./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --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_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya --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 c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:35:30,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:35:30,447 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 23:35:30,451 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:35:30,451 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:35:30,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:35:30,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:35:30,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:35:30,474 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:35:30,475 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:35:30,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:35:30,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:35:30,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:35:30,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:35:30,478 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:35:30,478 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:35:30,479 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:35:30,479 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:35:30,480 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:35:30,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:35:30,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:35:30,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:35:30,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:35:30,482 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:35:30,482 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 23:35:30,483 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:35:30,483 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:35:30,483 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:35:30,484 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:35:30,484 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:35:30,484 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:35:30,485 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:35:30,485 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:35:30,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:35:30,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:35:30,486 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:35:30,486 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:35:30,486 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:35:30,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:35:30,486 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:35:30,486 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:35:30,487 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:35:30,487 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:35:30,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:35:30,487 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_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2023-11-28 23:35:30,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:35:30,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:35:30,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:35:30,729 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:35:30,730 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:35:30,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2023-11-28 23:35:33,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:35:33,604 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:35:33,604 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2023-11-28 23:35:33,612 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/data/e75420173/c5ba5683e99a4adf96934f8f5887607e/FLAG0b1679f10 [2023-11-28 23:35:33,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/data/e75420173/c5ba5683e99a4adf96934f8f5887607e [2023-11-28 23:35:33,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:35:33,631 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:35:33,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:35:33,633 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:35:33,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:35:33,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22582ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33, skipping insertion in model container [2023-11-28 23:35:33,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,665 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:35:33,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:35:33,834 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:35:33,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:35:33,871 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:35:33,871 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:35:33,877 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:35:33,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33 WrapperNode [2023-11-28 23:35:33,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:35:33,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:35:33,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:35:33,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:35:33,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,918 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 164 [2023-11-28 23:35:33,919 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:35:33,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:35:33,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:35:33,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:35:33,928 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,932 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,951 INFO L175 MemorySlicer]: Split 17 memory accesses to 5 slices as follows [2, 2, 2, 2, 9]. 53 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 4]. [2023-11-28 23:35:33,952 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,952 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,969 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:35:33,976 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:35:33,976 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:35:33,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:35:33,977 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33" (1/1) ... [2023-11-28 23:35:33,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:35:33,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:34,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:35:34,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:35:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:35:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:35:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 23:35:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 23:35:34,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 23:35:34,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 23:35:34,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-28 23:35:34,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 23:35:34,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 23:35:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 23:35:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 23:35:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-28 23:35:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-28 23:35:34,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-28 23:35:34,050 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-28 23:35:34,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-28 23:35:34,050 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-28 23:35:34,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-28 23:35:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:35:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:35:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:35:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 23:35:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 23:35:34,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-28 23:35:34,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-28 23:35:34,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 23:35:34,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:35:34,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:35:34,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:35:34,054 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:35:34,162 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:35:34,164 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:35:34,496 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:35:34,780 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:35:34,781 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-28 23:35:34,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:35:34 BoogieIcfgContainer [2023-11-28 23:35:34,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:35:34,783 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:35:34,783 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:35:34,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:35:34,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:35:33" (1/3) ... [2023-11-28 23:35:34,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d47125d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:35:34, skipping insertion in model container [2023-11-28 23:35:34,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:35:33" (2/3) ... [2023-11-28 23:35:34,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d47125d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:35:34, skipping insertion in model container [2023-11-28 23:35:34,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:35:34" (3/3) ... [2023-11-28 23:35:34,789 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2023-11-28 23:35:34,798 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:35:34,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:35:34,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-28 23:35:34,810 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:35:34,866 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-28 23:35:34,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 65 transitions, 151 flow [2023-11-28 23:35:34,935 INFO L124 PetriNetUnfolderBase]: 7/62 cut-off events. [2023-11-28 23:35:34,936 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-28 23:35:34,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 7/62 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-28 23:35:34,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 65 transitions, 151 flow [2023-11-28 23:35:34,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 60 transitions, 135 flow [2023-11-28 23:35:34,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:35:34,961 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;@6ce581ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:35:34,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-28 23:35:34,965 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:35:34,966 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-28 23:35:34,966 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:35:34,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:34,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-28 23:35:34,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:34,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash 635145, now seen corresponding path program 1 times [2023-11-28 23:35:34,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:34,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532332778] [2023-11-28 23:35:34,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:34,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:35,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:35,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532332778] [2023-11-28 23:35:35,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532332778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:35:35,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:35:35,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:35:35,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277138340] [2023-11-28 23:35:35,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:35:35,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:35:35,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:35,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:35:35,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:35:35,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 65 [2023-11-28 23:35:35,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2023-11-28 23:35:35,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:35,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 65 [2023-11-28 23:35:35,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:35,628 INFO L124 PetriNetUnfolderBase]: 779/1384 cut-off events. [2023-11-28 23:35:35,628 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-28 23:35:35,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2574 conditions, 1384 events. 779/1384 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7349 event pairs, 579 based on Foata normal form. 3/1061 useless extension candidates. Maximal degree in co-relation 2102. Up to 1085 conditions per place. [2023-11-28 23:35:35,645 INFO L140 encePairwiseOnDemand]: 49/65 looper letters, 39 selfloop transitions, 10 changer transitions 0/69 dead transitions. [2023-11-28 23:35:35,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 69 transitions, 251 flow [2023-11-28 23:35:35,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:35:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:35:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2023-11-28 23:35:35,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5653846153846154 [2023-11-28 23:35:35,670 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 147 transitions. [2023-11-28 23:35:35,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 147 transitions. [2023-11-28 23:35:35,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:35,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 147 transitions. [2023-11-28 23:35:35,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2023-11-28 23:35:35,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:35:35,682 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:35:35,683 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 135 flow. Second operand 4 states and 147 transitions. [2023-11-28 23:35:35,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 69 transitions, 251 flow [2023-11-28 23:35:35,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 242 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:35:35,693 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 214 flow [2023-11-28 23:35:35,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-11-28 23:35:35,698 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 1 predicate places. [2023-11-28 23:35:35,699 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 214 flow [2023-11-28 23:35:35,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2023-11-28 23:35:35,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:35,699 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-28 23:35:35,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:35:35,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:35,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:35,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1742363929, now seen corresponding path program 1 times [2023-11-28 23:35:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:35,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078744649] [2023-11-28 23:35:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:35,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:35,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:35,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078744649] [2023-11-28 23:35:35,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078744649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:35:35,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038104143] [2023-11-28 23:35:35,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:35,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:35,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:35,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:35,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:35:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:35,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:35:35,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:35,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:35:35,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038104143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:35:35,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:35:35,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-28 23:35:35,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451131665] [2023-11-28 23:35:35,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:35:35,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:35:35,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:35,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:35:35,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:35:36,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 65 [2023-11-28 23:35:36,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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) [2023-11-28 23:35:36,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:36,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 65 [2023-11-28 23:35:36,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:36,349 INFO L124 PetriNetUnfolderBase]: 779/1381 cut-off events. [2023-11-28 23:35:36,350 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-28 23:35:36,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 1381 events. 779/1381 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7374 event pairs, 579 based on Foata normal form. 3/1063 useless extension candidates. Maximal degree in co-relation 2487. Up to 1070 conditions per place. [2023-11-28 23:35:36,363 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 29 selfloop transitions, 17 changer transitions 0/66 dead transitions. [2023-11-28 23:35:36,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 294 flow [2023-11-28 23:35:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:35:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:35:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2023-11-28 23:35:36,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794871794871795 [2023-11-28 23:35:36,367 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2023-11-28 23:35:36,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2023-11-28 23:35:36,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:36,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2023-11-28 23:35:36,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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) [2023-11-28 23:35:36,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2023-11-28 23:35:36,371 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2023-11-28 23:35:36,371 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 214 flow. Second operand 6 states and 187 transitions. [2023-11-28 23:35:36,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 294 flow [2023-11-28 23:35:36,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:35:36,375 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 236 flow [2023-11-28 23:35:36,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-11-28 23:35:36,376 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2023-11-28 23:35:36,376 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 236 flow [2023-11-28 23:35:36,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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) [2023-11-28 23:35:36,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:36,377 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-28 23:35:36,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:35:36,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:36,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:36,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:36,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1821292417, now seen corresponding path program 1 times [2023-11-28 23:35:36,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:36,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139493505] [2023-11-28 23:35:36,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:36,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:36,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:36,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139493505] [2023-11-28 23:35:36,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139493505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:35:36,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286761230] [2023-11-28 23:35:36,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:36,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:36,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:36,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:36,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:35:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:36,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:35:36,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:36,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:35:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:36,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286761230] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:35:36,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:35:36,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-28 23:35:36,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053214259] [2023-11-28 23:35:36,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:35:36,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:35:36,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:36,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:35:36,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:35:36,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 65 [2023-11-28 23:35:36,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 236 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 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) [2023-11-28 23:35:36,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:36,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 65 [2023-11-28 23:35:36,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:37,297 INFO L124 PetriNetUnfolderBase]: 788/1417 cut-off events. [2023-11-28 23:35:37,297 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-11-28 23:35:37,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2701 conditions, 1417 events. 788/1417 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7684 event pairs, 579 based on Foata normal form. 9/1105 useless extension candidates. Maximal degree in co-relation 2489. Up to 1085 conditions per place. [2023-11-28 23:35:37,311 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 36 selfloop transitions, 37 changer transitions 0/93 dead transitions. [2023-11-28 23:35:37,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 556 flow [2023-11-28 23:35:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:35:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:35:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 312 transitions. [2023-11-28 23:35:37,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2023-11-28 23:35:37,316 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 312 transitions. [2023-11-28 23:35:37,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 312 transitions. [2023-11-28 23:35:37,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:37,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 312 transitions. [2023-11-28 23:35:37,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 31.2) internal successors, (312), 10 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) [2023-11-28 23:35:37,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 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) [2023-11-28 23:35:37,321 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 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) [2023-11-28 23:35:37,321 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 236 flow. Second operand 10 states and 312 transitions. [2023-11-28 23:35:37,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 556 flow [2023-11-28 23:35:37,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 473 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-28 23:35:37,326 INFO L231 Difference]: Finished difference. Result has 73 places, 93 transitions, 451 flow [2023-11-28 23:35:37,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=451, PETRI_PLACES=73, PETRI_TRANSITIONS=93} [2023-11-28 23:35:37,327 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2023-11-28 23:35:37,328 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 93 transitions, 451 flow [2023-11-28 23:35:37,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 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) [2023-11-28 23:35:37,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:37,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:37,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:35:37,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:37,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:37,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:37,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1366595988, now seen corresponding path program 1 times [2023-11-28 23:35:37,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:37,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064727867] [2023-11-28 23:35:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:37,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:37,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:37,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064727867] [2023-11-28 23:35:37,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064727867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:35:37,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:35:37,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:35:37,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796816178] [2023-11-28 23:35:37,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:35:37,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:35:37,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:37,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:35:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:35:37,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2023-11-28 23:35:37,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 93 transitions, 451 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2023-11-28 23:35:37,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:37,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2023-11-28 23:35:37,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:37,987 INFO L124 PetriNetUnfolderBase]: 1543/2554 cut-off events. [2023-11-28 23:35:37,988 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-11-28 23:35:37,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 2554 events. 1543/2554 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14678 event pairs, 588 based on Foata normal form. 74/2071 useless extension candidates. Maximal degree in co-relation 4813. Up to 1646 conditions per place. [2023-11-28 23:35:38,014 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 101 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2023-11-28 23:35:38,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 126 transitions, 733 flow [2023-11-28 23:35:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:35:38,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:35:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2023-11-28 23:35:38,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6884615384615385 [2023-11-28 23:35:38,017 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 179 transitions. [2023-11-28 23:35:38,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 179 transitions. [2023-11-28 23:35:38,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:38,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 179 transitions. [2023-11-28 23:35:38,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2023-11-28 23:35:38,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:35:38,019 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:35:38,019 INFO L175 Difference]: Start difference. First operand has 73 places, 93 transitions, 451 flow. Second operand 4 states and 179 transitions. [2023-11-28 23:35:38,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 126 transitions, 733 flow [2023-11-28 23:35:38,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 126 transitions, 696 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-28 23:35:38,025 INFO L231 Difference]: Finished difference. Result has 76 places, 96 transitions, 443 flow [2023-11-28 23:35:38,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=443, PETRI_PLACES=76, PETRI_TRANSITIONS=96} [2023-11-28 23:35:38,027 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2023-11-28 23:35:38,027 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 96 transitions, 443 flow [2023-11-28 23:35:38,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2023-11-28 23:35:38,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:38,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:38,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:35:38,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:38,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:38,028 INFO L85 PathProgramCache]: Analyzing trace with hash 911521752, now seen corresponding path program 1 times [2023-11-28 23:35:38,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:38,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672049912] [2023-11-28 23:35:38,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:38,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:38,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:38,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672049912] [2023-11-28 23:35:38,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672049912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:35:38,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:35:38,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:35:38,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150929524] [2023-11-28 23:35:38,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:35:38,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:35:38,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:38,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:35:38,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:35:38,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 65 [2023-11-28 23:35:38,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 96 transitions, 443 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2023-11-28 23:35:38,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:38,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 65 [2023-11-28 23:35:38,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:38,507 INFO L124 PetriNetUnfolderBase]: 1695/3165 cut-off events. [2023-11-28 23:35:38,507 INFO L125 PetriNetUnfolderBase]: For 1010/1066 co-relation queries the response was YES. [2023-11-28 23:35:38,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6684 conditions, 3165 events. 1695/3165 cut-off events. For 1010/1066 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 20870 event pairs, 798 based on Foata normal form. 0/2661 useless extension candidates. Maximal degree in co-relation 6588. Up to 1727 conditions per place. [2023-11-28 23:35:38,541 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 89 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-11-28 23:35:38,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 115 transitions, 687 flow [2023-11-28 23:35:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:35:38,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:35:38,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2023-11-28 23:35:38,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7128205128205128 [2023-11-28 23:35:38,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 139 transitions. [2023-11-28 23:35:38,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 139 transitions. [2023-11-28 23:35:38,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:38,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 139 transitions. [2023-11-28 23:35:38,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2023-11-28 23:35:38,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 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) [2023-11-28 23:35:38,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 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) [2023-11-28 23:35:38,545 INFO L175 Difference]: Start difference. First operand has 76 places, 96 transitions, 443 flow. Second operand 3 states and 139 transitions. [2023-11-28 23:35:38,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 115 transitions, 687 flow [2023-11-28 23:35:38,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 115 transitions, 681 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:35:38,555 INFO L231 Difference]: Finished difference. Result has 78 places, 98 transitions, 461 flow [2023-11-28 23:35:38,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=78, PETRI_TRANSITIONS=98} [2023-11-28 23:35:38,556 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 15 predicate places. [2023-11-28 23:35:38,556 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 98 transitions, 461 flow [2023-11-28 23:35:38,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2023-11-28 23:35:38,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:38,557 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:38,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:35:38,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:38,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash -265407620, now seen corresponding path program 1 times [2023-11-28 23:35:38,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:38,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700882494] [2023-11-28 23:35:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:38,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:35:38,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:38,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700882494] [2023-11-28 23:35:38,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700882494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:35:38,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:35:38,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:35:38,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587396256] [2023-11-28 23:35:38,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:35:38,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:35:38,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:35:38,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:35:38,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 65 [2023-11-28 23:35:38,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 98 transitions, 461 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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) [2023-11-28 23:35:38,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:38,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 65 [2023-11-28 23:35:38,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:39,335 INFO L124 PetriNetUnfolderBase]: 2410/4122 cut-off events. [2023-11-28 23:35:39,335 INFO L125 PetriNetUnfolderBase]: For 1872/1968 co-relation queries the response was YES. [2023-11-28 23:35:39,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9745 conditions, 4122 events. 2410/4122 cut-off events. For 1872/1968 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 25068 event pairs, 1570 based on Foata normal form. 100/3662 useless extension candidates. Maximal degree in co-relation 9648. Up to 2193 conditions per place. [2023-11-28 23:35:39,371 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 100 selfloop transitions, 18 changer transitions 0/141 dead transitions. [2023-11-28 23:35:39,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 141 transitions, 835 flow [2023-11-28 23:35:39,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:35:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:35:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 259 transitions. [2023-11-28 23:35:39,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6641025641025641 [2023-11-28 23:35:39,373 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 259 transitions. [2023-11-28 23:35:39,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 259 transitions. [2023-11-28 23:35:39,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:39,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 259 transitions. [2023-11-28 23:35:39,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 43.166666666666664) internal successors, (259), 6 states have internal predecessors, (259), 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) [2023-11-28 23:35:39,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2023-11-28 23:35:39,376 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2023-11-28 23:35:39,376 INFO L175 Difference]: Start difference. First operand has 78 places, 98 transitions, 461 flow. Second operand 6 states and 259 transitions. [2023-11-28 23:35:39,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 141 transitions, 835 flow [2023-11-28 23:35:39,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 141 transitions, 826 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:35:39,383 INFO L231 Difference]: Finished difference. Result has 86 places, 102 transitions, 547 flow [2023-11-28 23:35:39,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=86, PETRI_TRANSITIONS=102} [2023-11-28 23:35:39,384 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 23 predicate places. [2023-11-28 23:35:39,384 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 102 transitions, 547 flow [2023-11-28 23:35:39,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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) [2023-11-28 23:35:39,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:39,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:39,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 23:35:39,385 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:39,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:39,386 INFO L85 PathProgramCache]: Analyzing trace with hash -200901861, now seen corresponding path program 1 times [2023-11-28 23:35:39,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:39,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396218074] [2023-11-28 23:35:39,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:39,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:39,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:39,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396218074] [2023-11-28 23:35:39,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396218074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:35:39,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:35:39,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:35:39,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555328645] [2023-11-28 23:35:39,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:35:39,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:35:39,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:39,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:35:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:35:39,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 65 [2023-11-28 23:35:39,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 102 transitions, 547 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:35:39,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:39,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 65 [2023-11-28 23:35:39,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:40,212 INFO L124 PetriNetUnfolderBase]: 3550/6116 cut-off events. [2023-11-28 23:35:40,212 INFO L125 PetriNetUnfolderBase]: For 4011/4059 co-relation queries the response was YES. [2023-11-28 23:35:40,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15097 conditions, 6116 events. 3550/6116 cut-off events. For 4011/4059 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 40067 event pairs, 2137 based on Foata normal form. 256/5861 useless extension candidates. Maximal degree in co-relation 14994. Up to 3852 conditions per place. [2023-11-28 23:35:40,270 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 116 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2023-11-28 23:35:40,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 140 transitions, 937 flow [2023-11-28 23:35:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:35:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:35:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2023-11-28 23:35:40,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6653846153846154 [2023-11-28 23:35:40,272 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 173 transitions. [2023-11-28 23:35:40,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 173 transitions. [2023-11-28 23:35:40,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:40,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 173 transitions. [2023-11-28 23:35:40,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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) [2023-11-28 23:35:40,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:35:40,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:35:40,274 INFO L175 Difference]: Start difference. First operand has 86 places, 102 transitions, 547 flow. Second operand 4 states and 173 transitions. [2023-11-28 23:35:40,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 140 transitions, 937 flow [2023-11-28 23:35:40,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 140 transitions, 921 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-28 23:35:40,283 INFO L231 Difference]: Finished difference. Result has 90 places, 103 transitions, 552 flow [2023-11-28 23:35:40,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=552, PETRI_PLACES=90, PETRI_TRANSITIONS=103} [2023-11-28 23:35:40,284 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 27 predicate places. [2023-11-28 23:35:40,284 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 103 transitions, 552 flow [2023-11-28 23:35:40,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:35:40,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:40,284 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:40,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 23:35:40,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:40,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:40,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2117752472, now seen corresponding path program 1 times [2023-11-28 23:35:40,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:40,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068275486] [2023-11-28 23:35:40,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:40,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:40,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:40,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068275486] [2023-11-28 23:35:40,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068275486] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:35:40,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024583344] [2023-11-28 23:35:40,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:40,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:40,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:40,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:40,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:35:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:40,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:35:40,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:35:40,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:35:40,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024583344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:35:40,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:35:40,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-11-28 23:35:40,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398297384] [2023-11-28 23:35:40,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:35:40,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:35:40,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:40,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:35:40,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:35:40,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 65 [2023-11-28 23:35:40,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 103 transitions, 552 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2023-11-28 23:35:40,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:40,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 65 [2023-11-28 23:35:40,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:41,225 INFO L124 PetriNetUnfolderBase]: 2278/3983 cut-off events. [2023-11-28 23:35:41,225 INFO L125 PetriNetUnfolderBase]: For 3658/3704 co-relation queries the response was YES. [2023-11-28 23:35:41,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10271 conditions, 3983 events. 2278/3983 cut-off events. For 3658/3704 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 23565 event pairs, 1605 based on Foata normal form. 46/3521 useless extension candidates. Maximal degree in co-relation 10166. Up to 2756 conditions per place. [2023-11-28 23:35:41,263 INFO L140 encePairwiseOnDemand]: 55/65 looper letters, 87 selfloop transitions, 18 changer transitions 2/130 dead transitions. [2023-11-28 23:35:41,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 130 transitions, 851 flow [2023-11-28 23:35:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:35:41,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:35:41,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 244 transitions. [2023-11-28 23:35:41,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6256410256410256 [2023-11-28 23:35:41,265 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 244 transitions. [2023-11-28 23:35:41,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 244 transitions. [2023-11-28 23:35:41,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:41,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 244 transitions. [2023-11-28 23:35:41,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 40.666666666666664) internal successors, (244), 6 states have internal predecessors, (244), 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) [2023-11-28 23:35:41,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2023-11-28 23:35:41,268 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2023-11-28 23:35:41,268 INFO L175 Difference]: Start difference. First operand has 90 places, 103 transitions, 552 flow. Second operand 6 states and 244 transitions. [2023-11-28 23:35:41,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 130 transitions, 851 flow [2023-11-28 23:35:41,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 130 transitions, 841 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:35:41,280 INFO L231 Difference]: Finished difference. Result has 95 places, 105 transitions, 604 flow [2023-11-28 23:35:41,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=604, PETRI_PLACES=95, PETRI_TRANSITIONS=105} [2023-11-28 23:35:41,281 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 32 predicate places. [2023-11-28 23:35:41,281 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 105 transitions, 604 flow [2023-11-28 23:35:41,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2023-11-28 23:35:41,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:41,282 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-28 23:35:41,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-28 23:35:41,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:41,483 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:41,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:41,484 INFO L85 PathProgramCache]: Analyzing trace with hash -594876785, now seen corresponding path program 2 times [2023-11-28 23:35:41,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:41,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349166976] [2023-11-28 23:35:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:41,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:41,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:41,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349166976] [2023-11-28 23:35:41,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349166976] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:35:41,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518398366] [2023-11-28 23:35:41,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:35:41,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:41,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:41,630 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:41,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:35:41,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:35:41,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:35:41,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:35:41,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 23:35:41,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:35:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 23:35:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518398366] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:35:41,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:35:41,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-28 23:35:41,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005557407] [2023-11-28 23:35:41,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:35:41,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 23:35:41,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 23:35:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:35:41,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 65 [2023-11-28 23:35:41,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 105 transitions, 604 flow. Second operand has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 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) [2023-11-28 23:35:41,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:41,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 65 [2023-11-28 23:35:41,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:42,588 INFO L124 PetriNetUnfolderBase]: 1894/3723 cut-off events. [2023-11-28 23:35:42,589 INFO L125 PetriNetUnfolderBase]: For 3507/3520 co-relation queries the response was YES. [2023-11-28 23:35:42,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9943 conditions, 3723 events. 1894/3723 cut-off events. For 3507/3520 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 25002 event pairs, 1485 based on Foata normal form. 4/3441 useless extension candidates. Maximal degree in co-relation 9792. Up to 2693 conditions per place. [2023-11-28 23:35:42,611 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 42 selfloop transitions, 50 changer transitions 0/113 dead transitions. [2023-11-28 23:35:42,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 113 transitions, 845 flow [2023-11-28 23:35:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 23:35:42,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-28 23:35:42,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 637 transitions. [2023-11-28 23:35:42,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2023-11-28 23:35:42,615 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 637 transitions. [2023-11-28 23:35:42,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 637 transitions. [2023-11-28 23:35:42,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:42,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 637 transitions. [2023-11-28 23:35:42,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 26.541666666666668) internal successors, (637), 24 states have internal predecessors, (637), 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) [2023-11-28 23:35:42,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 65.0) internal successors, (1625), 25 states have internal predecessors, (1625), 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) [2023-11-28 23:35:42,622 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 65.0) internal successors, (1625), 25 states have internal predecessors, (1625), 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) [2023-11-28 23:35:42,622 INFO L175 Difference]: Start difference. First operand has 95 places, 105 transitions, 604 flow. Second operand 24 states and 637 transitions. [2023-11-28 23:35:42,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 113 transitions, 845 flow [2023-11-28 23:35:42,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 113 transitions, 811 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 23:35:42,630 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 751 flow [2023-11-28 23:35:42,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=751, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2023-11-28 23:35:42,632 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 53 predicate places. [2023-11-28 23:35:42,632 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 751 flow [2023-11-28 23:35:42,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 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) [2023-11-28 23:35:42,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:42,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:42,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:35:42,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:42,833 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:42,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:42,834 INFO L85 PathProgramCache]: Analyzing trace with hash -299812369, now seen corresponding path program 1 times [2023-11-28 23:35:42,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:42,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614790800] [2023-11-28 23:35:42,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:42,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:35:42,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:42,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614790800] [2023-11-28 23:35:42,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614790800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:35:42,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:35:42,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:35:42,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057832678] [2023-11-28 23:35:42,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:35:42,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:35:42,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:35:42,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:35:42,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 65 [2023-11-28 23:35:42,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 751 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2023-11-28 23:35:42,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:42,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 65 [2023-11-28 23:35:42,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:43,831 INFO L124 PetriNetUnfolderBase]: 4270/7604 cut-off events. [2023-11-28 23:35:43,832 INFO L125 PetriNetUnfolderBase]: For 7630/7886 co-relation queries the response was YES. [2023-11-28 23:35:43,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19429 conditions, 7604 events. 4270/7604 cut-off events. For 7630/7886 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 51341 event pairs, 2087 based on Foata normal form. 140/6959 useless extension candidates. Maximal degree in co-relation 19334. Up to 3877 conditions per place. [2023-11-28 23:35:43,871 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 142 selfloop transitions, 3 changer transitions 0/165 dead transitions. [2023-11-28 23:35:43,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 165 transitions, 1287 flow [2023-11-28 23:35:43,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:35:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:35:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2023-11-28 23:35:43,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6807692307692308 [2023-11-28 23:35:43,873 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 177 transitions. [2023-11-28 23:35:43,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 177 transitions. [2023-11-28 23:35:43,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:43,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 177 transitions. [2023-11-28 23:35:43,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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) [2023-11-28 23:35:43,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:35:43,875 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:35:43,875 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 751 flow. Second operand 4 states and 177 transitions. [2023-11-28 23:35:43,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 165 transitions, 1287 flow [2023-11-28 23:35:43,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 165 transitions, 1175 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-11-28 23:35:43,889 INFO L231 Difference]: Finished difference. Result has 112 places, 115 transitions, 661 flow [2023-11-28 23:35:43,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=661, PETRI_PLACES=112, PETRI_TRANSITIONS=115} [2023-11-28 23:35:43,890 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 49 predicate places. [2023-11-28 23:35:43,890 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 115 transitions, 661 flow [2023-11-28 23:35:43,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2023-11-28 23:35:43,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:43,890 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:43,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 23:35:43,890 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:43,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:43,891 INFO L85 PathProgramCache]: Analyzing trace with hash -207467988, now seen corresponding path program 1 times [2023-11-28 23:35:43,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:43,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488363971] [2023-11-28 23:35:43,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:43,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:35:43,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:43,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488363971] [2023-11-28 23:35:43,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488363971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:35:43,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589721278] [2023-11-28 23:35:43,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:43,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:43,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:43,985 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:43,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:35:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:44,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:35:44,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:35:44,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:35:44,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589721278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:35:44,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:35:44,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-28 23:35:44,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845454994] [2023-11-28 23:35:44,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:35:44,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:35:44,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:44,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:35:44,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:35:44,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2023-11-28 23:35:44,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 115 transitions, 661 flow. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 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) [2023-11-28 23:35:44,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:44,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2023-11-28 23:35:44,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:45,000 INFO L124 PetriNetUnfolderBase]: 3102/5234 cut-off events. [2023-11-28 23:35:45,000 INFO L125 PetriNetUnfolderBase]: For 5506/5905 co-relation queries the response was YES. [2023-11-28 23:35:45,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14533 conditions, 5234 events. 3102/5234 cut-off events. For 5506/5905 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 32640 event pairs, 656 based on Foata normal form. 249/4939 useless extension candidates. Maximal degree in co-relation 14442. Up to 1754 conditions per place. [2023-11-28 23:35:45,030 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 157 selfloop transitions, 9 changer transitions 0/188 dead transitions. [2023-11-28 23:35:45,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 188 transitions, 1279 flow [2023-11-28 23:35:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:35:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:35:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2023-11-28 23:35:45,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6692307692307692 [2023-11-28 23:35:45,032 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 261 transitions. [2023-11-28 23:35:45,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 261 transitions. [2023-11-28 23:35:45,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:45,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 261 transitions. [2023-11-28 23:35:45,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 43.5) internal successors, (261), 6 states have internal predecessors, (261), 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) [2023-11-28 23:35:45,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2023-11-28 23:35:45,034 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2023-11-28 23:35:45,034 INFO L175 Difference]: Start difference. First operand has 112 places, 115 transitions, 661 flow. Second operand 6 states and 261 transitions. [2023-11-28 23:35:45,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 188 transitions, 1279 flow [2023-11-28 23:35:45,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 188 transitions, 1269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:35:45,048 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 673 flow [2023-11-28 23:35:45,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=673, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2023-11-28 23:35:45,049 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 52 predicate places. [2023-11-28 23:35:45,049 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 673 flow [2023-11-28 23:35:45,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 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) [2023-11-28 23:35:45,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:45,050 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:45,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:35:45,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:45,251 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:45,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2136539655, now seen corresponding path program 1 times [2023-11-28 23:35:45,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:45,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014592078] [2023-11-28 23:35:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:45,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:35:45,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:45,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014592078] [2023-11-28 23:35:45,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014592078] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:35:45,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794988395] [2023-11-28 23:35:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:45,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:45,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:45,341 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:45,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:35:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:45,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:35:45,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:35:45,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:35:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:35:45,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794988395] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:35:45,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:35:45,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-28 23:35:45,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183908197] [2023-11-28 23:35:45,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:35:45,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:35:45,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:45,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:35:45,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:35:45,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 65 [2023-11-28 23:35:45,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 673 flow. Second operand has 12 states, 12 states have (on average 29.0) internal successors, (348), 12 states have internal predecessors, (348), 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) [2023-11-28 23:35:45,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:45,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 65 [2023-11-28 23:35:45,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:46,684 INFO L124 PetriNetUnfolderBase]: 5438/8716 cut-off events. [2023-11-28 23:35:46,684 INFO L125 PetriNetUnfolderBase]: For 9042/9840 co-relation queries the response was YES. [2023-11-28 23:35:46,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25944 conditions, 8716 events. 5438/8716 cut-off events. For 9042/9840 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 55135 event pairs, 1612 based on Foata normal form. 612/8434 useless extension candidates. Maximal degree in co-relation 25853. Up to 3654 conditions per place. [2023-11-28 23:35:46,746 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 232 selfloop transitions, 15 changer transitions 0/269 dead transitions. [2023-11-28 23:35:46,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 269 transitions, 1767 flow [2023-11-28 23:35:46,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:35:46,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:35:46,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 440 transitions. [2023-11-28 23:35:46,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2023-11-28 23:35:46,748 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 440 transitions. [2023-11-28 23:35:46,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 440 transitions. [2023-11-28 23:35:46,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:46,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 440 transitions. [2023-11-28 23:35:46,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 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) [2023-11-28 23:35:46,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 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) [2023-11-28 23:35:46,751 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 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) [2023-11-28 23:35:46,751 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 673 flow. Second operand 10 states and 440 transitions. [2023-11-28 23:35:46,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 269 transitions, 1767 flow [2023-11-28 23:35:46,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 269 transitions, 1713 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-28 23:35:46,770 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 721 flow [2023-11-28 23:35:46,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=721, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2023-11-28 23:35:46,771 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 59 predicate places. [2023-11-28 23:35:46,771 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 721 flow [2023-11-28 23:35:46,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 29.0) internal successors, (348), 12 states have internal predecessors, (348), 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) [2023-11-28 23:35:46,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:46,772 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:46,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:35:46,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:46,973 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:46,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash 90564164, now seen corresponding path program 1 times [2023-11-28 23:35:46,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:46,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242613612] [2023-11-28 23:35:46,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:46,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-28 23:35:47,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:47,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242613612] [2023-11-28 23:35:47,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242613612] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:35:47,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795713854] [2023-11-28 23:35:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:47,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:47,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:47,196 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:47,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:35:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:47,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:35:47,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-28 23:35:47,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:35:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-28 23:35:47,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795713854] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:35:47,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:35:47,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-11-28 23:35:47,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137776878] [2023-11-28 23:35:47,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:35:47,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 23:35:47,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:47,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 23:35:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-28 23:35:47,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 65 [2023-11-28 23:35:47,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 123 transitions, 721 flow. Second operand has 19 states, 19 states have (on average 24.210526315789473) internal successors, (460), 19 states have internal predecessors, (460), 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) [2023-11-28 23:35:47,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:47,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 65 [2023-11-28 23:35:47,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:49,825 INFO L124 PetriNetUnfolderBase]: 9960/16579 cut-off events. [2023-11-28 23:35:49,826 INFO L125 PetriNetUnfolderBase]: For 21675/22843 co-relation queries the response was YES. [2023-11-28 23:35:49,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47701 conditions, 16579 events. 9960/16579 cut-off events. For 21675/22843 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 118729 event pairs, 7240 based on Foata normal form. 298/15590 useless extension candidates. Maximal degree in co-relation 47606. Up to 6974 conditions per place. [2023-11-28 23:35:49,955 INFO L140 encePairwiseOnDemand]: 55/65 looper letters, 92 selfloop transitions, 57 changer transitions 0/170 dead transitions. [2023-11-28 23:35:49,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 170 transitions, 1258 flow [2023-11-28 23:35:49,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:35:49,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-28 23:35:49,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 343 transitions. [2023-11-28 23:35:49,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797202797202797 [2023-11-28 23:35:49,957 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 343 transitions. [2023-11-28 23:35:49,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 343 transitions. [2023-11-28 23:35:49,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:49,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 343 transitions. [2023-11-28 23:35:49,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 31.181818181818183) internal successors, (343), 11 states have internal predecessors, (343), 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) [2023-11-28 23:35:49,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 65.0) internal successors, (780), 12 states have internal predecessors, (780), 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) [2023-11-28 23:35:49,960 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 65.0) internal successors, (780), 12 states have internal predecessors, (780), 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) [2023-11-28 23:35:49,960 INFO L175 Difference]: Start difference. First operand has 122 places, 123 transitions, 721 flow. Second operand 11 states and 343 transitions. [2023-11-28 23:35:49,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 170 transitions, 1258 flow [2023-11-28 23:35:50,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 170 transitions, 1234 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-28 23:35:50,027 INFO L231 Difference]: Finished difference. Result has 131 places, 131 transitions, 894 flow [2023-11-28 23:35:50,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=894, PETRI_PLACES=131, PETRI_TRANSITIONS=131} [2023-11-28 23:35:50,028 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 68 predicate places. [2023-11-28 23:35:50,028 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 131 transitions, 894 flow [2023-11-28 23:35:50,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.210526315789473) internal successors, (460), 19 states have internal predecessors, (460), 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) [2023-11-28 23:35:50,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:50,029 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:50,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:35:50,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:50,233 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:50,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:50,233 INFO L85 PathProgramCache]: Analyzing trace with hash -412904120, now seen corresponding path program 1 times [2023-11-28 23:35:50,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:50,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100230667] [2023-11-28 23:35:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:50,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:35:50,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:50,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100230667] [2023-11-28 23:35:50,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100230667] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:35:50,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982023938] [2023-11-28 23:35:50,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:50,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:50,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:50,319 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:50,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:35:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:50,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:35:50,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:35:50,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:35:50,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982023938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:35:50,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:35:50,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-28 23:35:50,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857484154] [2023-11-28 23:35:50,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:35:50,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:35:50,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:50,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:35:50,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:35:50,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 65 [2023-11-28 23:35:50,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 131 transitions, 894 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2023-11-28 23:35:50,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:50,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 65 [2023-11-28 23:35:50,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:52,650 INFO L124 PetriNetUnfolderBase]: 14324/20931 cut-off events. [2023-11-28 23:35:52,650 INFO L125 PetriNetUnfolderBase]: For 20194/22315 co-relation queries the response was YES. [2023-11-28 23:35:52,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61438 conditions, 20931 events. 14324/20931 cut-off events. For 20194/22315 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 132897 event pairs, 1671 based on Foata normal form. 1034/21413 useless extension candidates. Maximal degree in co-relation 61334. Up to 8263 conditions per place. [2023-11-28 23:35:52,803 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 156 selfloop transitions, 9 changer transitions 0/183 dead transitions. [2023-11-28 23:35:52,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 183 transitions, 1458 flow [2023-11-28 23:35:52,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:35:52,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:35:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2023-11-28 23:35:52,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6307692307692307 [2023-11-28 23:35:52,805 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 164 transitions. [2023-11-28 23:35:52,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 164 transitions. [2023-11-28 23:35:52,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:52,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 164 transitions. [2023-11-28 23:35:52,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2023-11-28 23:35:52,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:35:52,807 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:35:52,807 INFO L175 Difference]: Start difference. First operand has 131 places, 131 transitions, 894 flow. Second operand 4 states and 164 transitions. [2023-11-28 23:35:52,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 183 transitions, 1458 flow [2023-11-28 23:35:52,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 183 transitions, 1390 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-28 23:35:52,876 INFO L231 Difference]: Finished difference. Result has 128 places, 129 transitions, 836 flow [2023-11-28 23:35:52,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=836, PETRI_PLACES=128, PETRI_TRANSITIONS=129} [2023-11-28 23:35:52,876 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 65 predicate places. [2023-11-28 23:35:52,877 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 129 transitions, 836 flow [2023-11-28 23:35:52,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2023-11-28 23:35:52,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:52,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:52,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-28 23:35:53,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 23:35:53,078 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:53,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:53,078 INFO L85 PathProgramCache]: Analyzing trace with hash -334379824, now seen corresponding path program 1 times [2023-11-28 23:35:53,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:53,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44948156] [2023-11-28 23:35:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:53,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:35:53,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:53,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44948156] [2023-11-28 23:35:53,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44948156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:35:53,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:35:53,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:35:53,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016676382] [2023-11-28 23:35:53,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:35:53,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:35:53,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:53,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:35:53,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:35:53,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 65 [2023-11-28 23:35:53,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 129 transitions, 836 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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) [2023-11-28 23:35:53,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:53,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 65 [2023-11-28 23:35:53,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:55,222 INFO L124 PetriNetUnfolderBase]: 11022/18567 cut-off events. [2023-11-28 23:35:55,222 INFO L125 PetriNetUnfolderBase]: For 27925/28729 co-relation queries the response was YES. [2023-11-28 23:35:55,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52881 conditions, 18567 events. 11022/18567 cut-off events. For 27925/28729 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 134562 event pairs, 7702 based on Foata normal form. 116/16929 useless extension candidates. Maximal degree in co-relation 52782. Up to 14212 conditions per place. [2023-11-28 23:35:55,378 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 80 selfloop transitions, 17 changer transitions 32/150 dead transitions. [2023-11-28 23:35:55,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 150 transitions, 1174 flow [2023-11-28 23:35:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:35:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:35:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2023-11-28 23:35:55,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6128205128205129 [2023-11-28 23:35:55,380 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 239 transitions. [2023-11-28 23:35:55,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 239 transitions. [2023-11-28 23:35:55,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:55,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 239 transitions. [2023-11-28 23:35:55,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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) [2023-11-28 23:35:55,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2023-11-28 23:35:55,383 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2023-11-28 23:35:55,383 INFO L175 Difference]: Start difference. First operand has 128 places, 129 transitions, 836 flow. Second operand 6 states and 239 transitions. [2023-11-28 23:35:55,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 150 transitions, 1174 flow [2023-11-28 23:35:55,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 150 transitions, 1152 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 23:35:55,454 INFO L231 Difference]: Finished difference. Result has 132 places, 118 transitions, 764 flow [2023-11-28 23:35:55,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=764, PETRI_PLACES=132, PETRI_TRANSITIONS=118} [2023-11-28 23:35:55,455 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 69 predicate places. [2023-11-28 23:35:55,455 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 118 transitions, 764 flow [2023-11-28 23:35:55,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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) [2023-11-28 23:35:55,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:55,456 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:35:55,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-28 23:35:55,456 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:55,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:55,456 INFO L85 PathProgramCache]: Analyzing trace with hash -412904119, now seen corresponding path program 1 times [2023-11-28 23:35:55,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:55,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863550137] [2023-11-28 23:35:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:55,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:35:55,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:55,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863550137] [2023-11-28 23:35:55,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863550137] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:35:55,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635676115] [2023-11-28 23:35:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:55,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:55,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:55,559 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:55,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:35:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:55,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:35:55,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:55,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:35:55,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:35:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:35:55,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635676115] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:35:55,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:35:55,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-28 23:35:55,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818498175] [2023-11-28 23:35:55,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:35:55,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:35:55,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:55,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:35:55,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:35:55,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 65 [2023-11-28 23:35:55,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 118 transitions, 764 flow. Second operand has 10 states, 10 states have (on average 28.7) internal successors, (287), 10 states have internal predecessors, (287), 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) [2023-11-28 23:35:55,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:35:55,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 65 [2023-11-28 23:35:55,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:35:59,365 INFO L124 PetriNetUnfolderBase]: 17294/27800 cut-off events. [2023-11-28 23:35:59,366 INFO L125 PetriNetUnfolderBase]: For 27870/29844 co-relation queries the response was YES. [2023-11-28 23:35:59,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76638 conditions, 27800 events. 17294/27800 cut-off events. For 27870/29844 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 201720 event pairs, 2918 based on Foata normal form. 1762/28476 useless extension candidates. Maximal degree in co-relation 76536. Up to 7181 conditions per place. [2023-11-28 23:35:59,591 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 226 selfloop transitions, 10 changer transitions 0/255 dead transitions. [2023-11-28 23:35:59,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 255 transitions, 1838 flow [2023-11-28 23:35:59,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:35:59,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 23:35:59,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 295 transitions. [2023-11-28 23:35:59,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6483516483516484 [2023-11-28 23:35:59,594 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 295 transitions. [2023-11-28 23:35:59,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 295 transitions. [2023-11-28 23:35:59,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:35:59,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 295 transitions. [2023-11-28 23:35:59,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.142857142857146) internal successors, (295), 7 states have internal predecessors, (295), 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) [2023-11-28 23:35:59,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 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) [2023-11-28 23:35:59,596 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 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) [2023-11-28 23:35:59,596 INFO L175 Difference]: Start difference. First operand has 132 places, 118 transitions, 764 flow. Second operand 7 states and 295 transitions. [2023-11-28 23:35:59,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 255 transitions, 1838 flow [2023-11-28 23:35:59,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 255 transitions, 1714 flow, removed 28 selfloop flow, removed 10 redundant places. [2023-11-28 23:35:59,690 INFO L231 Difference]: Finished difference. Result has 124 places, 123 transitions, 745 flow [2023-11-28 23:35:59,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=745, PETRI_PLACES=124, PETRI_TRANSITIONS=123} [2023-11-28 23:35:59,691 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 61 predicate places. [2023-11-28 23:35:59,691 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 123 transitions, 745 flow [2023-11-28 23:35:59,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.7) internal successors, (287), 10 states have internal predecessors, (287), 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) [2023-11-28 23:35:59,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:35:59,691 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2023-11-28 23:35:59,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:35:59,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 23:35:59,892 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:35:59,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:59,892 INFO L85 PathProgramCache]: Analyzing trace with hash -206050732, now seen corresponding path program 2 times [2023-11-28 23:35:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:59,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617610441] [2023-11-28 23:35:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:59,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:36:00,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:00,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617610441] [2023-11-28 23:36:00,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617610441] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:36:00,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105720397] [2023-11-28 23:36:00,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:36:00,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:00,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:00,205 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:00,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:36:00,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:36:00,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:36:00,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:36:00,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-28 23:36:00,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-28 23:36:00,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105720397] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:00,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:36:00,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2023-11-28 23:36:00,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011595795] [2023-11-28 23:36:00,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:00,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-28 23:36:00,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:00,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-28 23:36:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-11-28 23:36:00,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 65 [2023-11-28 23:36:00,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 123 transitions, 745 flow. Second operand has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 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) [2023-11-28 23:36:00,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:36:00,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 65 [2023-11-28 23:36:00,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:36:03,287 INFO L124 PetriNetUnfolderBase]: 12826/20644 cut-off events. [2023-11-28 23:36:03,288 INFO L125 PetriNetUnfolderBase]: For 35063/35575 co-relation queries the response was YES. [2023-11-28 23:36:03,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62481 conditions, 20644 events. 12826/20644 cut-off events. For 35063/35575 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 144583 event pairs, 8738 based on Foata normal form. 188/18986 useless extension candidates. Maximal degree in co-relation 62397. Up to 16734 conditions per place. [2023-11-28 23:36:03,448 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 42 selfloop transitions, 70 changer transitions 0/133 dead transitions. [2023-11-28 23:36:03,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 133 transitions, 1035 flow [2023-11-28 23:36:03,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-28 23:36:03,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-28 23:36:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 516 transitions. [2023-11-28 23:36:03,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4178137651821862 [2023-11-28 23:36:03,450 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 516 transitions. [2023-11-28 23:36:03,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 516 transitions. [2023-11-28 23:36:03,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:36:03,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 516 transitions. [2023-11-28 23:36:03,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 27.157894736842106) internal successors, (516), 19 states have internal predecessors, (516), 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) [2023-11-28 23:36:03,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 65.0) internal successors, (1300), 20 states have internal predecessors, (1300), 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) [2023-11-28 23:36:03,454 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 65.0) internal successors, (1300), 20 states have internal predecessors, (1300), 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) [2023-11-28 23:36:03,454 INFO L175 Difference]: Start difference. First operand has 124 places, 123 transitions, 745 flow. Second operand 19 states and 516 transitions. [2023-11-28 23:36:03,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 133 transitions, 1035 flow [2023-11-28 23:36:03,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 133 transitions, 980 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-28 23:36:03,507 INFO L231 Difference]: Finished difference. Result has 134 places, 133 transitions, 896 flow [2023-11-28 23:36:03,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=896, PETRI_PLACES=134, PETRI_TRANSITIONS=133} [2023-11-28 23:36:03,507 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 71 predicate places. [2023-11-28 23:36:03,507 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 133 transitions, 896 flow [2023-11-28 23:36:03,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.238095238095237) internal successors, (509), 21 states have internal predecessors, (509), 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) [2023-11-28 23:36:03,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:36:03,508 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:03,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:36:03,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 23:36:03,708 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:36:03,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:03,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1431660439, now seen corresponding path program 2 times [2023-11-28 23:36:03,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:03,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530683902] [2023-11-28 23:36:03,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:03,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-28 23:36:03,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:03,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530683902] [2023-11-28 23:36:03,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530683902] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:36:03,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873767396] [2023-11-28 23:36:03,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:36:03,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:03,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:03,902 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:03,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:36:04,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:36:04,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:36:04,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:36:04,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-28 23:36:04,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-28 23:36:04,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873767396] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:04,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:36:04,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-11-28 23:36:04,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930216023] [2023-11-28 23:36:04,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:04,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:36:04,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:04,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:36:04,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:36:04,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2023-11-28 23:36:04,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 133 transitions, 896 flow. Second operand has 11 states, 11 states have (on average 24.09090909090909) internal successors, (265), 11 states have internal predecessors, (265), 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) [2023-11-28 23:36:04,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:36:04,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2023-11-28 23:36:04,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:36:05,994 INFO L124 PetriNetUnfolderBase]: 8971/14270 cut-off events. [2023-11-28 23:36:05,994 INFO L125 PetriNetUnfolderBase]: For 18840/19209 co-relation queries the response was YES. [2023-11-28 23:36:06,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40990 conditions, 14270 events. 8971/14270 cut-off events. For 18840/19209 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 93313 event pairs, 3422 based on Foata normal form. 482/13838 useless extension candidates. Maximal degree in co-relation 40901. Up to 5387 conditions per place. [2023-11-28 23:36:06,086 INFO L140 encePairwiseOnDemand]: 50/65 looper letters, 176 selfloop transitions, 51 changer transitions 0/247 dead transitions. [2023-11-28 23:36:06,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 247 transitions, 1862 flow [2023-11-28 23:36:06,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:36:06,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-28 23:36:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 430 transitions. [2023-11-28 23:36:06,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2023-11-28 23:36:06,088 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 430 transitions. [2023-11-28 23:36:06,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 430 transitions. [2023-11-28 23:36:06,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:36:06,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 430 transitions. [2023-11-28 23:36:06,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 30.714285714285715) internal successors, (430), 14 states have internal predecessors, (430), 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) [2023-11-28 23:36:06,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 65.0) internal successors, (975), 15 states have internal predecessors, (975), 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) [2023-11-28 23:36:06,092 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 65.0) internal successors, (975), 15 states have internal predecessors, (975), 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) [2023-11-28 23:36:06,092 INFO L175 Difference]: Start difference. First operand has 134 places, 133 transitions, 896 flow. Second operand 14 states and 430 transitions. [2023-11-28 23:36:06,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 247 transitions, 1862 flow [2023-11-28 23:36:06,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 247 transitions, 1652 flow, removed 5 selfloop flow, removed 16 redundant places. [2023-11-28 23:36:06,150 INFO L231 Difference]: Finished difference. Result has 133 places, 137 transitions, 814 flow [2023-11-28 23:36:06,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=814, PETRI_PLACES=133, PETRI_TRANSITIONS=137} [2023-11-28 23:36:06,150 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 70 predicate places. [2023-11-28 23:36:06,150 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 137 transitions, 814 flow [2023-11-28 23:36:06,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.09090909090909) internal successors, (265), 11 states have internal predecessors, (265), 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) [2023-11-28 23:36:06,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:36:06,151 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:06,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 23:36:06,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 23:36:06,351 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:36:06,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:06,352 INFO L85 PathProgramCache]: Analyzing trace with hash -71286363, now seen corresponding path program 1 times [2023-11-28 23:36:06,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:06,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493346825] [2023-11-28 23:36:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:06,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:36:06,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:06,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493346825] [2023-11-28 23:36:06,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493346825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:36:06,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:36:06,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:36:06,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806125046] [2023-11-28 23:36:06,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:36:06,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:36:06,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:06,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:36:06,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:36:06,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 65 [2023-11-28 23:36:06,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 137 transitions, 814 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2023-11-28 23:36:06,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:36:06,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 65 [2023-11-28 23:36:06,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:36:08,365 INFO L124 PetriNetUnfolderBase]: 11239/17511 cut-off events. [2023-11-28 23:36:08,365 INFO L125 PetriNetUnfolderBase]: For 27329/28388 co-relation queries the response was YES. [2023-11-28 23:36:08,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54088 conditions, 17511 events. 11239/17511 cut-off events. For 27329/28388 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 114454 event pairs, 3650 based on Foata normal form. 671/17625 useless extension candidates. Maximal degree in co-relation 54014. Up to 7303 conditions per place. [2023-11-28 23:36:08,482 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 173 selfloop transitions, 10 changer transitions 0/199 dead transitions. [2023-11-28 23:36:08,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 199 transitions, 1496 flow [2023-11-28 23:36:08,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:36:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:36:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2023-11-28 23:36:08,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6423076923076924 [2023-11-28 23:36:08,484 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 167 transitions. [2023-11-28 23:36:08,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 167 transitions. [2023-11-28 23:36:08,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:36:08,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 167 transitions. [2023-11-28 23:36:08,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2023-11-28 23:36:08,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:36:08,485 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:36:08,485 INFO L175 Difference]: Start difference. First operand has 133 places, 137 transitions, 814 flow. Second operand 4 states and 167 transitions. [2023-11-28 23:36:08,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 199 transitions, 1496 flow [2023-11-28 23:36:08,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 199 transitions, 1437 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-28 23:36:08,596 INFO L231 Difference]: Finished difference. Result has 127 places, 137 transitions, 782 flow [2023-11-28 23:36:08,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=127, PETRI_TRANSITIONS=137} [2023-11-28 23:36:08,597 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 64 predicate places. [2023-11-28 23:36:08,597 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 137 transitions, 782 flow [2023-11-28 23:36:08,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2023-11-28 23:36:08,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:36:08,597 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:08,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-28 23:36:08,597 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:36:08,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:08,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2095844384, now seen corresponding path program 1 times [2023-11-28 23:36:08,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:08,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283616498] [2023-11-28 23:36:08,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:08,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:08,694 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:36:08,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:08,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283616498] [2023-11-28 23:36:08,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283616498] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:36:08,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453525162] [2023-11-28 23:36:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:08,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:08,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:08,696 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:08,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:36:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:08,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-28 23:36:08,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:36:08,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:36:09,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453525162] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:09,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:36:09,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-11-28 23:36:09,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916783550] [2023-11-28 23:36:09,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:09,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 23:36:09,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:09,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 23:36:09,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-28 23:36:09,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2023-11-28 23:36:09,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 137 transitions, 782 flow. Second operand has 19 states, 19 states have (on average 22.05263157894737) internal successors, (419), 19 states have internal predecessors, (419), 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) [2023-11-28 23:36:09,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:36:09,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2023-11-28 23:36:09,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:36:11,935 INFO L124 PetriNetUnfolderBase]: 13670/21430 cut-off events. [2023-11-28 23:36:11,935 INFO L125 PetriNetUnfolderBase]: For 52975/52975 co-relation queries the response was YES. [2023-11-28 23:36:12,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69254 conditions, 21430 events. 13670/21430 cut-off events. For 52975/52975 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 141158 event pairs, 1236 based on Foata normal form. 262/20017 useless extension candidates. Maximal degree in co-relation 69183. Up to 3448 conditions per place. [2023-11-28 23:36:12,219 INFO L140 encePairwiseOnDemand]: 49/65 looper letters, 320 selfloop transitions, 71 changer transitions 32/437 dead transitions. [2023-11-28 23:36:12,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 437 transitions, 3436 flow [2023-11-28 23:36:12,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-28 23:36:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-28 23:36:12,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 577 transitions. [2023-11-28 23:36:12,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672064777327935 [2023-11-28 23:36:12,221 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 577 transitions. [2023-11-28 23:36:12,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 577 transitions. [2023-11-28 23:36:12,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:36:12,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 577 transitions. [2023-11-28 23:36:12,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 30.36842105263158) internal successors, (577), 19 states have internal predecessors, (577), 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) [2023-11-28 23:36:12,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 65.0) internal successors, (1300), 20 states have internal predecessors, (1300), 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) [2023-11-28 23:36:12,224 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 65.0) internal successors, (1300), 20 states have internal predecessors, (1300), 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) [2023-11-28 23:36:12,225 INFO L175 Difference]: Start difference. First operand has 127 places, 137 transitions, 782 flow. Second operand 19 states and 577 transitions. [2023-11-28 23:36:12,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 437 transitions, 3436 flow [2023-11-28 23:36:12,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 437 transitions, 3331 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-11-28 23:36:12,293 INFO L231 Difference]: Finished difference. Result has 143 places, 142 transitions, 930 flow [2023-11-28 23:36:12,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=930, PETRI_PLACES=143, PETRI_TRANSITIONS=142} [2023-11-28 23:36:12,293 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 80 predicate places. [2023-11-28 23:36:12,294 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 142 transitions, 930 flow [2023-11-28 23:36:12,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.05263157894737) internal successors, (419), 19 states have internal predecessors, (419), 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) [2023-11-28 23:36:12,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:36:12,294 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:12,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-28 23:36:12,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:12,495 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:36:12,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:12,495 INFO L85 PathProgramCache]: Analyzing trace with hash 213303625, now seen corresponding path program 2 times [2023-11-28 23:36:12,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:12,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464475584] [2023-11-28 23:36:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:12,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:12,558 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-28 23:36:12,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:12,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464475584] [2023-11-28 23:36:12,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464475584] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:36:12,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582751476] [2023-11-28 23:36:12,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:36:12,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:12,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:12,560 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:12,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 23:36:12,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:36:12,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:36:12,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:36:12,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-28 23:36:12,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-28 23:36:12,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582751476] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:12,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:36:12,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2023-11-28 23:36:12,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109897483] [2023-11-28 23:36:12,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:12,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:36:12,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:12,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:36:12,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:36:12,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 65 [2023-11-28 23:36:12,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 142 transitions, 930 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2023-11-28 23:36:12,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:36:12,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 65 [2023-11-28 23:36:12,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:36:14,644 INFO L124 PetriNetUnfolderBase]: 10733/17596 cut-off events. [2023-11-28 23:36:14,644 INFO L125 PetriNetUnfolderBase]: For 32196/32344 co-relation queries the response was YES. [2023-11-28 23:36:14,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56166 conditions, 17596 events. 10733/17596 cut-off events. For 32196/32344 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 121138 event pairs, 2876 based on Foata normal form. 288/17345 useless extension candidates. Maximal degree in co-relation 56084. Up to 8528 conditions per place. [2023-11-28 23:36:14,769 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 120 selfloop transitions, 7 changer transitions 34/178 dead transitions. [2023-11-28 23:36:14,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 178 transitions, 1436 flow [2023-11-28 23:36:14,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:36:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:36:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2023-11-28 23:36:14,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6192307692307693 [2023-11-28 23:36:14,770 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 161 transitions. [2023-11-28 23:36:14,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 161 transitions. [2023-11-28 23:36:14,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:36:14,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 161 transitions. [2023-11-28 23:36:14,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-11-28 23:36:14,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:36:14,771 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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) [2023-11-28 23:36:14,771 INFO L175 Difference]: Start difference. First operand has 143 places, 142 transitions, 930 flow. Second operand 4 states and 161 transitions. [2023-11-28 23:36:14,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 178 transitions, 1436 flow [2023-11-28 23:36:14,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 178 transitions, 1329 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-28 23:36:14,839 INFO L231 Difference]: Finished difference. Result has 134 places, 119 transitions, 700 flow [2023-11-28 23:36:14,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=700, PETRI_PLACES=134, PETRI_TRANSITIONS=119} [2023-11-28 23:36:14,840 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 71 predicate places. [2023-11-28 23:36:14,840 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 119 transitions, 700 flow [2023-11-28 23:36:14,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2023-11-28 23:36:14,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:36:14,840 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:14,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 23:36:15,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-28 23:36:15,040 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:36:15,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:15,041 INFO L85 PathProgramCache]: Analyzing trace with hash 500204973, now seen corresponding path program 1 times [2023-11-28 23:36:15,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:15,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208403630] [2023-11-28 23:36:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:15,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:36:15,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:15,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208403630] [2023-11-28 23:36:15,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208403630] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:36:15,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021170200] [2023-11-28 23:36:15,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:15,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:15,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:15,145 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:15,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 23:36:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:15,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:36:15,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:36:15,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:36:15,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021170200] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:15,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:36:15,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-28 23:36:15,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997207138] [2023-11-28 23:36:15,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:15,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:36:15,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:15,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:36:15,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:36:15,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 65 [2023-11-28 23:36:15,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 119 transitions, 700 flow. Second operand has 12 states, 12 states have (on average 28.75) internal successors, (345), 12 states have internal predecessors, (345), 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) [2023-11-28 23:36:15,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:36:15,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 65 [2023-11-28 23:36:15,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:36:18,149 INFO L124 PetriNetUnfolderBase]: 14004/23836 cut-off events. [2023-11-28 23:36:18,149 INFO L125 PetriNetUnfolderBase]: For 62140/62596 co-relation queries the response was YES. [2023-11-28 23:36:18,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71024 conditions, 23836 events. 14004/23836 cut-off events. For 62140/62596 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 171140 event pairs, 2847 based on Foata normal form. 708/23350 useless extension candidates. Maximal degree in co-relation 70948. Up to 5729 conditions per place. [2023-11-28 23:36:18,325 INFO L140 encePairwiseOnDemand]: 61/65 looper letters, 360 selfloop transitions, 9 changer transitions 0/385 dead transitions. [2023-11-28 23:36:18,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 385 transitions, 2996 flow [2023-11-28 23:36:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:36:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:36:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 412 transitions. [2023-11-28 23:36:18,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6338461538461538 [2023-11-28 23:36:18,327 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 412 transitions. [2023-11-28 23:36:18,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 412 transitions. [2023-11-28 23:36:18,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:36:18,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 412 transitions. [2023-11-28 23:36:18,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 41.2) internal successors, (412), 10 states have internal predecessors, (412), 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) [2023-11-28 23:36:18,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 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) [2023-11-28 23:36:18,328 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 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) [2023-11-28 23:36:18,328 INFO L175 Difference]: Start difference. First operand has 134 places, 119 transitions, 700 flow. Second operand 10 states and 412 transitions. [2023-11-28 23:36:18,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 385 transitions, 2996 flow [2023-11-28 23:36:18,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 385 transitions, 2659 flow, removed 28 selfloop flow, removed 9 redundant places. [2023-11-28 23:36:18,379 INFO L231 Difference]: Finished difference. Result has 122 places, 125 transitions, 675 flow [2023-11-28 23:36:18,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=675, PETRI_PLACES=122, PETRI_TRANSITIONS=125} [2023-11-28 23:36:18,379 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 59 predicate places. [2023-11-28 23:36:18,379 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 125 transitions, 675 flow [2023-11-28 23:36:18,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.75) internal successors, (345), 12 states have internal predecessors, (345), 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) [2023-11-28 23:36:18,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:36:18,380 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:18,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 23:36:18,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-28 23:36:18,580 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:36:18,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:18,580 INFO L85 PathProgramCache]: Analyzing trace with hash 364355434, now seen corresponding path program 2 times [2023-11-28 23:36:18,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:18,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428052407] [2023-11-28 23:36:18,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:18,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:18,821 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-28 23:36:18,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:18,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428052407] [2023-11-28 23:36:18,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428052407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:36:18,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625772346] [2023-11-28 23:36:18,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:36:18,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:18,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:18,823 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:18,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 23:36:18,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:36:18,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:36:18,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:36:18,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-28 23:36:19,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-28 23:36:19,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625772346] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:19,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:36:19,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2023-11-28 23:36:19,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900662592] [2023-11-28 23:36:19,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:19,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 23:36:19,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:19,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 23:36:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:36:19,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2023-11-28 23:36:19,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 125 transitions, 675 flow. Second operand has 13 states, 13 states have (on average 22.846153846153847) internal successors, (297), 13 states have internal predecessors, (297), 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) [2023-11-28 23:36:19,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:36:19,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2023-11-28 23:36:19,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:36:25,325 INFO L124 PetriNetUnfolderBase]: 34165/57404 cut-off events. [2023-11-28 23:36:25,325 INFO L125 PetriNetUnfolderBase]: For 116800/117925 co-relation queries the response was YES. [2023-11-28 23:36:25,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164346 conditions, 57404 events. 34165/57404 cut-off events. For 116800/117925 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 461173 event pairs, 3024 based on Foata normal form. 472/51451 useless extension candidates. Maximal degree in co-relation 164276. Up to 11548 conditions per place. [2023-11-28 23:36:25,583 INFO L140 encePairwiseOnDemand]: 50/65 looper letters, 0 selfloop transitions, 0 changer transitions 402/402 dead transitions. [2023-11-28 23:36:25,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 402 transitions, 2818 flow [2023-11-28 23:36:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 23:36:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-28 23:36:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 585 transitions. [2023-11-28 23:36:25,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-11-28 23:36:25,585 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 585 transitions. [2023-11-28 23:36:25,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 585 transitions. [2023-11-28 23:36:25,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:36:25,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 585 transitions. [2023-11-28 23:36:25,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 27.857142857142858) internal successors, (585), 21 states have internal predecessors, (585), 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) [2023-11-28 23:36:25,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 65.0) internal successors, (1430), 22 states have internal predecessors, (1430), 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) [2023-11-28 23:36:25,587 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 65.0) internal successors, (1430), 22 states have internal predecessors, (1430), 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) [2023-11-28 23:36:25,587 INFO L175 Difference]: Start difference. First operand has 122 places, 125 transitions, 675 flow. Second operand 21 states and 585 transitions. [2023-11-28 23:36:25,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 402 transitions, 2818 flow [2023-11-28 23:36:26,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 402 transitions, 2778 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-28 23:36:26,134 INFO L231 Difference]: Finished difference. Result has 135 places, 0 transitions, 0 flow [2023-11-28 23:36:26,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=0, PETRI_PLACES=135, PETRI_TRANSITIONS=0} [2023-11-28 23:36:26,135 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 72 predicate places. [2023-11-28 23:36:26,135 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 0 transitions, 0 flow [2023-11-28 23:36:26,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.846153846153847) internal successors, (297), 13 states have internal predecessors, (297), 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) [2023-11-28 23:36:26,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2023-11-28 23:36:26,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-11-28 23:36:26,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-11-28 23:36:26,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-11-28 23:36:26,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-11-28 23:36:26,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-11-28 23:36:26,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-11-28 23:36:26,137 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-11-28 23:36:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-11-28 23:36:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-11-28 23:36:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-11-28 23:36:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-11-28 23:36:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-11-28 23:36:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-11-28 23:36:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2023-11-28 23:36:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2023-11-28 23:36:26,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2023-11-28 23:36:26,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-11-28 23:36:26,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-11-28 23:36:26,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-11-28 23:36:26,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-11-28 23:36:26,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-11-28 23:36:26,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-11-28 23:36:26,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-11-28 23:36:26,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-11-28 23:36:26,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 23:36:26,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-28 23:36:26,340 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:36:26,344 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-28 23:36:26,344 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 23:36:26,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:36:26 BasicIcfg [2023-11-28 23:36:26,348 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 23:36:26,348 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 23:36:26,348 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 23:36:26,348 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 23:36:26,349 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:35:34" (3/4) ... [2023-11-28 23:36:26,350 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 23:36:26,352 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-28 23:36:26,352 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-28 23:36:26,352 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-28 23:36:26,358 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 152 nodes and edges [2023-11-28 23:36:26,359 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2023-11-28 23:36:26,360 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-28 23:36:26,360 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-28 23:36:26,457 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 23:36:26,458 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 23:36:26,458 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 23:36:26,459 INFO L158 Benchmark]: Toolchain (without parser) took 52827.30ms. Allocated memory was 132.1MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 93.6MB in the beginning and 5.6GB in the end (delta: -5.5GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2023-11-28 23:36:26,459 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 56.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 23:36:26,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.99ms. Allocated memory is still 132.1MB. Free memory was 93.6MB in the beginning and 81.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-28 23:36:26,460 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.58ms. Allocated memory is still 132.1MB. Free memory was 81.6MB in the beginning and 79.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 23:36:26,460 INFO L158 Benchmark]: Boogie Preprocessor took 56.04ms. Allocated memory is still 132.1MB. Free memory was 79.5MB in the beginning and 76.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 23:36:26,461 INFO L158 Benchmark]: RCFGBuilder took 805.12ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 76.8MB in the beginning and 89.5MB in the end (delta: -12.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-28 23:36:26,461 INFO L158 Benchmark]: TraceAbstraction took 51564.56ms. Allocated memory was 159.4MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 89.3MB in the beginning and 5.6GB in the end (delta: -5.5GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2023-11-28 23:36:26,461 INFO L158 Benchmark]: Witness Printer took 109.97ms. Allocated memory is still 7.8GB. Free memory was 5.6GB in the beginning and 5.6GB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-28 23:36:26,463 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 56.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.99ms. Allocated memory is still 132.1MB. Free memory was 93.6MB in the beginning and 81.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.58ms. Allocated memory is still 132.1MB. Free memory was 81.6MB in the beginning and 79.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.04ms. Allocated memory is still 132.1MB. Free memory was 79.5MB in the beginning and 76.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 805.12ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 76.8MB in the beginning and 89.5MB in the end (delta: -12.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 51564.56ms. Allocated memory was 159.4MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 89.3MB in the beginning and 5.6GB in the end (delta: -5.5GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Witness Printer took 109.97ms. Allocated memory is still 7.8GB. Free memory was 5.6GB in the beginning and 5.6GB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: 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 7 procedures, 92 locations, 25 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: 51.4s, OverallIterations: 23, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 42.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2561 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2387 mSDsluCounter, 1789 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1711 mSDsCounter, 486 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8106 IncrementalHoareTripleChecker+Invalid, 8592 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 486 mSolverCounterUnsat, 78 mSDtfsCounter, 8106 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 908 GetRequests, 633 SyntacticMatches, 8 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=930occurred in iteration=20, InterpolantAutomatonStates: 206, 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: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 894 NumberOfCodeBlocks, 766 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1169 ConstructedInterpolants, 0 QuantifiedInterpolants, 3021 SizeOfPredicates, 44 NumberOfNonLiveVariables, 2918 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 49 InterpolantComputations, 12 PerfectInterpolantSequences, 758/1011 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-28 23:36:26,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_107fb4f3-a88d-4be0-a1d0-fd2fc85ec05c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE