./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/mix046.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix046.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme --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 f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:06:33,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:06:33,547 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 12:06:33,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:06:33,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:06:33,598 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:06:33,599 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:06:33,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:06:33,600 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:06:33,606 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:06:33,606 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:06:33,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:06:33,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:06:33,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:06:33,611 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:06:33,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:06:33,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:06:33,612 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:06:33,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:06:33,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:06:33,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:06:33,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:06:33,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:06:33,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:06:33,615 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:06:33,616 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:06:33,616 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:06:33,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:06:33,617 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:06:33,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:06:33,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:06:33,619 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:06:33,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:06:33,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:06:33,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:06:33,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:06:33,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:06:33,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:06:33,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:06:33,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:06:33,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:06:33,622 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:06:33,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:06:33,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:06:33,623 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_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 [2023-11-26 12:06:33,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:06:33,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:06:33,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:06:33,995 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:06:33,995 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:06:33,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix046.opt.i [2023-11-26 12:06:37,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:06:37,516 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:06:37,518 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/sv-benchmarks/c/pthread-wmm/mix046.opt.i [2023-11-26 12:06:37,537 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/data/676b1dac6/f8325d8e4b4641e0bf9ffe90f6a7c238/FLAG548da0c47 [2023-11-26 12:06:37,553 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/data/676b1dac6/f8325d8e4b4641e0bf9ffe90f6a7c238 [2023-11-26 12:06:37,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:06:37,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:06:37,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:37,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:06:37,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:06:37,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:37" (1/1) ... [2023-11-26 12:06:37,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c478131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:37, skipping insertion in model container [2023-11-26 12:06:37,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:37" (1/1) ... [2023-11-26 12:06:37,623 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:06:38,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:38,064 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:06:38,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:38,188 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:06:38,188 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:06:38,196 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:06:38,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38 WrapperNode [2023-11-26 12:06:38,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:38,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:38,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:06:38,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:06:38,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,321 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 175 [2023-11-26 12:06:38,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:38,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:06:38,330 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:06:38,330 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:06:38,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,415 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 12:06:38,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:06:38,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:06:38,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:06:38,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:06:38,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:06:38,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:38,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:06:38,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:06:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:06:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:06:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:06:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:06:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:06:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:06:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:06:38,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:06:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:06:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 12:06:38,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 12:06:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 12:06:38,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 12:06:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 12:06:38,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 12:06:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 12:06:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 12:06:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:06:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:06:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:06:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:06:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:06:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:06:38,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:06:38,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:06:38,567 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:06:38,773 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:06:38,775 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:06:39,200 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:06:39,470 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:06:39,471 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 12:06:39,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:39 BoogieIcfgContainer [2023-11-26 12:06:39,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:06:39,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:06:39,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:06:39,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:06:39,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:06:37" (1/3) ... [2023-11-26 12:06:39,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b547b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:39, skipping insertion in model container [2023-11-26 12:06:39,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (2/3) ... [2023-11-26 12:06:39,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b547b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:39, skipping insertion in model container [2023-11-26 12:06:39,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:39" (3/3) ... [2023-11-26 12:06:39,484 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.opt.i [2023-11-26 12:06:39,496 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:06:39,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:06:39,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-26 12:06:39,509 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:06:39,640 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:06:39,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2023-11-26 12:06:39,793 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2023-11-26 12:06:39,793 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:06:39,796 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 7. Compared 123 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. [2023-11-26 12:06:39,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2023-11-26 12:06:39,809 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 48 transitions, 108 flow [2023-11-26 12:06:39,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:06:39,835 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;@793bc0f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:06:39,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-26 12:06:39,847 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:06:39,848 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-26 12:06:39,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:06:39,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:39,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:39,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 12:06:39,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:39,855 INFO L85 PathProgramCache]: Analyzing trace with hash -945747194, now seen corresponding path program 1 times [2023-11-26 12:06:39,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:39,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244018977] [2023-11-26 12:06:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:40,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:40,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244018977] [2023-11-26 12:06:40,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244018977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:40,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:40,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:06:40,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967686987] [2023-11-26 12:06:40,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:40,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:40,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:40,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:40,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:40,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-26 12:06:40,317 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) [2023-11-26 12:06:40,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:40,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-26 12:06:40,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:44,118 INFO L124 PetriNetUnfolderBase]: 16257/21811 cut-off events. [2023-11-26 12:06:44,118 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-11-26 12:06:44,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43877 conditions, 21811 events. 16257/21811 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 1904. Compared 143260 event pairs, 8007 based on Foata normal form. 0/15041 useless extension candidates. Maximal degree in co-relation 43865. Up to 21703 conditions per place. [2023-11-26 12:06:44,403 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 45 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-11-26 12:06:44,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 253 flow [2023-11-26 12:06:44,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:44,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:06:44,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2023-11-26 12:06:44,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7564102564102564 [2023-11-26 12:06:44,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2023-11-26 12:06:44,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2023-11-26 12:06:44,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:44,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2023-11-26 12:06:44,426 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) [2023-11-26 12:06:44,429 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) [2023-11-26 12:06:44,430 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) [2023-11-26 12:06:44,432 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 108 flow. Second operand 3 states and 118 transitions. [2023-11-26 12:06:44,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 253 flow [2023-11-26 12:06:44,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:06:44,441 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 151 flow [2023-11-26 12:06:44,443 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} [2023-11-26 12:06:44,447 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-11-26 12:06:44,447 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 151 flow [2023-11-26 12:06:44,448 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) [2023-11-26 12:06:44,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:44,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:44,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:06:44,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 12:06:44,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:44,450 INFO L85 PathProgramCache]: Analyzing trace with hash 519175076, now seen corresponding path program 1 times [2023-11-26 12:06:44,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:44,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133463099] [2023-11-26 12:06:44,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:44,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:44,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:44,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133463099] [2023-11-26 12:06:44,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133463099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:44,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:44,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:44,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297137527] [2023-11-26 12:06:44,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:44,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:44,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:44,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:44,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:44,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-26 12:06:44,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2023-11-26 12:06:44,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:44,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-26 12:06:44,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:46,363 INFO L124 PetriNetUnfolderBase]: 7927/10753 cut-off events. [2023-11-26 12:06:46,364 INFO L125 PetriNetUnfolderBase]: For 919/919 co-relation queries the response was YES. [2023-11-26 12:06:46,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26152 conditions, 10753 events. 7927/10753 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 65908 event pairs, 3403 based on Foata normal form. 0/8607 useless extension candidates. Maximal degree in co-relation 26141. Up to 10644 conditions per place. [2023-11-26 12:06:46,462 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 41 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-11-26 12:06:46,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 261 flow [2023-11-26 12:06:46,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:06:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2023-11-26 12:06:46,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-26 12:06:46,478 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 130 transitions. [2023-11-26 12:06:46,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 130 transitions. [2023-11-26 12:06:46,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:46,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 130 transitions. [2023-11-26 12:06:46,484 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) [2023-11-26 12:06:46,491 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) [2023-11-26 12:06:46,492 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) [2023-11-26 12:06:46,493 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 151 flow. Second operand 4 states and 130 transitions. [2023-11-26 12:06:46,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 261 flow [2023-11-26 12:06:46,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:06:46,498 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 140 flow [2023-11-26 12:06:46,499 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} [2023-11-26 12:06:46,500 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-26 12:06:46,501 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 140 flow [2023-11-26 12:06:46,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2023-11-26 12:06:46,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:46,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:46,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:06:46,503 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 12:06:46,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:46,504 INFO L85 PathProgramCache]: Analyzing trace with hash 519175077, now seen corresponding path program 1 times [2023-11-26 12:06:46,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:46,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632367563] [2023-11-26 12:06:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:46,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:46,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:46,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632367563] [2023-11-26 12:06:46,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632367563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:46,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:46,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:46,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890521651] [2023-11-26 12:06:46,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:46,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:46,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:46,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:46,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:46,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-26 12:06:46,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2023-11-26 12:06:46,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:46,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-26 12:06:46,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:47,947 INFO L124 PetriNetUnfolderBase]: 5445/7511 cut-off events. [2023-11-26 12:06:47,947 INFO L125 PetriNetUnfolderBase]: For 1004/1004 co-relation queries the response was YES. [2023-11-26 12:06:47,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17825 conditions, 7511 events. 5445/7511 cut-off events. For 1004/1004 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 43936 event pairs, 1127 based on Foata normal form. 0/6485 useless extension candidates. Maximal degree in co-relation 17813. Up to 6753 conditions per place. [2023-11-26 12:06:48,016 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 57 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2023-11-26 12:06:48,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 358 flow [2023-11-26 12:06:48,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:06:48,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2023-11-26 12:06:48,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7211538461538461 [2023-11-26 12:06:48,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 150 transitions. [2023-11-26 12:06:48,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 150 transitions. [2023-11-26 12:06:48,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:48,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 150 transitions. [2023-11-26 12:06:48,022 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) [2023-11-26 12:06:48,023 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) [2023-11-26 12:06:48,024 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) [2023-11-26 12:06:48,024 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 140 flow. Second operand 4 states and 150 transitions. [2023-11-26 12:06:48,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 358 flow [2023-11-26 12:06:48,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:06:48,028 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 192 flow [2023-11-26 12:06:48,029 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} [2023-11-26 12:06:48,030 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-11-26 12:06:48,030 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 192 flow [2023-11-26 12:06:48,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2023-11-26 12:06:48,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:48,031 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] [2023-11-26 12:06:48,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:06:48,031 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 12:06:48,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:48,032 INFO L85 PathProgramCache]: Analyzing trace with hash -589784512, now seen corresponding path program 1 times [2023-11-26 12:06:48,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:48,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927763118] [2023-11-26 12:06:48,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:48,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:48,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:48,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927763118] [2023-11-26 12:06:48,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927763118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:48,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:48,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:48,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392202208] [2023-11-26 12:06:48,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:48,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:06:48,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:48,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:06:48,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:06:48,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-26 12:06:48,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:48,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:48,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-26 12:06:48,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:49,218 INFO L124 PetriNetUnfolderBase]: 3561/4955 cut-off events. [2023-11-26 12:06:49,218 INFO L125 PetriNetUnfolderBase]: For 2451/2451 co-relation queries the response was YES. [2023-11-26 12:06:49,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13512 conditions, 4955 events. 3561/4955 cut-off events. For 2451/2451 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 27240 event pairs, 183 based on Foata normal form. 0/4745 useless extension candidates. Maximal degree in co-relation 13499. Up to 2601 conditions per place. [2023-11-26 12:06:49,279 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 67 selfloop transitions, 13 changer transitions 4/100 dead transitions. [2023-11-26 12:06:49,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 100 transitions, 484 flow [2023-11-26 12:06:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:06:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:06:49,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2023-11-26 12:06:49,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7230769230769231 [2023-11-26 12:06:49,282 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 188 transitions. [2023-11-26 12:06:49,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 188 transitions. [2023-11-26 12:06:49,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:49,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 188 transitions. [2023-11-26 12:06:49,284 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) [2023-11-26 12:06:49,285 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) [2023-11-26 12:06:49,286 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) [2023-11-26 12:06:49,286 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 192 flow. Second operand 5 states and 188 transitions. [2023-11-26 12:06:49,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 100 transitions, 484 flow [2023-11-26 12:06:49,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 466 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-26 12:06:49,293 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 216 flow [2023-11-26 12:06:49,294 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} [2023-11-26 12:06:49,295 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2023-11-26 12:06:49,295 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 216 flow [2023-11-26 12:06:49,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:49,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:06:49,296 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] [2023-11-26 12:06:49,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:06:49,297 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-26 12:06:49,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:49,297 INFO L85 PathProgramCache]: Analyzing trace with hash 375421720, now seen corresponding path program 1 times [2023-11-26 12:06:49,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:49,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818153149] [2023-11-26 12:06:49,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:49,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:49,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:49,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818153149] [2023-11-26 12:06:49,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818153149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:49,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:49,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:06:49,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219358960] [2023-11-26 12:06:49,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:49,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:49,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:49,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:49,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:49,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2023-11-26 12:06:49,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2023-11-26 12:06:49,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:06:49,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2023-11-26 12:06:49,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:06:50,395 INFO L124 PetriNetUnfolderBase]: 2745/3851 cut-off events. [2023-11-26 12:06:50,396 INFO L125 PetriNetUnfolderBase]: For 4691/4691 co-relation queries the response was YES. [2023-11-26 12:06:50,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11263 conditions, 3851 events. 2745/3851 cut-off events. For 4691/4691 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 21560 event pairs, 39 based on Foata normal form. 192/4025 useless extension candidates. Maximal degree in co-relation 11249. Up to 1596 conditions per place. [2023-11-26 12:06:50,415 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 0 selfloop transitions, 0 changer transitions 92/92 dead transitions. [2023-11-26 12:06:50,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 92 transitions, 436 flow [2023-11-26 12:06:50,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:06:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2023-11-26 12:06:50,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2023-11-26 12:06:50,418 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 200 transitions. [2023-11-26 12:06:50,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 200 transitions. [2023-11-26 12:06:50,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:06:50,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 200 transitions. [2023-11-26 12:06:50,420 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) [2023-11-26 12:06:50,421 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) [2023-11-26 12:06:50,422 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) [2023-11-26 12:06:50,422 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 216 flow. Second operand 6 states and 200 transitions. [2023-11-26 12:06:50,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 92 transitions, 436 flow [2023-11-26 12:06:50,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 92 transitions, 381 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-26 12:06:50,467 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-11-26 12:06:50,467 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} [2023-11-26 12:06:50,468 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-26 12:06:50,468 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-11-26 12:06:50,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2023-11-26 12:06:50,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-11-26 12:06:50,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-11-26 12:06:50,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-11-26 12:06:50,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-11-26 12:06:50,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-11-26 12:06:50,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-11-26 12:06:50,474 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-11-26 12:06:50,474 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-11-26 12:06:50,474 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2023-11-26 12:06:50,474 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2023-11-26 12:06:50,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-11-26 12:06:50,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-11-26 12:06:50,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-11-26 12:06:50,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-11-26 12:06:50,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-11-26 12:06:50,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-11-26 12:06:50,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-11-26 12:06:50,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-11-26 12:06:50,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-11-26 12:06:50,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-11-26 12:06:50,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:06:50,478 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-26 12:06:50,485 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 12:06:50,485 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:06:50,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:06:50 BasicIcfg [2023-11-26 12:06:50,492 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:06:50,493 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:06:50,493 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:06:50,493 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:06:50,494 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:39" (3/4) ... [2023-11-26 12:06:50,495 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 12:06:50,499 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-26 12:06:50,499 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-26 12:06:50,499 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-26 12:06:50,499 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-26 12:06:50,508 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2023-11-26 12:06:50,508 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-26 12:06:50,509 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-26 12:06:50,509 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 12:06:50,615 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:06:50,615 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 12:06:50,616 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:06:50,616 INFO L158 Benchmark]: Toolchain (without parser) took 13059.14ms. Allocated memory was 134.2MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 87.5MB in the beginning and 478.5MB in the end (delta: -391.0MB). Peak memory consumption was 930.4MB. Max. memory is 16.1GB. [2023-11-26 12:06:50,617 INFO L158 Benchmark]: CDTParser took 1.37ms. Allocated memory is still 134.2MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:06:50,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.82ms. Allocated memory is still 134.2MB. Free memory was 87.5MB in the beginning and 63.5MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-26 12:06:50,617 INFO L158 Benchmark]: Boogie Procedure Inliner took 130.40ms. Allocated memory is still 134.2MB. Free memory was 63.5MB in the beginning and 103.5MB in the end (delta: -40.0MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2023-11-26 12:06:50,618 INFO L158 Benchmark]: Boogie Preprocessor took 135.40ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 103.5MB in the beginning and 142.2MB in the end (delta: -38.7MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2023-11-26 12:06:50,618 INFO L158 Benchmark]: RCFGBuilder took 1005.62ms. Allocated memory is still 172.0MB. Free memory was 142.2MB in the beginning and 87.7MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2023-11-26 12:06:50,619 INFO L158 Benchmark]: TraceAbstraction took 11018.00ms. Allocated memory was 172.0MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 86.8MB in the beginning and 483.7MB in the end (delta: -396.9MB). Peak memory consumption was 884.1MB. Max. memory is 16.1GB. [2023-11-26 12:06:50,619 INFO L158 Benchmark]: Witness Printer took 123.13ms. Allocated memory is still 1.5GB. Free memory was 483.7MB in the beginning and 478.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 12:06:50,621 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37ms. Allocated memory is still 134.2MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.82ms. Allocated memory is still 134.2MB. Free memory was 87.5MB in the beginning and 63.5MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 130.40ms. Allocated memory is still 134.2MB. Free memory was 63.5MB in the beginning and 103.5MB in the end (delta: -40.0MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 135.40ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 103.5MB in the beginning and 142.2MB in the end (delta: -38.7MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * RCFGBuilder took 1005.62ms. Allocated memory is still 172.0MB. Free memory was 142.2MB in the beginning and 87.7MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11018.00ms. Allocated memory was 172.0MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 86.8MB in the beginning and 483.7MB in the end (delta: -396.9MB). Peak memory consumption was 884.1MB. Max. memory is 16.1GB. * Witness Printer took 123.13ms. Allocated memory is still 1.5GB. Free memory was 483.7MB in the beginning and 478.5MB 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: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 775]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 775]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 795]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 795]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 831]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 831]: 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: 10.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 280 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 270 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, 0.7s 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! [2023-11-26 12:06:50,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db482ee-55b3-41b5-a2a2-0629302fa052/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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