./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/mix021.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix021.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ --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 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:42:56,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:42:56,523 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:42:56,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:42:56,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:42:56,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:42:56,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:42:56,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:42:56,591 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:42:56,597 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:42:56,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:42:56,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:42:56,599 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:42:56,601 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:42:56,601 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:42:56,602 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:42:56,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:42:56,603 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:42:56,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:42:56,604 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:42:56,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:42:56,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:42:56,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:42:56,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:42:56,607 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:42:56,608 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:42:56,608 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:42:56,609 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:42:56,609 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:42:56,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:42:56,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:42:56,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:42:56,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:42:56,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:42:56,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:42:56,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:42:56,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:42:56,614 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:42:56,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:42:56,615 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:42:56,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:42:56,616 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:42:56,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:42:56,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:42:56,618 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_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db [2023-11-23 22:42:56,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:42:57,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:42:57,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:42:57,022 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:42:57,023 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:42:57,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-wmm/mix021.opt.i [2023-11-23 22:43:00,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:43:00,633 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:43:00,633 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/sv-benchmarks/c/pthread-wmm/mix021.opt.i [2023-11-23 22:43:00,655 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/data/43a5d8f43/41ff32e8f6144dbeb277ecf706464acd/FLAG8e812cb71 [2023-11-23 22:43:00,673 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/data/43a5d8f43/41ff32e8f6144dbeb277ecf706464acd [2023-11-23 22:43:00,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:43:00,683 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:43:00,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:43:00,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:43:00,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:43:00,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:43:00" (1/1) ... [2023-11-23 22:43:00,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ec0d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:00, skipping insertion in model container [2023-11-23 22:43:00,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:43:00" (1/1) ... [2023-11-23 22:43:00,760 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:43:01,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:43:01,271 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:43:01,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:43:01,418 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:43:01,418 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:43:01,427 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:43:01,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01 WrapperNode [2023-11-23 22:43:01,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:43:01,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:43:01,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:43:01,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:43:01,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01" (1/1) ... [2023-11-23 22:43:01,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01" (1/1) ... [2023-11-23 22:43:01,542 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 171 [2023-11-23 22:43:01,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:43:01,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:43:01,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:43:01,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:43:01,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01" (1/1) ... [2023-11-23 22:43:01,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01" (1/1) ... [2023-11-23 22:43:01,574 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01" (1/1) ... [2023-11-23 22:43:01,602 INFO L189 HeapSplitter]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1] [2023-11-23 22:43:01,602 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01" (1/1) ... [2023-11-23 22:43:01,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01" (1/1) ... [2023-11-23 22:43:01,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01" (1/1) ... [2023-11-23 22:43:01,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01" (1/1) ... [2023-11-23 22:43:01,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01" (1/1) ... [2023-11-23 22:43:01,636 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01" (1/1) ... [2023-11-23 22:43:01,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:43:01,641 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:43:01,641 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:43:01,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:43:01,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01" (1/1) ... [2023-11-23 22:43:01,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:43:01,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:43:01,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:43:01,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:43:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:43:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:43:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:43:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:43:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:43:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:43:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:43:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:43:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:43:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 22:43:01,740 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 22:43:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 22:43:01,741 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 22:43:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 22:43:01,741 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 22:43:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-23 22:43:01,742 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-23 22:43:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:43:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:43:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:43:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:43:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:43:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:43:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:43:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:43:01,747 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:43:01,945 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:43:01,947 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:43:02,506 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:43:02,764 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:43:02,764 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:43:02,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:43:02 BoogieIcfgContainer [2023-11-23 22:43:02,765 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:43:02,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:43:02,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:43:02,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:43:02,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:43:00" (1/3) ... [2023-11-23 22:43:02,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d53ef92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:43:02, skipping insertion in model container [2023-11-23 22:43:02,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:01" (2/3) ... [2023-11-23 22:43:02,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d53ef92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:43:02, skipping insertion in model container [2023-11-23 22:43:02,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:43:02" (3/3) ... [2023-11-23 22:43:02,782 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021.opt.i [2023-11-23 22:43:02,792 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:43:02,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:43:02,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-23 22:43:02,801 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:43:02,856 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:43:02,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2023-11-23 22:43:02,936 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2023-11-23 22:43:02,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:43:02,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-23 22:43:02,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2023-11-23 22:43:02,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 47 transitions, 106 flow [2023-11-23 22:43:02,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:43:02,976 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;@7434a733, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:43:02,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-23 22:43:02,991 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:43:02,992 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-23 22:43:02,992 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:43:02,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:02,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:02,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:43:03,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2021671485, now seen corresponding path program 1 times [2023-11-23 22:43:03,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:03,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936982863] [2023-11-23 22:43:03,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:03,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:03,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936982863] [2023-11-23 22:43:03,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936982863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:03,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:03,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:43:03,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381874646] [2023-11-23 22:43:03,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:03,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:43:03,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:03,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:43:03,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:43:03,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2023-11-23 22:43:03,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:03,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:03,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2023-11-23 22:43:03,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:07,147 INFO L124 PetriNetUnfolderBase]: 15277/20541 cut-off events. [2023-11-23 22:43:07,147 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-11-23 22:43:07,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41331 conditions, 20541 events. 15277/20541 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 1904. Compared 138148 event pairs, 7263 based on Foata normal form. 0/14345 useless extension candidates. Maximal degree in co-relation 41319. Up to 20417 conditions per place. [2023-11-23 22:43:07,398 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 45 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2023-11-23 22:43:07,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 251 flow [2023-11-23 22:43:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:43:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:43:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-23 22:43:07,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7516339869281046 [2023-11-23 22:43:07,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-23 22:43:07,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-23 22:43:07,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:07,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-23 22:43:07,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:07,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:07,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:07,427 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 106 flow. Second operand 3 states and 115 transitions. [2023-11-23 22:43:07,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 251 flow [2023-11-23 22:43:07,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 244 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 22:43:07,436 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 149 flow [2023-11-23 22:43:07,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-23 22:43:07,442 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2023-11-23 22:43:07,442 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 149 flow [2023-11-23 22:43:07,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:07,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:07,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:07,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:43:07,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:43:07,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:07,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1187268012, now seen corresponding path program 1 times [2023-11-23 22:43:07,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:07,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485917360] [2023-11-23 22:43:07,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:07,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:07,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:07,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485917360] [2023-11-23 22:43:07,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485917360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:07,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:07,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:43:07,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212988635] [2023-11-23 22:43:07,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:07,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:43:07,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:07,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:43:07,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:43:07,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2023-11-23 22:43:07,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:07,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:07,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2023-11-23 22:43:07,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:09,425 INFO L124 PetriNetUnfolderBase]: 7641/10385 cut-off events. [2023-11-23 22:43:09,426 INFO L125 PetriNetUnfolderBase]: For 908/908 co-relation queries the response was YES. [2023-11-23 22:43:09,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25146 conditions, 10385 events. 7641/10385 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 64848 event pairs, 3143 based on Foata normal form. 0/8385 useless extension candidates. Maximal degree in co-relation 25135. Up to 10260 conditions per place. [2023-11-23 22:43:09,548 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 41 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2023-11-23 22:43:09,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 259 flow [2023-11-23 22:43:09,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:43:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:43:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2023-11-23 22:43:09,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2023-11-23 22:43:09,558 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 126 transitions. [2023-11-23 22:43:09,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 126 transitions. [2023-11-23 22:43:09,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:09,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 126 transitions. [2023-11-23 22:43:09,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.5) internal successors, (126), 4 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) [2023-11-23 22:43:09,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:09,565 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:09,565 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 149 flow. Second operand 4 states and 126 transitions. [2023-11-23 22:43:09,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 259 flow [2023-11-23 22:43:09,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:43:09,574 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 138 flow [2023-11-23 22:43:09,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2023-11-23 22:43:09,576 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2023-11-23 22:43:09,576 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 138 flow [2023-11-23 22:43:09,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:09,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:09,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:09,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:43:09,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:43:09,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:09,578 INFO L85 PathProgramCache]: Analyzing trace with hash 649921897, now seen corresponding path program 1 times [2023-11-23 22:43:09,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:09,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685461111] [2023-11-23 22:43:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:09,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:09,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:09,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685461111] [2023-11-23 22:43:09,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685461111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:09,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:09,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:43:09,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034436140] [2023-11-23 22:43:09,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:09,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:43:09,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:09,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:43:09,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:43:09,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2023-11-23 22:43:09,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:09,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:09,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2023-11-23 22:43:09,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:11,151 INFO L124 PetriNetUnfolderBase]: 5209/7201 cut-off events. [2023-11-23 22:43:11,152 INFO L125 PetriNetUnfolderBase]: For 998/998 co-relation queries the response was YES. [2023-11-23 22:43:11,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17019 conditions, 7201 events. 5209/7201 cut-off events. For 998/998 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 42987 event pairs, 1005 based on Foata normal form. 0/6285 useless extension candidates. Maximal degree in co-relation 17007. Up to 6369 conditions per place. [2023-11-23 22:43:11,220 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 57 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2023-11-23 22:43:11,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 356 flow [2023-11-23 22:43:11,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:43:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:43:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2023-11-23 22:43:11,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2023-11-23 22:43:11,222 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 146 transitions. [2023-11-23 22:43:11,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 146 transitions. [2023-11-23 22:43:11,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:11,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 146 transitions. [2023-11-23 22:43:11,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:11,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:11,225 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:11,225 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 138 flow. Second operand 4 states and 146 transitions. [2023-11-23 22:43:11,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 356 flow [2023-11-23 22:43:11,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:43:11,229 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 190 flow [2023-11-23 22:43:11,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-23 22:43:11,230 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2023-11-23 22:43:11,231 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 190 flow [2023-11-23 22:43:11,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:11,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:11,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:11,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:43:11,232 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:43:11,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:11,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1317286528, now seen corresponding path program 1 times [2023-11-23 22:43:11,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:11,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265640614] [2023-11-23 22:43:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:11,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:11,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:11,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265640614] [2023-11-23 22:43:11,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265640614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:11,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:11,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:43:11,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780860426] [2023-11-23 22:43:11,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:11,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:43:11,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:11,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:43:11,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:43:11,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2023-11-23 22:43:11,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:11,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:11,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2023-11-23 22:43:11,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:12,455 INFO L124 PetriNetUnfolderBase]: 3481/4849 cut-off events. [2023-11-23 22:43:12,455 INFO L125 PetriNetUnfolderBase]: For 2424/2424 co-relation queries the response was YES. [2023-11-23 22:43:12,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13178 conditions, 4849 events. 3481/4849 cut-off events. For 2424/2424 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27148 event pairs, 165 based on Foata normal form. 0/4677 useless extension candidates. Maximal degree in co-relation 13165. Up to 2353 conditions per place. [2023-11-23 22:43:12,504 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 67 selfloop transitions, 13 changer transitions 4/99 dead transitions. [2023-11-23 22:43:12,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 99 transitions, 482 flow [2023-11-23 22:43:12,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:43:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:43:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2023-11-23 22:43:12,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7176470588235294 [2023-11-23 22:43:12,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 183 transitions. [2023-11-23 22:43:12,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 183 transitions. [2023-11-23 22:43:12,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:12,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 183 transitions. [2023-11-23 22:43:12,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:12,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:12,513 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:12,513 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 190 flow. Second operand 5 states and 183 transitions. [2023-11-23 22:43:12,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 99 transitions, 482 flow [2023-11-23 22:43:12,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 99 transitions, 464 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-23 22:43:12,523 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 214 flow [2023-11-23 22:43:12,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-23 22:43:12,525 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-11-23 22:43:12,526 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 214 flow [2023-11-23 22:43:12,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:12,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:12,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:12,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:43:12,527 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:43:12,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:12,527 INFO L85 PathProgramCache]: Analyzing trace with hash -809890605, now seen corresponding path program 1 times [2023-11-23 22:43:12,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:12,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662842248] [2023-11-23 22:43:12,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:12,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:12,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:12,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662842248] [2023-11-23 22:43:12,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662842248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:12,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:12,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:43:12,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934881700] [2023-11-23 22:43:12,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:12,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:43:12,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:12,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:43:12,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:43:12,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2023-11-23 22:43:12,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:12,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:12,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2023-11-23 22:43:12,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:13,599 INFO L124 PetriNetUnfolderBase]: 2809/3937 cut-off events. [2023-11-23 22:43:13,599 INFO L125 PetriNetUnfolderBase]: For 4592/4592 co-relation queries the response was YES. [2023-11-23 22:43:13,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11389 conditions, 3937 events. 2809/3937 cut-off events. For 4592/4592 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 22252 event pairs, 45 based on Foata normal form. 160/4085 useless extension candidates. Maximal degree in co-relation 11375. Up to 1664 conditions per place. [2023-11-23 22:43:13,625 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 0 selfloop transitions, 0 changer transitions 91/91 dead transitions. [2023-11-23 22:43:13,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 91 transitions, 434 flow [2023-11-23 22:43:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:43:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:43:13,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2023-11-23 22:43:13,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2023-11-23 22:43:13,628 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 194 transitions. [2023-11-23 22:43:13,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 194 transitions. [2023-11-23 22:43:13,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:13,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 194 transitions. [2023-11-23 22:43:13,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:13,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:13,634 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:13,634 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 214 flow. Second operand 6 states and 194 transitions. [2023-11-23 22:43:13,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 91 transitions, 434 flow [2023-11-23 22:43:13,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 379 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-23 22:43:13,682 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-11-23 22:43:13,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2023-11-23 22:43:13,686 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2023-11-23 22:43:13,687 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-11-23 22:43:13,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:13,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-11-23 22:43:13,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-11-23 22:43:13,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-11-23 22:43:13,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-11-23 22:43:13,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-11-23 22:43:13,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-11-23 22:43:13,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-11-23 22:43:13,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-11-23 22:43:13,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2023-11-23 22:43:13,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2023-11-23 22:43:13,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-11-23 22:43:13,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-11-23 22:43:13,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-11-23 22:43:13,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-11-23 22:43:13,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-11-23 22:43:13,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-11-23 22:43:13,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-11-23 22:43:13,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-11-23 22:43:13,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-11-23 22:43:13,701 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-11-23 22:43:13,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:43:13,701 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-23 22:43:13,710 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 22:43:13,711 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:43:13,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:43:13 BasicIcfg [2023-11-23 22:43:13,719 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:43:13,719 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:43:13,720 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:43:13,720 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:43:13,720 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:43:02" (3/4) ... [2023-11-23 22:43:13,722 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 22:43:13,726 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-23 22:43:13,726 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-23 22:43:13,726 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-23 22:43:13,726 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-23 22:43:13,736 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 86 nodes and edges [2023-11-23 22:43:13,737 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-23 22:43:13,737 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-23 22:43:13,738 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 22:43:13,856 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:43:13,857 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 22:43:13,857 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:43:13,858 INFO L158 Benchmark]: Toolchain (without parser) took 13175.13ms. Allocated memory was 148.9MB in the beginning and 843.1MB in the end (delta: 694.2MB). Free memory was 100.1MB in the beginning and 259.3MB in the end (delta: -159.2MB). Peak memory consumption was 536.2MB. Max. memory is 16.1GB. [2023-11-23 22:43:13,858 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 148.9MB. Free memory is still 122.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:43:13,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 740.59ms. Allocated memory is still 148.9MB. Free memory was 100.1MB in the beginning and 75.6MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 22:43:13,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.84ms. Allocated memory is still 148.9MB. Free memory was 75.6MB in the beginning and 72.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:43:13,859 INFO L158 Benchmark]: Boogie Preprocessor took 97.03ms. Allocated memory is still 148.9MB. Free memory was 72.9MB in the beginning and 69.3MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:43:13,860 INFO L158 Benchmark]: RCFGBuilder took 1124.13ms. Allocated memory is still 148.9MB. Free memory was 69.3MB in the beginning and 75.8MB in the end (delta: -6.5MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2023-11-23 22:43:13,860 INFO L158 Benchmark]: TraceAbstraction took 10946.79ms. Allocated memory was 148.9MB in the beginning and 843.1MB in the end (delta: 694.2MB). Free memory was 75.3MB in the beginning and 264.5MB in the end (delta: -189.3MB). Peak memory consumption was 505.9MB. Max. memory is 16.1GB. [2023-11-23 22:43:13,861 INFO L158 Benchmark]: Witness Printer took 137.83ms. Allocated memory is still 843.1MB. Free memory was 264.5MB in the beginning and 259.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:43:13,863 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 148.9MB. Free memory is still 122.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 740.59ms. Allocated memory is still 148.9MB. Free memory was 100.1MB in the beginning and 75.6MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.84ms. Allocated memory is still 148.9MB. Free memory was 75.6MB in the beginning and 72.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 97.03ms. Allocated memory is still 148.9MB. Free memory was 72.9MB in the beginning and 69.3MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1124.13ms. Allocated memory is still 148.9MB. Free memory was 69.3MB in the beginning and 75.8MB in the end (delta: -6.5MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * TraceAbstraction took 10946.79ms. Allocated memory was 148.9MB in the beginning and 843.1MB in the end (delta: 694.2MB). Free memory was 75.3MB in the beginning and 264.5MB in the end (delta: -189.3MB). Peak memory consumption was 505.9MB. Max. memory is 16.1GB. * Witness Printer took 137.83ms. Allocated memory is still 843.1MB. Free memory was 264.5MB in the beginning and 259.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 758]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 758]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 773]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 773]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 801]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 801]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 847]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 847]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 93 locations, 20 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 215 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 205 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 439 IncrementalHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 2 mSDtfsCounter, 439 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 22:43:13,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5710fe47-3f26-4f98-9f50-c55c0cd57671/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE