditions per place. [2023-11-19 07:36:59,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 134 transitions, 272 flow [2023-11-19 07:36:59,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 134 transitions, 272 flow [2023-11-19 07:36:59,038 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:59,057 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 134 transitions, 272 flow [2023-11-19 07:36:59,063 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 134 transitions, 272 flow [2023-11-19 07:36:59,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 134 transitions, 272 flow [2023-11-19 07:36:59,158 INFO L124 PetriNetUnfolderBase]: 11/145 cut-off events. [2023-11-19 07:36:59,159 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:59,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 145 events. 11/145 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 156 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 111. Up to 4 conditions per place. [2023-11-19 07:36:59,167 INFO L119 LiptonReduction]: Number of co-enabled transitions 2744 [2023-11-19 07:37:05,430 INFO L134 LiptonReduction]: Checked pairs total: 3771 [2023-11-19 07:37:05,432 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-11-19 07:37:05,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:05,457 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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;@7ecc4924, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:05,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-19 07:37:05,462 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:37:05,462 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-11-19 07:37:05,462 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:05,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:05,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:37:05,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:37:05,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:05,469 INFO L85 PathProgramCache]: Analyzing trace with hash 244699405, now seen corresponding path program 1 times [2023-11-19 07:37:05,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:05,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635794204] [2023-11-19 07:37:05,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:05,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:05,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:05,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:05,676 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:37:05,678 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-19 07:37:05,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-19 07:37:05,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-19 07:37:05,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-19 07:37:05,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-19 07:37:05,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-19 07:37:05,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-19 07:37:05,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-19 07:37:05,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-19 07:37:05,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-19 07:37:05,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-19 07:37:05,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-19 07:37:05,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-19 07:37:05,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-19 07:37:05,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-19 07:37:05,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-19 07:37:05,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-19 07:37:05,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-19 07:37:05,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-19 07:37:05,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-19 07:37:05,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-19 07:37:05,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:37:05,690 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 07:37:05,694 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:37:05,695 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:37:05,767 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:37:05,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 233 transitions, 476 flow [2023-11-19 07:37:05,845 INFO L124 PetriNetUnfolderBase]: 21/257 cut-off events. [2023-11-19 07:37:05,845 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:37:05,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 257 events. 21/257 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 565 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 209. Up to 6 conditions per place. [2023-11-19 07:37:05,851 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 233 transitions, 476 flow [2023-11-19 07:37:05,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 233 transitions, 476 flow [2023-11-19 07:37:05,856 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:37:05,857 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 233 transitions, 476 flow [2023-11-19 07:37:05,857 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 233 transitions, 476 flow [2023-11-19 07:37:05,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 233 transitions, 476 flow [2023-11-19 07:37:05,913 INFO L124 PetriNetUnfolderBase]: 21/257 cut-off events. [2023-11-19 07:37:05,914 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:37:05,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 257 events. 21/257 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 565 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 209. Up to 6 conditions per place. [2023-11-19 07:37:05,938 INFO L119 LiptonReduction]: Number of co-enabled transitions 24892 [2023-11-19 07:37:11,989 INFO L134 LiptonReduction]: Checked pairs total: 64810 [2023-11-19 07:37:11,989 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-11-19 07:37:11,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:11,994 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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;@7ecc4924, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:11,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-19 07:37:12,000 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:37:12,000 INFO L124 PetriNetUnfolderBase]: 2/29 cut-off events. [2023-11-19 07:37:12,000 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:37:12,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:12,001 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:37:12,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-19 07:37:12,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:12,002 INFO L85 PathProgramCache]: Analyzing trace with hash 861972497, now seen corresponding path program 1 times [2023-11-19 07:37:12,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:12,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290192217] [2023-11-19 07:37:12,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:12,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:12,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:12,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:12,067 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:37:12,068 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-19 07:37:12,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2023-11-19 07:37:12,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2023-11-19 07:37:12,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2023-11-19 07:37:12,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2023-11-19 07:37:12,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2023-11-19 07:37:12,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2023-11-19 07:37:12,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2023-11-19 07:37:12,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2023-11-19 07:37:12,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2023-11-19 07:37:12,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2023-11-19 07:37:12,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2023-11-19 07:37:12,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2023-11-19 07:37:12,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2023-11-19 07:37:12,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2023-11-19 07:37:12,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2023-11-19 07:37:12,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2023-11-19 07:37:12,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2023-11-19 07:37:12,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2023-11-19 07:37:12,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2023-11-19 07:37:12,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2023-11-19 07:37:12,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2023-11-19 07:37:12,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2023-11-19 07:37:12,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2023-11-19 07:37:12,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2023-11-19 07:37:12,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2023-11-19 07:37:12,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2023-11-19 07:37:12,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2023-11-19 07:37:12,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2023-11-19 07:37:12,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2023-11-19 07:37:12,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2023-11-19 07:37:12,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:37:12,078 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 07:37:12,079 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:37:12,080 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:37:12,154 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:37:12,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 332 transitions, 682 flow [2023-11-19 07:37:12,279 INFO L124 PetriNetUnfolderBase]: 31/369 cut-off events. [2023-11-19 07:37:12,280 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:37:12,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 369 events. 31/369 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1139 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 307. Up to 8 conditions per place. [2023-11-19 07:37:12,290 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 332 transitions, 682 flow [2023-11-19 07:37:12,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 332 transitions, 682 flow [2023-11-19 07:37:12,299 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:37:12,300 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 311 places, 332 transitions, 682 flow [2023-11-19 07:37:12,301 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 311 places, 332 transitions, 682 flow [2023-11-19 07:37:12,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 332 transitions, 682 flow [2023-11-19 07:37:12,409 INFO L124 PetriNetUnfolderBase]: 31/369 cut-off events. [2023-11-19 07:37:12,409 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:37:12,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 369 events. 31/369 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1139 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 307. Up to 8 conditions per place. [2023-11-19 07:37:12,454 INFO L119 LiptonReduction]: Number of co-enabled transitions 66444 [2023-11-19 07:37:20,063 INFO L134 LiptonReduction]: Checked pairs total: 184886 [2023-11-19 07:37:20,064 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-11-19 07:37:20,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:20,069 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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;@7ecc4924, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:20,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-11-19 07:37:20,076 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:37:20,077 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2023-11-19 07:37:20,077 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:37:20,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:20,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:20,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-19 07:37:20,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:20,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1948323467, now seen corresponding path program 1 times [2023-11-19 07:37:20,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:20,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612186253] [2023-11-19 07:37:20,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:20,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:20,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:20,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:20,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612186253] [2023-11-19 07:37:20,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612186253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:20,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:20,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:20,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019501276] [2023-11-19 07:37:20,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:20,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:20,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:20,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 585 [2023-11-19 07:37:20,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 144 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:20,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:20,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 585 [2023-11-19 07:37:20,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:33,053 INFO L124 PetriNetUnfolderBase]: 62383/95497 cut-off events. [2023-11-19 07:37:33,053 INFO L125 PetriNetUnfolderBase]: For 2974/2974 co-relation queries the response was YES. [2023-11-19 07:37:33,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180865 conditions, 95497 events. 62383/95497 cut-off events. For 2974/2974 co-relation queries the response was YES. Maximal size of possible extension queue 2448. Compared 773435 event pairs, 27886 based on Foata normal form. 966/68201 useless extension candidates. Maximal degree in co-relation 109724. Up to 61800 conditions per place. [2023-11-19 07:37:34,215 INFO L140 encePairwiseOnDemand]: 566/585 looper letters, 220 selfloop transitions, 13 changer transitions 0/291 dead transitions. [2023-11-19 07:37:34,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 291 transitions, 1097 flow [2023-11-19 07:37:34,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:37:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1668 transitions. [2023-11-19 07:37:34,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5702564102564103 [2023-11-19 07:37:34,247 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1668 transitions. [2023-11-19 07:37:34,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1668 transitions. [2023-11-19 07:37:34,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:34,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1668 transitions. [2023-11-19 07:37:34,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 333.6) internal successors, (1668), 5 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:34,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 585.0) internal successors, (3510), 6 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:34,287 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 585.0) internal successors, (3510), 6 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:34,289 INFO L175 Difference]: Start difference. First operand has 130 places, 144 transitions, 306 flow. Second operand 5 states and 1668 transitions. [2023-11-19 07:37:34,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 291 transitions, 1097 flow [2023-11-19 07:37:34,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 291 transitions, 1089 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-19 07:37:34,313 INFO L231 Difference]: Finished difference. Result has 136 places, 147 transitions, 398 flow [2023-11-19 07:37:34,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=136, PETRI_TRANSITIONS=147} [2023-11-19 07:37:34,320 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 6 predicate places. [2023-11-19 07:37:34,324 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 147 transitions, 398 flow [2023-11-19 07:37:34,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:34,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:34,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:34,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:37:34,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-19 07:37:34,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:34,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2115518457, now seen corresponding path program 1 times [2023-11-19 07:37:34,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:34,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358425863] [2023-11-19 07:37:34,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:34,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:34,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:34,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358425863] [2023-11-19 07:37:34,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358425863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:34,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:34,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:37:34,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950662908] [2023-11-19 07:37:34,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:34,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:34,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:34,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:34,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:34,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 585 [2023-11-19 07:37:34,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 147 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:34,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:34,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 585 [2023-11-19 07:37:34,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand