./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/mix036_power.opt_rmo.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_999d8884-fead-4541-87c2-4704a2f3a1b6/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/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_999d8884-fead-4541-87c2-4704a2f3a1b6/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix036_power.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/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_999d8884-fead-4541-87c2-4704a2f3a1b6/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 f5d83fc7ee9b26859e9993ee2fcff801f4a9d92dea17a48a6a39594bb6b759ca --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:25:20,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:25:20,135 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:25:20,139 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:25:20,140 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:25:20,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:25:20,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:25:20,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:25:20,168 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:25:20,168 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:25:20,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:25:20,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:25:20,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:25:20,171 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:25:20,172 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:25:20,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:25:20,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:25:20,173 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:25:20,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:25:20,175 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:25:20,175 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:25:20,181 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:25:20,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:25:20,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:25:20,183 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:25:20,183 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:25:20,183 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:25:20,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:25:20,184 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:25:20,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:25:20,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:25:20,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:25:20,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:25:20,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:25:20,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:25:20,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:25:20,188 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:25:20,188 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:25:20,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:25:20,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:25:20,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:25:20,191 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:25:20,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:25:20,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:25:20,192 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_999d8884-fead-4541-87c2-4704a2f3a1b6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5d83fc7ee9b26859e9993ee2fcff801f4a9d92dea17a48a6a39594bb6b759ca [2023-11-23 22:25:20,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:25:20,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:25:20,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:25:20,548 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:25:20,548 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:25:20,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-wmm/mix036_power.opt_rmo.opt.i [2023-11-23 22:25:23,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:25:24,153 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:25:24,154 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/sv-benchmarks/c/pthread-wmm/mix036_power.opt_rmo.opt.i [2023-11-23 22:25:24,170 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/bin/uautomizer-verify-zZY32mL2XJ/data/95758cb1d/500a539961714255b9c270437311cab3/FLAGccc41ae4a [2023-11-23 22:25:24,186 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/bin/uautomizer-verify-zZY32mL2XJ/data/95758cb1d/500a539961714255b9c270437311cab3 [2023-11-23 22:25:24,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:25:24,190 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:25:24,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:25:24,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:25:24,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:25:24,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654405cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24, skipping insertion in model container [2023-11-23 22:25:24,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,275 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:25:24,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:25:24,740 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:25:24,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:25:24,849 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:25:24,849 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:25:24,857 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:25:24,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24 WrapperNode [2023-11-23 22:25:24,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:25:24,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:25:24,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:25:24,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:25:24,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,924 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2023-11-23 22:25:24,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:25:24,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:25:24,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:25:24,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:25:24,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,944 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,961 INFO L189 HeapSplitter]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1] [2023-11-23 22:25:24,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,973 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,975 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,979 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,986 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:25:24,987 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:25:24,988 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:25:24,988 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:25:24,989 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24" (1/1) ... [2023-11-23 22:25:24,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:25:25,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:25:25,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:25:25,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:25:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:25:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:25:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:25:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:25:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:25:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:25:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:25:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:25:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:25:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 22:25:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 22:25:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 22:25:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 22:25:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 22:25:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 22:25:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-23 22:25:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-23 22:25:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:25:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:25:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:25:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:25:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:25:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:25:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:25:25,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:25:25,068 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 22:25:25,231 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:25:25,233 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:25:25,686 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:25:25,952 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:25:25,952 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:25:25,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:25:25 BoogieIcfgContainer [2023-11-23 22:25:25,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:25:25,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:25:25,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:25:25,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:25:25,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:25:24" (1/3) ... [2023-11-23 22:25:25,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a72369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:25:25, skipping insertion in model container [2023-11-23 22:25:25,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:24" (2/3) ... [2023-11-23 22:25:25,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a72369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:25:25, skipping insertion in model container [2023-11-23 22:25:25,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:25:25" (3/3) ... [2023-11-23 22:25:25,962 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036_power.opt_rmo.opt.i [2023-11-23 22:25:25,971 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:25:25,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:25:25,981 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-23 22:25:25,981 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:25:26,061 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:25:26,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2023-11-23 22:25:26,143 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2023-11-23 22:25:26,148 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:25:26,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-23 22:25:26,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2023-11-23 22:25:26,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 48 transitions, 108 flow [2023-11-23 22:25:26,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:25:26,193 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;@5cde288c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:25:26,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-23 22:25:26,209 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:25:26,209 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-23 22:25:26,210 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:25:26,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:25:26,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:25:26,212 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 22:25:26,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:25:26,219 INFO L85 PathProgramCache]: Analyzing trace with hash -770155068, now seen corresponding path program 1 times [2023-11-23 22:25:26,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:25:26,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831487142] [2023-11-23 22:25:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:25:26,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:25:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:26,572 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 22:25:26,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:25:26,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831487142] [2023-11-23 22:25:26,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831487142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:25:26,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:25:26,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:25:26,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370610751] [2023-11-23 22:25:26,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:25:26,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:25:26,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:25:26,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:25:26,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:25:26,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-23 22:25:26,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 22:25:26,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:25:26,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-23 22:25:26,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:25:30,160 INFO L124 PetriNetUnfolderBase]: 16133/21717 cut-off events. [2023-11-23 22:25:30,161 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-11-23 22:25:30,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43735 conditions, 21717 events. 16133/21717 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 1768. Compared 144735 event pairs, 7407 based on Foata normal form. 0/15342 useless extension candidates. Maximal degree in co-relation 43723. Up to 21469 conditions per place. [2023-11-23 22:25:30,379 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 45 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-11-23 22:25:30,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 253 flow [2023-11-23 22:25:30,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:25:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:25:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2023-11-23 22:25:30,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7564102564102564 [2023-11-23 22:25:30,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2023-11-23 22:25:30,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2023-11-23 22:25:30,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:25:30,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2023-11-23 22:25:30,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 22:25:30,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 22:25:30,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 22:25:30,406 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 108 flow. Second operand 3 states and 118 transitions. [2023-11-23 22:25:30,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 253 flow [2023-11-23 22:25:30,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 22:25:30,415 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 151 flow [2023-11-23 22:25:30,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2023-11-23 22:25:30,420 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-11-23 22:25:30,421 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 151 flow [2023-11-23 22:25:30,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 22:25:30,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:25:30,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:25:30,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:25:30,422 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 22:25:30,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:25:30,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1656300799, now seen corresponding path program 1 times [2023-11-23 22:25:30,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:25:30,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092240414] [2023-11-23 22:25:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:25:30,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:25:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:30,681 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 22:25:30,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:25:30,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092240414] [2023-11-23 22:25:30,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092240414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:25:30,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:25:30,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:25:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728709625] [2023-11-23 22:25:30,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:25:30,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:25:30,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:25:30,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:25:30,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:25:30,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-23 22:25:30,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 22:25:30,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:25:30,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-23 22:25:30,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:25:32,486 INFO L124 PetriNetUnfolderBase]: 8325/11333 cut-off events. [2023-11-23 22:25:32,487 INFO L125 PetriNetUnfolderBase]: For 929/929 co-relation queries the response was YES. [2023-11-23 22:25:32,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27278 conditions, 11333 events. 8325/11333 cut-off events. For 929/929 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 70892 event pairs, 3259 based on Foata normal form. 0/9218 useless extension candidates. Maximal degree in co-relation 27267. Up to 11084 conditions per place. [2023-11-23 22:25:32,601 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 41 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-11-23 22:25:32,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 261 flow [2023-11-23 22:25:32,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:25:32,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:25:32,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2023-11-23 22:25:32,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-23 22:25:32,612 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 130 transitions. [2023-11-23 22:25:32,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 130 transitions. [2023-11-23 22:25:32,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:25:32,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 130 transitions. [2023-11-23 22:25:32,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.5) internal successors, (130), 4 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 22:25:32,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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 22:25:32,620 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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 22:25:32,621 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 151 flow. Second operand 4 states and 130 transitions. [2023-11-23 22:25:32,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 261 flow [2023-11-23 22:25:32,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:25:32,630 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 140 flow [2023-11-23 22:25:32,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-11-23 22:25:32,632 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-23 22:25:32,632 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 140 flow [2023-11-23 22:25:32,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 22:25:32,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:25:32,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:25:32,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:25:32,634 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 22:25:32,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:25:32,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1495646100, now seen corresponding path program 1 times [2023-11-23 22:25:32,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:25:32,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642986109] [2023-11-23 22:25:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:25:32,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:25:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:32,900 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 22:25:32,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:25:32,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642986109] [2023-11-23 22:25:32,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642986109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:25:32,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:25:32,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:25:32,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252515746] [2023-11-23 22:25:32,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:25:32,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:25:32,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:25:32,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:25:32,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:25:32,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-23 22:25:32,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 22:25:32,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:25:32,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-23 22:25:32,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:25:34,035 INFO L124 PetriNetUnfolderBase]: 5721/7921 cut-off events. [2023-11-23 22:25:34,036 INFO L125 PetriNetUnfolderBase]: For 1144/1144 co-relation queries the response was YES. [2023-11-23 22:25:34,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18623 conditions, 7921 events. 5721/7921 cut-off events. For 1144/1144 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 47217 event pairs, 1065 based on Foata normal form. 0/6955 useless extension candidates. Maximal degree in co-relation 18611. Up to 6625 conditions per place. [2023-11-23 22:25:34,115 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 57 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2023-11-23 22:25:34,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 358 flow [2023-11-23 22:25:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:25:34,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:25:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2023-11-23 22:25:34,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7211538461538461 [2023-11-23 22:25:34,118 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 150 transitions. [2023-11-23 22:25:34,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 150 transitions. [2023-11-23 22:25:34,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:25:34,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 150 transitions. [2023-11-23 22:25:34,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 22:25:34,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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 22:25:34,121 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 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 22:25:34,121 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 140 flow. Second operand 4 states and 150 transitions. [2023-11-23 22:25:34,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 358 flow [2023-11-23 22:25:34,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:25:34,125 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 192 flow [2023-11-23 22:25:34,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2023-11-23 22:25:34,127 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-11-23 22:25:34,127 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 192 flow [2023-11-23 22:25:34,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 22:25:34,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:25:34,128 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 22:25:34,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:25:34,128 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 22:25:34,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:25:34,129 INFO L85 PathProgramCache]: Analyzing trace with hash 630131887, now seen corresponding path program 1 times [2023-11-23 22:25:34,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:25:34,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43718117] [2023-11-23 22:25:34,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:25:34,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:25:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:34,352 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 22:25:34,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:25:34,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43718117] [2023-11-23 22:25:34,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43718117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:25:34,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:25:34,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:25:34,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021802098] [2023-11-23 22:25:34,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:25:34,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:25:34,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:25:34,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:25:34,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:25:34,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-23 22:25:34,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:25:34,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:25:34,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-23 22:25:34,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:25:35,252 INFO L124 PetriNetUnfolderBase]: 3993/5569 cut-off events. [2023-11-23 22:25:35,252 INFO L125 PetriNetUnfolderBase]: For 2766/2766 co-relation queries the response was YES. [2023-11-23 22:25:35,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14938 conditions, 5569 events. 3993/5569 cut-off events. For 2766/2766 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 31667 event pairs, 225 based on Foata normal form. 0/5347 useless extension candidates. Maximal degree in co-relation 14925. Up to 2353 conditions per place. [2023-11-23 22:25:35,301 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 67 selfloop transitions, 13 changer transitions 4/100 dead transitions. [2023-11-23 22:25:35,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 100 transitions, 484 flow [2023-11-23 22:25:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:25:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:25:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2023-11-23 22:25:35,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7230769230769231 [2023-11-23 22:25:35,303 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 188 transitions. [2023-11-23 22:25:35,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 188 transitions. [2023-11-23 22:25:35,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:25:35,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 188 transitions. [2023-11-23 22:25:35,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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 22:25:35,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 states have internal predecessors, (312), 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 22:25:35,306 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 states have internal predecessors, (312), 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 22:25:35,307 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 192 flow. Second operand 5 states and 188 transitions. [2023-11-23 22:25:35,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 100 transitions, 484 flow [2023-11-23 22:25:35,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 466 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-23 22:25:35,313 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 216 flow [2023-11-23 22:25:35,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-23 22:25:35,314 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2023-11-23 22:25:35,314 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 216 flow [2023-11-23 22:25:35,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:25:35,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:25:35,315 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, 1] [2023-11-23 22:25:35,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:25:35,315 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 22:25:35,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:25:35,315 INFO L85 PathProgramCache]: Analyzing trace with hash 550772838, now seen corresponding path program 1 times [2023-11-23 22:25:35,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:25:35,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606180796] [2023-11-23 22:25:35,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:25:35,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:25:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:35,511 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 22:25:35,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:25:35,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606180796] [2023-11-23 22:25:35,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606180796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:25:35,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:25:35,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:25:35,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507498134] [2023-11-23 22:25:35,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:25:35,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:25:35,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:25:35,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:25:35,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:25:35,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-23 22:25:35,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 22:25:35,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:25:35,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-23 22:25:35,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:25:36,501 INFO L124 PetriNetUnfolderBase]: 3321/4657 cut-off events. [2023-11-23 22:25:36,502 INFO L125 PetriNetUnfolderBase]: For 5046/5046 co-relation queries the response was YES. [2023-11-23 22:25:36,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13137 conditions, 4657 events. 3321/4657 cut-off events. For 5046/5046 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 26942 event pairs, 105 based on Foata normal form. 160/4755 useless extension candidates. Maximal degree in co-relation 13123. Up to 1920 conditions per place. [2023-11-23 22:25:36,528 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 0 selfloop transitions, 0 changer transitions 92/92 dead transitions. [2023-11-23 22:25:36,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 92 transitions, 436 flow [2023-11-23 22:25:36,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:25:36,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:25:36,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2023-11-23 22:25:36,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2023-11-23 22:25:36,531 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 200 transitions. [2023-11-23 22:25:36,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 200 transitions. [2023-11-23 22:25:36,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:25:36,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 200 transitions. [2023-11-23 22:25:36,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.333333333333336) internal successors, (200), 6 states have internal predecessors, (200), 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 22:25:36,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 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 22:25:36,536 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 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 22:25:36,536 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 216 flow. Second operand 6 states and 200 transitions. [2023-11-23 22:25:36,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 92 transitions, 436 flow [2023-11-23 22:25:36,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 92 transitions, 381 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-23 22:25:36,598 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-11-23 22:25:36,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-11-23 22:25:36,599 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-23 22:25:36,600 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-11-23 22:25:36,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 22:25:36,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-11-23 22:25:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-11-23 22:25:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-11-23 22:25:36,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-11-23 22:25:36,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-11-23 22:25:36,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-11-23 22:25:36,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-11-23 22:25:36,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-11-23 22:25:36,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2023-11-23 22:25:36,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2023-11-23 22:25:36,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-11-23 22:25:36,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-11-23 22:25:36,608 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-11-23 22:25:36,608 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-11-23 22:25:36,608 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-11-23 22:25:36,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-11-23 22:25:36,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-11-23 22:25:36,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-11-23 22:25:36,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-11-23 22:25:36,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-11-23 22:25:36,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:25:36,611 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-23 22:25:36,618 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 22:25:36,618 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:25:36,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:25:36 BasicIcfg [2023-11-23 22:25:36,625 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:25:36,625 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:25:36,626 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:25:36,626 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:25:36,627 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:25:25" (3/4) ... [2023-11-23 22:25:36,628 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 22:25:36,632 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-23 22:25:36,632 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-23 22:25:36,632 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-23 22:25:36,633 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-23 22:25:36,640 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2023-11-23 22:25:36,640 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-23 22:25:36,641 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-23 22:25:36,641 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 22:25:36,739 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:25:36,739 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 22:25:36,740 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:25:36,740 INFO L158 Benchmark]: Toolchain (without parser) took 12550.11ms. Allocated memory was 138.4MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 104.0MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 351.1MB. Max. memory is 16.1GB. [2023-11-23 22:25:36,741 INFO L158 Benchmark]: CDTParser took 2.00ms. Allocated memory is still 138.4MB. Free memory was 112.2MB in the beginning and 112.0MB in the end (delta: 165.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:25:36,741 INFO L158 Benchmark]: CACSL2BoogieTranslator took 666.51ms. Allocated memory is still 138.4MB. Free memory was 103.7MB in the beginning and 79.9MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 22:25:36,742 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.65ms. Allocated memory is still 138.4MB. Free memory was 79.9MB in the beginning and 77.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:25:36,742 INFO L158 Benchmark]: Boogie Preprocessor took 61.51ms. Allocated memory is still 138.4MB. Free memory was 77.5MB in the beginning and 74.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:25:36,743 INFO L158 Benchmark]: RCFGBuilder took 965.56ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 74.0MB in the beginning and 119.4MB in the end (delta: -45.4MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2023-11-23 22:25:36,743 INFO L158 Benchmark]: TraceAbstraction took 10669.42ms. Allocated memory was 188.7MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 118.2MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 619.7MB. Max. memory is 16.1GB. [2023-11-23 22:25:36,744 INFO L158 Benchmark]: Witness Printer took 114.35ms. Allocated memory is still 1.8GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 22:25:36,746 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.00ms. Allocated memory is still 138.4MB. Free memory was 112.2MB in the beginning and 112.0MB in the end (delta: 165.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 666.51ms. Allocated memory is still 138.4MB. Free memory was 103.7MB in the beginning and 79.9MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.65ms. Allocated memory is still 138.4MB. Free memory was 79.9MB in the beginning and 77.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.51ms. Allocated memory is still 138.4MB. Free memory was 77.5MB in the beginning and 74.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 965.56ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 74.0MB in the beginning and 119.4MB in the end (delta: -45.4MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. * TraceAbstraction took 10669.42ms. Allocated memory was 188.7MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 118.2MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 619.7MB. Max. memory is 16.1GB. * Witness Printer took 114.35ms. Allocated memory is still 1.8GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 764]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 764]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 792]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 792]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 822]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 822]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 848]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 848]: 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, 95 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: 10.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 272 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 262 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 431 IncrementalHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 0 mSDtfsCounter, 431 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=216occurred 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, 1.0s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 243 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 22:25:36,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999d8884-fead-4541-87c2-4704a2f3a1b6/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