./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --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 a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:18:40,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:18:40,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:18:40,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:18:40,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:18:40,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:18:40,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:18:40,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:18:40,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:18:40,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:18:40,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:18:40,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:18:40,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:18:40,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:18:40,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:18:40,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:18:40,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:18:40,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:18:40,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:18:40,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:18:40,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:18:40,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:18:40,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:18:40,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:18:40,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:18:40,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:18:40,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:18:40,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:18:40,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:18:40,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:18:40,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:18:40,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:18:40,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:18:40,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:18:40,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:18:40,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:18:40,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:18:40,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:18:40,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:18:40,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:18:40,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:18:40,058 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 18:18:40,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:18:40,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:18:40,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:18:40,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:18:40,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:18:40,080 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:18:40,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:18:40,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:18:40,081 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:18:40,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:18:40,081 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:18:40,082 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:18:40,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:18:40,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:18:40,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:18:40,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:18:40,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:18:40,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:18:40,083 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 18:18:40,083 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:18:40,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:18:40,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:18:40,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:18:40,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:18:40,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:18:40,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:18:40,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:18:40,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:18:40,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:18:40,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:18:40,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:18:40,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:18:40,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:18:40,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:18:40,086 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:18:40,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:18:40,086 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:18:40,086 INFO L138 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_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 [2022-12-13 18:18:40,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:18:40,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:18:40,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:18:40,312 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:18:40,313 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:18:40,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-12-13 18:18:42,791 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:18:42,966 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:18:42,967 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-12-13 18:18:42,972 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/data/fd1da2b4d/23e9ac608f9f45968f722b8cd0f61fab/FLAG9ac1650f0 [2022-12-13 18:18:43,347 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/data/fd1da2b4d/23e9ac608f9f45968f722b8cd0f61fab [2022-12-13 18:18:43,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:18:43,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:18:43,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:18:43,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:18:43,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:18:43,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:18:43" (1/1) ... [2022-12-13 18:18:43,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dfccdee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43, skipping insertion in model container [2022-12-13 18:18:43,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:18:43" (1/1) ... [2022-12-13 18:18:43,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:18:43,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:18:43,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:18:43,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:18:43,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:18:43,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:18:43,486 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-12-13 18:18:43,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:18:43,494 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:18:43,505 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:18:43,506 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:18:43,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:18:43,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:18:43,510 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-12-13 18:18:43,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:18:43,522 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:18:43,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43 WrapperNode [2022-12-13 18:18:43,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:18:43,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:18:43,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:18:43,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:18:43,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43" (1/1) ... [2022-12-13 18:18:43,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43" (1/1) ... [2022-12-13 18:18:43,547 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-12-13 18:18:43,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:18:43,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:18:43,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:18:43,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:18:43,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43" (1/1) ... [2022-12-13 18:18:43,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43" (1/1) ... [2022-12-13 18:18:43,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43" (1/1) ... [2022-12-13 18:18:43,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43" (1/1) ... [2022-12-13 18:18:43,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43" (1/1) ... [2022-12-13 18:18:43,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43" (1/1) ... [2022-12-13 18:18:43,563 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43" (1/1) ... [2022-12-13 18:18:43,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43" (1/1) ... [2022-12-13 18:18:43,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:18:43,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:18:43,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:18:43,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:18:43,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43" (1/1) ... [2022-12-13 18:18:43,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:18:43,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:18:43,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:18:43,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:18:43,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:18:43,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 18:18:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 18:18:43,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 18:18:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 18:18:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:18:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:18:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:18:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 18:18:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 18:18:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:18:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:18:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:18:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:18:43,620 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 18:18:43,687 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:18:43,688 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:18:43,805 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:18:43,825 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:18:43,825 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 18:18:43,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:18:43 BoogieIcfgContainer [2022-12-13 18:18:43,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:18:43,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:18:43,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:18:43,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:18:43,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:18:43" (1/3) ... [2022-12-13 18:18:43,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f4df37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:18:43, skipping insertion in model container [2022-12-13 18:18:43,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:18:43" (2/3) ... [2022-12-13 18:18:43,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f4df37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:18:43, skipping insertion in model container [2022-12-13 18:18:43,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:18:43" (3/3) ... [2022-12-13 18:18:43,836 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-12-13 18:18:43,845 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:18:43,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:18:43,856 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 18:18:43,856 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:18:43,921 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 18:18:43,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 212 flow [2022-12-13 18:18:43,987 INFO L130 PetriNetUnfolder]: 6/96 cut-off events. [2022-12-13 18:18:43,987 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:18:43,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 6/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2022-12-13 18:18:43,992 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 212 flow [2022-12-13 18:18:43,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 77 transitions, 163 flow [2022-12-13 18:18:44,000 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:18:44,007 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 77 transitions, 163 flow [2022-12-13 18:18:44,010 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 77 transitions, 163 flow [2022-12-13 18:18:44,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 163 flow [2022-12-13 18:18:44,040 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-12-13 18:18:44,040 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:18:44,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 77 events. 5/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 107 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2022-12-13 18:18:44,042 INFO L119 LiptonReduction]: Number of co-enabled transitions 1088 [2022-12-13 18:18:45,952 INFO L134 LiptonReduction]: Checked pairs total: 1037 [2022-12-13 18:18:45,952 INFO L136 LiptonReduction]: Total number of compositions: 72 [2022-12-13 18:18:45,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:18:45,974 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=LoopsAndPotentialCycles, 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;@1a9474ad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:18:45,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 18:18:45,977 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2022-12-13 18:18:45,977 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:18:45,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:45,978 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 18:18:45,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:45,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:45,982 INFO L85 PathProgramCache]: Analyzing trace with hash 11348334, now seen corresponding path program 1 times [2022-12-13 18:18:45,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:45,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725432195] [2022-12-13 18:18:45,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:45,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:46,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:46,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725432195] [2022-12-13 18:18:46,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725432195] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:46,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:46,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:18:46,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234435947] [2022-12-13 18:18:46,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:46,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:18:46,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:18:46,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:18:46,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 170 [2022-12-13 18:18:46,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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) [2022-12-13 18:18:46,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:46,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 170 [2022-12-13 18:18:46,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:46,358 INFO L130 PetriNetUnfolder]: 84/151 cut-off events. [2022-12-13 18:18:46,358 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 18:18:46,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 151 events. 84/151 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 503 event pairs, 7 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 272. Up to 78 conditions per place. [2022-12-13 18:18:46,360 INFO L137 encePairwiseOnDemand]: 161/170 looper letters, 32 selfloop transitions, 5 changer transitions 2/39 dead transitions. [2022-12-13 18:18:46,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 39 transitions, 171 flow [2022-12-13 18:18:46,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:18:46,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:18:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2022-12-13 18:18:46,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2022-12-13 18:18:46,375 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2022-12-13 18:18:46,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2022-12-13 18:18:46,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:46,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2022-12-13 18:18:46,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2022-12-13 18:18:46,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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) [2022-12-13 18:18:46,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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) [2022-12-13 18:18:46,390 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 51 flow. Second operand 4 states and 360 transitions. [2022-12-13 18:18:46,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 39 transitions, 171 flow [2022-12-13 18:18:46,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 39 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 18:18:46,395 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 72 flow [2022-12-13 18:18:46,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2022-12-13 18:18:46,400 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2022-12-13 18:18:46,401 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 72 flow [2022-12-13 18:18:46,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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) [2022-12-13 18:18:46,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:46,401 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 18:18:46,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:18:46,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:46,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:46,402 INFO L85 PathProgramCache]: Analyzing trace with hash 11348315, now seen corresponding path program 1 times [2022-12-13 18:18:46,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:46,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897571202] [2022-12-13 18:18:46,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:46,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:46,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:46,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897571202] [2022-12-13 18:18:46,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897571202] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:46,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:46,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:18:46,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31959267] [2022-12-13 18:18:46,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:46,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:18:46,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:46,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:18:46,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:18:46,477 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 170 [2022-12-13 18:18:46,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2022-12-13 18:18:46,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:46,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 170 [2022-12-13 18:18:46,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:46,522 INFO L130 PetriNetUnfolder]: 62/113 cut-off events. [2022-12-13 18:18:46,522 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-12-13 18:18:46,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 113 events. 62/113 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 320 event pairs, 6 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 252. Up to 94 conditions per place. [2022-12-13 18:18:46,523 INFO L137 encePairwiseOnDemand]: 167/170 looper letters, 24 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2022-12-13 18:18:46,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 140 flow [2022-12-13 18:18:46,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:18:46,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:18:46,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2022-12-13 18:18:46,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5044117647058823 [2022-12-13 18:18:46,526 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 343 transitions. [2022-12-13 18:18:46,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 343 transitions. [2022-12-13 18:18:46,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:46,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 343 transitions. [2022-12-13 18:18:46,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.75) internal successors, (343), 4 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) [2022-12-13 18:18:46,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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) [2022-12-13 18:18:46,529 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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) [2022-12-13 18:18:46,529 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 72 flow. Second operand 4 states and 343 transitions. [2022-12-13 18:18:46,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 140 flow [2022-12-13 18:18:46,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:18:46,530 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 72 flow [2022-12-13 18:18:46,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2022-12-13 18:18:46,531 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2022-12-13 18:18:46,531 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 72 flow [2022-12-13 18:18:46,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2022-12-13 18:18:46,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:46,532 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:18:46,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:18:46,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:46,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:46,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1978361695, now seen corresponding path program 1 times [2022-12-13 18:18:46,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:46,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351611451] [2022-12-13 18:18:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:46,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:46,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:46,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351611451] [2022-12-13 18:18:46,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351611451] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:46,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:46,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:18:46,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730132878] [2022-12-13 18:18:46,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:46,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:18:46,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:46,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:18:46,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:18:46,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 170 [2022-12-13 18:18:46,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 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) [2022-12-13 18:18:46,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:46,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 170 [2022-12-13 18:18:46,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:46,689 INFO L130 PetriNetUnfolder]: 54/101 cut-off events. [2022-12-13 18:18:46,689 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-12-13 18:18:46,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 101 events. 54/101 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 255 event pairs, 11 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 176. Up to 62 conditions per place. [2022-12-13 18:18:46,691 INFO L137 encePairwiseOnDemand]: 165/170 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2022-12-13 18:18:46,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 166 flow [2022-12-13 18:18:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:18:46,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:18:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2022-12-13 18:18:46,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5044117647058823 [2022-12-13 18:18:46,693 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 343 transitions. [2022-12-13 18:18:46,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 343 transitions. [2022-12-13 18:18:46,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:46,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 343 transitions. [2022-12-13 18:18:46,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.75) internal successors, (343), 4 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) [2022-12-13 18:18:46,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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) [2022-12-13 18:18:46,696 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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) [2022-12-13 18:18:46,696 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 72 flow. Second operand 4 states and 343 transitions. [2022-12-13 18:18:46,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 166 flow [2022-12-13 18:18:46,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:18:46,698 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 97 flow [2022-12-13 18:18:46,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-12-13 18:18:46,699 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2022-12-13 18:18:46,699 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 97 flow [2022-12-13 18:18:46,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 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) [2022-12-13 18:18:46,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:46,700 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:18:46,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:18:46,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:46,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:46,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1978361697, now seen corresponding path program 1 times [2022-12-13 18:18:46,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:46,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114324136] [2022-12-13 18:18:46,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:46,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:46,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:46,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114324136] [2022-12-13 18:18:46,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114324136] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:46,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:46,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:18:46,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564954357] [2022-12-13 18:18:46,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:46,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:18:46,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:46,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:18:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:18:46,760 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 170 [2022-12-13 18:18:46,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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) [2022-12-13 18:18:46,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:46,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 170 [2022-12-13 18:18:46,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:46,798 INFO L130 PetriNetUnfolder]: 43/82 cut-off events. [2022-12-13 18:18:46,798 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-13 18:18:46,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 82 events. 43/82 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 184 event pairs, 6 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 174. Up to 57 conditions per place. [2022-12-13 18:18:46,800 INFO L137 encePairwiseOnDemand]: 167/170 looper letters, 23 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2022-12-13 18:18:46,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 163 flow [2022-12-13 18:18:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:18:46,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:18:46,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2022-12-13 18:18:46,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-13 18:18:46,802 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2022-12-13 18:18:46,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2022-12-13 18:18:46,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:46,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2022-12-13 18:18:46,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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) [2022-12-13 18:18:46,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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) [2022-12-13 18:18:46,806 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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) [2022-12-13 18:18:46,806 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 97 flow. Second operand 4 states and 340 transitions. [2022-12-13 18:18:46,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 163 flow [2022-12-13 18:18:46,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:18:46,807 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 96 flow [2022-12-13 18:18:46,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2022-12-13 18:18:46,808 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2022-12-13 18:18:46,808 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 96 flow [2022-12-13 18:18:46,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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) [2022-12-13 18:18:46,809 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:46,809 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:46,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:18:46,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:46,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash 719214457, now seen corresponding path program 1 times [2022-12-13 18:18:46,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:46,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362922291] [2022-12-13 18:18:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:46,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:46,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:46,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362922291] [2022-12-13 18:18:46,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362922291] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:46,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:46,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:18:46,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193261810] [2022-12-13 18:18:46,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:46,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:18:46,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:46,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:18:46,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:18:46,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 170 [2022-12-13 18:18:46,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 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) [2022-12-13 18:18:46,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:46,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 170 [2022-12-13 18:18:46,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:47,027 INFO L130 PetriNetUnfolder]: 50/93 cut-off events. [2022-12-13 18:18:47,027 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2022-12-13 18:18:47,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 93 events. 50/93 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 223 event pairs, 2 based on Foata normal form. 4/95 useless extension candidates. Maximal degree in co-relation 234. Up to 29 conditions per place. [2022-12-13 18:18:47,028 INFO L137 encePairwiseOnDemand]: 162/170 looper letters, 29 selfloop transitions, 12 changer transitions 0/41 dead transitions. [2022-12-13 18:18:47,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 238 flow [2022-12-13 18:18:47,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:18:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:18:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 610 transitions. [2022-12-13 18:18:47,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4485294117647059 [2022-12-13 18:18:47,030 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 610 transitions. [2022-12-13 18:18:47,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 610 transitions. [2022-12-13 18:18:47,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:47,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 610 transitions. [2022-12-13 18:18:47,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.25) internal successors, (610), 8 states have internal predecessors, (610), 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) [2022-12-13 18:18:47,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 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) [2022-12-13 18:18:47,034 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 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) [2022-12-13 18:18:47,034 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 96 flow. Second operand 8 states and 610 transitions. [2022-12-13 18:18:47,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 238 flow [2022-12-13 18:18:47,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 233 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:18:47,036 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 152 flow [2022-12-13 18:18:47,036 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=152, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2022-12-13 18:18:47,036 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2022-12-13 18:18:47,037 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 152 flow [2022-12-13 18:18:47,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 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) [2022-12-13 18:18:47,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:47,037 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:47,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:18:47,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:47,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:47,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1465404608, now seen corresponding path program 1 times [2022-12-13 18:18:47,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:47,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159270035] [2022-12-13 18:18:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:47,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:47,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:47,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:47,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159270035] [2022-12-13 18:18:47,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159270035] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:47,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:47,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:18:47,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73251934] [2022-12-13 18:18:47,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:47,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:18:47,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:47,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:18:47,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:18:47,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 170 [2022-12-13 18:18:47,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2022-12-13 18:18:47,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:47,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 170 [2022-12-13 18:18:47,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:47,117 INFO L130 PetriNetUnfolder]: 42/79 cut-off events. [2022-12-13 18:18:47,117 INFO L131 PetriNetUnfolder]: For 157/157 co-relation queries the response was YES. [2022-12-13 18:18:47,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 79 events. 42/79 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 168 event pairs, 9 based on Foata normal form. 8/87 useless extension candidates. Maximal degree in co-relation 192. Up to 49 conditions per place. [2022-12-13 18:18:47,118 INFO L137 encePairwiseOnDemand]: 165/170 looper letters, 22 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2022-12-13 18:18:47,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 198 flow [2022-12-13 18:18:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:18:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:18:47,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2022-12-13 18:18:47,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2022-12-13 18:18:47,120 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2022-12-13 18:18:47,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2022-12-13 18:18:47,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:47,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2022-12-13 18:18:47,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2022-12-13 18:18:47,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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) [2022-12-13 18:18:47,122 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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) [2022-12-13 18:18:47,122 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 152 flow. Second operand 4 states and 360 transitions. [2022-12-13 18:18:47,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 198 flow [2022-12-13 18:18:47,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 165 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-12-13 18:18:47,123 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 107 flow [2022-12-13 18:18:47,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2022-12-13 18:18:47,124 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2022-12-13 18:18:47,124 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 107 flow [2022-12-13 18:18:47,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2022-12-13 18:18:47,124 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:47,124 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:47,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:18:47,124 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:47,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:47,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1493110237, now seen corresponding path program 2 times [2022-12-13 18:18:47,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:47,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184844918] [2022-12-13 18:18:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:47,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:47,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:47,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184844918] [2022-12-13 18:18:47,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184844918] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:47,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:47,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:18:47,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025089471] [2022-12-13 18:18:47,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:47,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:18:47,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:47,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:18:47,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:18:47,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 170 [2022-12-13 18:18:47,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 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) [2022-12-13 18:18:47,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:47,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 170 [2022-12-13 18:18:47,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:47,352 INFO L130 PetriNetUnfolder]: 52/95 cut-off events. [2022-12-13 18:18:47,352 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-12-13 18:18:47,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 95 events. 52/95 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 215 event pairs, 4 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 262. Up to 56 conditions per place. [2022-12-13 18:18:47,353 INFO L137 encePairwiseOnDemand]: 162/170 looper letters, 29 selfloop transitions, 14 changer transitions 0/43 dead transitions. [2022-12-13 18:18:47,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 259 flow [2022-12-13 18:18:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:18:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:18:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 611 transitions. [2022-12-13 18:18:47,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44926470588235295 [2022-12-13 18:18:47,354 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 611 transitions. [2022-12-13 18:18:47,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 611 transitions. [2022-12-13 18:18:47,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:47,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 611 transitions. [2022-12-13 18:18:47,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.375) internal successors, (611), 8 states have internal predecessors, (611), 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) [2022-12-13 18:18:47,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 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) [2022-12-13 18:18:47,357 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 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) [2022-12-13 18:18:47,357 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 107 flow. Second operand 8 states and 611 transitions. [2022-12-13 18:18:47,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 259 flow [2022-12-13 18:18:47,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:18:47,359 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 167 flow [2022-12-13 18:18:47,359 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=167, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2022-12-13 18:18:47,359 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2022-12-13 18:18:47,359 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 167 flow [2022-12-13 18:18:47,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 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) [2022-12-13 18:18:47,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:47,359 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:47,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:18:47,360 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:47,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:47,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1465404579, now seen corresponding path program 1 times [2022-12-13 18:18:47,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:47,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353182425] [2022-12-13 18:18:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:47,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:47,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:47,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353182425] [2022-12-13 18:18:47,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353182425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:47,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:47,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:18:47,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656166657] [2022-12-13 18:18:47,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:47,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:18:47,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:47,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:18:47,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:18:47,469 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 170 [2022-12-13 18:18:47,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 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) [2022-12-13 18:18:47,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:47,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 170 [2022-12-13 18:18:47,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:47,555 INFO L130 PetriNetUnfolder]: 53/98 cut-off events. [2022-12-13 18:18:47,555 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2022-12-13 18:18:47,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 98 events. 53/98 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 230 event pairs, 5 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 336. Up to 61 conditions per place. [2022-12-13 18:18:47,556 INFO L137 encePairwiseOnDemand]: 162/170 looper letters, 26 selfloop transitions, 13 changer transitions 0/39 dead transitions. [2022-12-13 18:18:47,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 289 flow [2022-12-13 18:18:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:18:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:18:47,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 468 transitions. [2022-12-13 18:18:47,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4588235294117647 [2022-12-13 18:18:47,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 468 transitions. [2022-12-13 18:18:47,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 468 transitions. [2022-12-13 18:18:47,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:47,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 468 transitions. [2022-12-13 18:18:47,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 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) [2022-12-13 18:18:47,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2022-12-13 18:18:47,560 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2022-12-13 18:18:47,560 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 167 flow. Second operand 6 states and 468 transitions. [2022-12-13 18:18:47,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 289 flow [2022-12-13 18:18:47,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 257 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-13 18:18:47,561 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 171 flow [2022-12-13 18:18:47,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=171, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2022-12-13 18:18:47,562 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2022-12-13 18:18:47,562 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 171 flow [2022-12-13 18:18:47,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 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) [2022-12-13 18:18:47,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:47,562 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:47,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:18:47,562 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:47,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:47,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1464914469, now seen corresponding path program 2 times [2022-12-13 18:18:47,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:47,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494410827] [2022-12-13 18:18:47,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:47,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:47,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:47,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494410827] [2022-12-13 18:18:47,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494410827] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:47,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:47,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:18:47,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789283192] [2022-12-13 18:18:47,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:47,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:18:47,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:47,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:18:47,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:18:47,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 170 [2022-12-13 18:18:47,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 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) [2022-12-13 18:18:47,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:47,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 170 [2022-12-13 18:18:47,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:47,787 INFO L130 PetriNetUnfolder]: 61/110 cut-off events. [2022-12-13 18:18:47,787 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-12-13 18:18:47,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 110 events. 61/110 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 274 event pairs, 4 based on Foata normal form. 2/110 useless extension candidates. Maximal degree in co-relation 390. Up to 68 conditions per place. [2022-12-13 18:18:47,788 INFO L137 encePairwiseOnDemand]: 162/170 looper letters, 31 selfloop transitions, 16 changer transitions 0/47 dead transitions. [2022-12-13 18:18:47,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 354 flow [2022-12-13 18:18:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:18:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:18:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 609 transitions. [2022-12-13 18:18:47,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44779411764705884 [2022-12-13 18:18:47,790 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 609 transitions. [2022-12-13 18:18:47,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 609 transitions. [2022-12-13 18:18:47,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:47,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 609 transitions. [2022-12-13 18:18:47,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.125) internal successors, (609), 8 states have internal predecessors, (609), 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) [2022-12-13 18:18:47,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 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) [2022-12-13 18:18:47,792 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 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) [2022-12-13 18:18:47,792 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 171 flow. Second operand 8 states and 609 transitions. [2022-12-13 18:18:47,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 354 flow [2022-12-13 18:18:47,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 322 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 18:18:47,794 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 223 flow [2022-12-13 18:18:47,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=223, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2022-12-13 18:18:47,794 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2022-12-13 18:18:47,794 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 223 flow [2022-12-13 18:18:47,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 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) [2022-12-13 18:18:47,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:47,795 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:47,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:18:47,795 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:47,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1464914497, now seen corresponding path program 3 times [2022-12-13 18:18:47,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:47,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145739759] [2022-12-13 18:18:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:47,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:47,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:47,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145739759] [2022-12-13 18:18:47,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145739759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:47,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:47,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:18:47,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744031653] [2022-12-13 18:18:47,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:47,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:18:47,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:47,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:18:47,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:18:47,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 170 [2022-12-13 18:18:47,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 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) [2022-12-13 18:18:47,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:47,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 170 [2022-12-13 18:18:47,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:47,977 INFO L130 PetriNetUnfolder]: 64/117 cut-off events. [2022-12-13 18:18:47,977 INFO L131 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2022-12-13 18:18:47,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 117 events. 64/117 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 295 event pairs, 9 based on Foata normal form. 4/119 useless extension candidates. Maximal degree in co-relation 425. Up to 73 conditions per place. [2022-12-13 18:18:47,979 INFO L137 encePairwiseOnDemand]: 162/170 looper letters, 30 selfloop transitions, 15 changer transitions 0/45 dead transitions. [2022-12-13 18:18:47,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 372 flow [2022-12-13 18:18:47,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:18:47,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:18:47,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 468 transitions. [2022-12-13 18:18:47,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4588235294117647 [2022-12-13 18:18:47,980 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 468 transitions. [2022-12-13 18:18:47,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 468 transitions. [2022-12-13 18:18:47,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:47,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 468 transitions. [2022-12-13 18:18:47,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 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) [2022-12-13 18:18:47,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2022-12-13 18:18:47,982 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2022-12-13 18:18:47,982 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 223 flow. Second operand 6 states and 468 transitions. [2022-12-13 18:18:47,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 372 flow [2022-12-13 18:18:47,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 334 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-13 18:18:47,984 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 231 flow [2022-12-13 18:18:47,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2022-12-13 18:18:47,985 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2022-12-13 18:18:47,985 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 231 flow [2022-12-13 18:18:47,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 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) [2022-12-13 18:18:47,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:47,985 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:47,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:18:47,985 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:47,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:47,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1464943299, now seen corresponding path program 3 times [2022-12-13 18:18:47,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:47,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966328267] [2022-12-13 18:18:47,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:47,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:48,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:48,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966328267] [2022-12-13 18:18:48,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966328267] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:48,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:48,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:18:48,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69034560] [2022-12-13 18:18:48,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:48,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:18:48,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:48,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:18:48,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:18:48,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 170 [2022-12-13 18:18:48,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 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) [2022-12-13 18:18:48,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:48,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 170 [2022-12-13 18:18:48,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:48,186 INFO L130 PetriNetUnfolder]: 65/120 cut-off events. [2022-12-13 18:18:48,186 INFO L131 PetriNetUnfolder]: For 291/291 co-relation queries the response was YES. [2022-12-13 18:18:48,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 120 events. 65/120 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 316 event pairs, 6 based on Foata normal form. 2/118 useless extension candidates. Maximal degree in co-relation 472. Up to 55 conditions per place. [2022-12-13 18:18:48,187 INFO L137 encePairwiseOnDemand]: 163/170 looper letters, 34 selfloop transitions, 15 changer transitions 0/49 dead transitions. [2022-12-13 18:18:48,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 407 flow [2022-12-13 18:18:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:18:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:18:48,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 605 transitions. [2022-12-13 18:18:48,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44485294117647056 [2022-12-13 18:18:48,189 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 605 transitions. [2022-12-13 18:18:48,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 605 transitions. [2022-12-13 18:18:48,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:48,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 605 transitions. [2022-12-13 18:18:48,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.625) internal successors, (605), 8 states have internal predecessors, (605), 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) [2022-12-13 18:18:48,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 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) [2022-12-13 18:18:48,191 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 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) [2022-12-13 18:18:48,191 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 231 flow. Second operand 8 states and 605 transitions. [2022-12-13 18:18:48,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 407 flow [2022-12-13 18:18:48,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 369 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-12-13 18:18:48,193 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 239 flow [2022-12-13 18:18:48,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2022-12-13 18:18:48,194 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 25 predicate places. [2022-12-13 18:18:48,194 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 239 flow [2022-12-13 18:18:48,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 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) [2022-12-13 18:18:48,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:48,194 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:48,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:18:48,194 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:48,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:48,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1815683895, now seen corresponding path program 1 times [2022-12-13 18:18:48,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:48,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354111255] [2022-12-13 18:18:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:48,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:48,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:48,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354111255] [2022-12-13 18:18:48,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354111255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:48,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:48,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:18:48,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975570594] [2022-12-13 18:18:48,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:48,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:18:48,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:48,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:18:48,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:18:48,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2022-12-13 18:18:48,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:48,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:48,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2022-12-13 18:18:48,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:48,342 INFO L130 PetriNetUnfolder]: 102/193 cut-off events. [2022-12-13 18:18:48,342 INFO L131 PetriNetUnfolder]: For 571/571 co-relation queries the response was YES. [2022-12-13 18:18:48,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 193 events. 102/193 cut-off events. For 571/571 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 656 event pairs, 16 based on Foata normal form. 4/191 useless extension candidates. Maximal degree in co-relation 659. Up to 78 conditions per place. [2022-12-13 18:18:48,344 INFO L137 encePairwiseOnDemand]: 162/170 looper letters, 42 selfloop transitions, 22 changer transitions 4/68 dead transitions. [2022-12-13 18:18:48,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 570 flow [2022-12-13 18:18:48,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:18:48,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:18:48,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 554 transitions. [2022-12-13 18:18:48,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46554621848739497 [2022-12-13 18:18:48,347 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 554 transitions. [2022-12-13 18:18:48,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 554 transitions. [2022-12-13 18:18:48,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:48,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 554 transitions. [2022-12-13 18:18:48,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.14285714285714) internal successors, (554), 7 states have internal predecessors, (554), 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) [2022-12-13 18:18:48,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 170.0) internal successors, (1360), 8 states have internal predecessors, (1360), 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) [2022-12-13 18:18:48,353 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 170.0) internal successors, (1360), 8 states have internal predecessors, (1360), 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) [2022-12-13 18:18:48,353 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 239 flow. Second operand 7 states and 554 transitions. [2022-12-13 18:18:48,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 570 flow [2022-12-13 18:18:48,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 522 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-12-13 18:18:48,358 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 378 flow [2022-12-13 18:18:48,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2022-12-13 18:18:48,359 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 29 predicate places. [2022-12-13 18:18:48,359 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 378 flow [2022-12-13 18:18:48,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:48,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:48,359 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:48,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:18:48,359 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:48,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1817097647, now seen corresponding path program 1 times [2022-12-13 18:18:48,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:48,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682225388] [2022-12-13 18:18:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:48,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:48,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:48,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682225388] [2022-12-13 18:18:48,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682225388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:48,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:48,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:18:48,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945178417] [2022-12-13 18:18:48,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:48,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:18:48,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:48,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:18:48,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:18:48,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2022-12-13 18:18:48,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 378 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:48,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:48,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2022-12-13 18:18:48,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:48,505 INFO L130 PetriNetUnfolder]: 111/214 cut-off events. [2022-12-13 18:18:48,505 INFO L131 PetriNetUnfolder]: For 1044/1044 co-relation queries the response was YES. [2022-12-13 18:18:48,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 214 events. 111/214 cut-off events. For 1044/1044 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 761 event pairs, 12 based on Foata normal form. 6/220 useless extension candidates. Maximal degree in co-relation 990. Up to 83 conditions per place. [2022-12-13 18:18:48,506 INFO L137 encePairwiseOnDemand]: 163/170 looper letters, 42 selfloop transitions, 19 changer transitions 2/63 dead transitions. [2022-12-13 18:18:48,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 642 flow [2022-12-13 18:18:48,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:18:48,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:18:48,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 476 transitions. [2022-12-13 18:18:48,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2022-12-13 18:18:48,508 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 476 transitions. [2022-12-13 18:18:48,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 476 transitions. [2022-12-13 18:18:48,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:48,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 476 transitions. [2022-12-13 18:18:48,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.33333333333333) internal successors, (476), 6 states have internal predecessors, (476), 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) [2022-12-13 18:18:48,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2022-12-13 18:18:48,510 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2022-12-13 18:18:48,510 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 378 flow. Second operand 6 states and 476 transitions. [2022-12-13 18:18:48,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 642 flow [2022-12-13 18:18:48,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 610 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-12-13 18:18:48,513 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 452 flow [2022-12-13 18:18:48,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2022-12-13 18:18:48,514 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 36 predicate places. [2022-12-13 18:18:48,514 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 452 flow [2022-12-13 18:18:48,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:48,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:48,514 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:48,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:18:48,514 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:48,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1817096565, now seen corresponding path program 2 times [2022-12-13 18:18:48,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:48,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466816361] [2022-12-13 18:18:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:48,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:48,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:48,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466816361] [2022-12-13 18:18:48,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466816361] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:48,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:48,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:18:48,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841331930] [2022-12-13 18:18:48,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:48,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:18:48,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:48,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:18:48,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:18:48,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2022-12-13 18:18:48,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:48,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:48,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2022-12-13 18:18:48,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:48,670 INFO L130 PetriNetUnfolder]: 118/235 cut-off events. [2022-12-13 18:18:48,671 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2022-12-13 18:18:48,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 235 events. 118/235 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 913 event pairs, 20 based on Foata normal form. 8/243 useless extension candidates. Maximal degree in co-relation 1054. Up to 94 conditions per place. [2022-12-13 18:18:48,673 INFO L137 encePairwiseOnDemand]: 163/170 looper letters, 53 selfloop transitions, 22 changer transitions 1/76 dead transitions. [2022-12-13 18:18:48,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 829 flow [2022-12-13 18:18:48,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:18:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:18:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 635 transitions. [2022-12-13 18:18:48,675 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46691176470588236 [2022-12-13 18:18:48,675 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 635 transitions. [2022-12-13 18:18:48,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 635 transitions. [2022-12-13 18:18:48,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:48,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 635 transitions. [2022-12-13 18:18:48,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 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) [2022-12-13 18:18:48,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 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) [2022-12-13 18:18:48,679 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 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) [2022-12-13 18:18:48,679 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 452 flow. Second operand 8 states and 635 transitions. [2022-12-13 18:18:48,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 829 flow [2022-12-13 18:18:48,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 766 flow, removed 30 selfloop flow, removed 2 redundant places. [2022-12-13 18:18:48,686 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 550 flow [2022-12-13 18:18:48,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=550, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2022-12-13 18:18:48,687 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2022-12-13 18:18:48,687 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 550 flow [2022-12-13 18:18:48,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:48,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:48,688 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:48,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:18:48,688 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:48,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:48,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1817094857, now seen corresponding path program 2 times [2022-12-13 18:18:48,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:48,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522974723] [2022-12-13 18:18:48,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:48,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:48,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:48,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522974723] [2022-12-13 18:18:48,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522974723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:48,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:48,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:18:48,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120732977] [2022-12-13 18:18:48,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:48,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:18:48,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:48,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:18:48,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:18:48,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2022-12-13 18:18:48,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 550 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:48,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:48,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2022-12-13 18:18:48,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:48,840 INFO L130 PetriNetUnfolder]: 118/231 cut-off events. [2022-12-13 18:18:48,840 INFO L131 PetriNetUnfolder]: For 1715/1715 co-relation queries the response was YES. [2022-12-13 18:18:48,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 231 events. 118/231 cut-off events. For 1715/1715 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 864 event pairs, 16 based on Foata normal form. 6/237 useless extension candidates. Maximal degree in co-relation 1226. Up to 188 conditions per place. [2022-12-13 18:18:48,841 INFO L137 encePairwiseOnDemand]: 164/170 looper letters, 49 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2022-12-13 18:18:48,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 62 transitions, 717 flow [2022-12-13 18:18:48,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:18:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:18:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2022-12-13 18:18:48,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2022-12-13 18:18:48,842 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2022-12-13 18:18:48,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2022-12-13 18:18:48,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:48,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2022-12-13 18:18:48,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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) [2022-12-13 18:18:48,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 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) [2022-12-13 18:18:48,844 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 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) [2022-12-13 18:18:48,844 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 550 flow. Second operand 5 states and 400 transitions. [2022-12-13 18:18:48,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 62 transitions, 717 flow [2022-12-13 18:18:48,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 667 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-12-13 18:18:48,849 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 527 flow [2022-12-13 18:18:48,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=527, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2022-12-13 18:18:48,849 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 45 predicate places. [2022-12-13 18:18:48,849 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 527 flow [2022-12-13 18:18:48,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:48,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:48,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:48,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 18:18:48,850 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:48,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:48,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1817090985, now seen corresponding path program 3 times [2022-12-13 18:18:48,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:48,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423386299] [2022-12-13 18:18:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:48,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:48,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:48,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423386299] [2022-12-13 18:18:48,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423386299] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:48,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:48,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:18:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466122158] [2022-12-13 18:18:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:48,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:18:48,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:18:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:18:48,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2022-12-13 18:18:48,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 527 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:48,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:48,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2022-12-13 18:18:48,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:48,987 INFO L130 PetriNetUnfolder]: 113/216 cut-off events. [2022-12-13 18:18:48,987 INFO L131 PetriNetUnfolder]: For 1609/1609 co-relation queries the response was YES. [2022-12-13 18:18:48,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 216 events. 113/216 cut-off events. For 1609/1609 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 748 event pairs, 36 based on Foata normal form. 4/220 useless extension candidates. Maximal degree in co-relation 1156. Up to 140 conditions per place. [2022-12-13 18:18:48,988 INFO L137 encePairwiseOnDemand]: 164/170 looper letters, 47 selfloop transitions, 13 changer transitions 0/60 dead transitions. [2022-12-13 18:18:48,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 60 transitions, 691 flow [2022-12-13 18:18:48,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:18:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:18:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 401 transitions. [2022-12-13 18:18:48,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4717647058823529 [2022-12-13 18:18:48,990 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 401 transitions. [2022-12-13 18:18:48,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 401 transitions. [2022-12-13 18:18:48,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:48,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 401 transitions. [2022-12-13 18:18:48,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 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) [2022-12-13 18:18:48,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 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) [2022-12-13 18:18:48,991 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 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) [2022-12-13 18:18:48,991 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 527 flow. Second operand 5 states and 401 transitions. [2022-12-13 18:18:48,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 60 transitions, 691 flow [2022-12-13 18:18:48,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 60 transitions, 647 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-13 18:18:48,995 INFO L231 Difference]: Finished difference. Result has 73 places, 50 transitions, 499 flow [2022-12-13 18:18:48,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=499, PETRI_PLACES=73, PETRI_TRANSITIONS=50} [2022-12-13 18:18:48,996 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2022-12-13 18:18:48,996 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 50 transitions, 499 flow [2022-12-13 18:18:48,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:48,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:48,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:48,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 18:18:48,997 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1831397327, now seen corresponding path program 3 times [2022-12-13 18:18:48,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:48,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312833828] [2022-12-13 18:18:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:48,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:49,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:49,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312833828] [2022-12-13 18:18:49,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312833828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:49,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:49,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:18:49,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405871394] [2022-12-13 18:18:49,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:49,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:18:49,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:49,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:18:49,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:18:49,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2022-12-13 18:18:49,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 50 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:49,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:49,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2022-12-13 18:18:49,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:49,153 INFO L130 PetriNetUnfolder]: 146/281 cut-off events. [2022-12-13 18:18:49,153 INFO L131 PetriNetUnfolder]: For 1784/1784 co-relation queries the response was YES. [2022-12-13 18:18:49,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 281 events. 146/281 cut-off events. For 1784/1784 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1100 event pairs, 28 based on Foata normal form. 2/283 useless extension candidates. Maximal degree in co-relation 1490. Up to 107 conditions per place. [2022-12-13 18:18:49,156 INFO L137 encePairwiseOnDemand]: 162/170 looper letters, 50 selfloop transitions, 28 changer transitions 2/80 dead transitions. [2022-12-13 18:18:49,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 913 flow [2022-12-13 18:18:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:18:49,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:18:49,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 550 transitions. [2022-12-13 18:18:49,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46218487394957986 [2022-12-13 18:18:49,158 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 550 transitions. [2022-12-13 18:18:49,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 550 transitions. [2022-12-13 18:18:49,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:49,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 550 transitions. [2022-12-13 18:18:49,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 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) [2022-12-13 18:18:49,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 170.0) internal successors, (1360), 8 states have internal predecessors, (1360), 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) [2022-12-13 18:18:49,162 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 170.0) internal successors, (1360), 8 states have internal predecessors, (1360), 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) [2022-12-13 18:18:49,162 INFO L175 Difference]: Start difference. First operand has 73 places, 50 transitions, 499 flow. Second operand 7 states and 550 transitions. [2022-12-13 18:18:49,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 913 flow [2022-12-13 18:18:49,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 885 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:18:49,170 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 707 flow [2022-12-13 18:18:49,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=707, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2022-12-13 18:18:49,170 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 55 predicate places. [2022-12-13 18:18:49,170 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 707 flow [2022-12-13 18:18:49,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:49,171 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:49,171 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:49,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 18:18:49,171 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:49,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:49,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1832289975, now seen corresponding path program 4 times [2022-12-13 18:18:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:49,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613411091] [2022-12-13 18:18:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:49,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:49,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:49,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613411091] [2022-12-13 18:18:49,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613411091] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:49,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:49,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:18:49,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587493960] [2022-12-13 18:18:49,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:49,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:18:49,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:49,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:18:49,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:18:49,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2022-12-13 18:18:49,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 707 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:49,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:49,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2022-12-13 18:18:49,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:49,331 INFO L130 PetriNetUnfolder]: 126/249 cut-off events. [2022-12-13 18:18:49,331 INFO L131 PetriNetUnfolder]: For 1954/1954 co-relation queries the response was YES. [2022-12-13 18:18:49,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 249 events. 126/249 cut-off events. For 1954/1954 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 965 event pairs, 11 based on Foata normal form. 12/261 useless extension candidates. Maximal degree in co-relation 1456. Up to 102 conditions per place. [2022-12-13 18:18:49,334 INFO L137 encePairwiseOnDemand]: 163/170 looper letters, 52 selfloop transitions, 20 changer transitions 2/74 dead transitions. [2022-12-13 18:18:49,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 74 transitions, 940 flow [2022-12-13 18:18:49,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:18:49,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:18:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 476 transitions. [2022-12-13 18:18:49,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2022-12-13 18:18:49,336 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 476 transitions. [2022-12-13 18:18:49,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 476 transitions. [2022-12-13 18:18:49,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:49,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 476 transitions. [2022-12-13 18:18:49,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.33333333333333) internal successors, (476), 6 states have internal predecessors, (476), 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) [2022-12-13 18:18:49,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2022-12-13 18:18:49,338 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2022-12-13 18:18:49,338 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 707 flow. Second operand 6 states and 476 transitions. [2022-12-13 18:18:49,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 74 transitions, 940 flow [2022-12-13 18:18:49,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 74 transitions, 901 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-12-13 18:18:49,344 INFO L231 Difference]: Finished difference. Result has 86 places, 57 transitions, 684 flow [2022-12-13 18:18:49,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=86, PETRI_TRANSITIONS=57} [2022-12-13 18:18:49,345 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 60 predicate places. [2022-12-13 18:18:49,345 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 57 transitions, 684 flow [2022-12-13 18:18:49,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:49,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:49,345 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:49,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 18:18:49,345 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:49,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:49,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1832284395, now seen corresponding path program 5 times [2022-12-13 18:18:49,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:49,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200963005] [2022-12-13 18:18:49,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:49,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:49,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:49,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200963005] [2022-12-13 18:18:49,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200963005] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:49,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:49,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:18:49,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547921307] [2022-12-13 18:18:49,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:49,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:18:49,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:49,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:18:49,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:18:49,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2022-12-13 18:18:49,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 57 transitions, 684 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:49,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:49,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2022-12-13 18:18:49,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:49,500 INFO L130 PetriNetUnfolder]: 119/224 cut-off events. [2022-12-13 18:18:49,500 INFO L131 PetriNetUnfolder]: For 1953/1953 co-relation queries the response was YES. [2022-12-13 18:18:49,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1420 conditions, 224 events. 119/224 cut-off events. For 1953/1953 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 779 event pairs, 13 based on Foata normal form. 4/228 useless extension candidates. Maximal degree in co-relation 1352. Up to 167 conditions per place. [2022-12-13 18:18:49,503 INFO L137 encePairwiseOnDemand]: 164/170 looper letters, 48 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2022-12-13 18:18:49,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 61 transitions, 802 flow [2022-12-13 18:18:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:18:49,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:18:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2022-12-13 18:18:49,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46588235294117647 [2022-12-13 18:18:49,505 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 396 transitions. [2022-12-13 18:18:49,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 396 transitions. [2022-12-13 18:18:49,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:49,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 396 transitions. [2022-12-13 18:18:49,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 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) [2022-12-13 18:18:49,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 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) [2022-12-13 18:18:49,507 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 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) [2022-12-13 18:18:49,507 INFO L175 Difference]: Start difference. First operand has 86 places, 57 transitions, 684 flow. Second operand 5 states and 396 transitions. [2022-12-13 18:18:49,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 61 transitions, 802 flow [2022-12-13 18:18:49,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 61 transitions, 736 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-12-13 18:18:49,515 INFO L231 Difference]: Finished difference. Result has 79 places, 54 transitions, 601 flow [2022-12-13 18:18:49,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=601, PETRI_PLACES=79, PETRI_TRANSITIONS=54} [2022-12-13 18:18:49,516 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2022-12-13 18:18:49,516 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 54 transitions, 601 flow [2022-12-13 18:18:49,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:49,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:49,516 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:49,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 18:18:49,517 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:49,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:49,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1832288239, now seen corresponding path program 1 times [2022-12-13 18:18:49,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:49,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103799010] [2022-12-13 18:18:49,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:49,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:49,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:49,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103799010] [2022-12-13 18:18:49,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103799010] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:18:49,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353914278] [2022-12-13 18:18:49,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:49,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:49,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:18:49,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:18:49,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:18:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:18:49,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:18:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:49,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:18:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:49,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353914278] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 18:18:49,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:18:49,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2022-12-13 18:18:49,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993599609] [2022-12-13 18:18:49,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:49,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:18:49,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:49,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:18:49,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:18:49,689 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2022-12-13 18:18:49,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 54 transitions, 601 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:49,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:49,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2022-12-13 18:18:49,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:49,796 INFO L130 PetriNetUnfolder]: 115/216 cut-off events. [2022-12-13 18:18:49,796 INFO L131 PetriNetUnfolder]: For 1640/1640 co-relation queries the response was YES. [2022-12-13 18:18:49,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 216 events. 115/216 cut-off events. For 1640/1640 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 746 event pairs, 22 based on Foata normal form. 6/222 useless extension candidates. Maximal degree in co-relation 1242. Up to 130 conditions per place. [2022-12-13 18:18:49,799 INFO L137 encePairwiseOnDemand]: 161/170 looper letters, 49 selfloop transitions, 25 changer transitions 0/74 dead transitions. [2022-12-13 18:18:49,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 74 transitions, 854 flow [2022-12-13 18:18:49,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:18:49,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:18:49,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 483 transitions. [2022-12-13 18:18:49,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47352941176470587 [2022-12-13 18:18:49,801 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 483 transitions. [2022-12-13 18:18:49,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 483 transitions. [2022-12-13 18:18:49,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:49,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 483 transitions. [2022-12-13 18:18:49,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 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) [2022-12-13 18:18:49,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2022-12-13 18:18:49,804 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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) [2022-12-13 18:18:49,804 INFO L175 Difference]: Start difference. First operand has 79 places, 54 transitions, 601 flow. Second operand 6 states and 483 transitions. [2022-12-13 18:18:49,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 74 transitions, 854 flow [2022-12-13 18:18:49,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 814 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-13 18:18:49,813 INFO L231 Difference]: Finished difference. Result has 82 places, 58 transitions, 681 flow [2022-12-13 18:18:49,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=681, PETRI_PLACES=82, PETRI_TRANSITIONS=58} [2022-12-13 18:18:49,813 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2022-12-13 18:18:49,814 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 58 transitions, 681 flow [2022-12-13 18:18:49,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:49,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:49,814 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:49,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:18:50,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:50,015 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:50,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:50,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1832291057, now seen corresponding path program 4 times [2022-12-13 18:18:50,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:50,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362639752] [2022-12-13 18:18:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:50,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:50,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:50,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362639752] [2022-12-13 18:18:50,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362639752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:18:50,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:18:50,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:18:50,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109360440] [2022-12-13 18:18:50,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:18:50,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:18:50,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:50,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:18:50,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:18:50,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2022-12-13 18:18:50,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 58 transitions, 681 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:50,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:50,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2022-12-13 18:18:50,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:50,288 INFO L130 PetriNetUnfolder]: 111/208 cut-off events. [2022-12-13 18:18:50,289 INFO L131 PetriNetUnfolder]: For 1624/1624 co-relation queries the response was YES. [2022-12-13 18:18:50,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1346 conditions, 208 events. 111/208 cut-off events. For 1624/1624 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 692 event pairs, 20 based on Foata normal form. 2/210 useless extension candidates. Maximal degree in co-relation 1073. Up to 92 conditions per place. [2022-12-13 18:18:50,290 INFO L137 encePairwiseOnDemand]: 163/170 looper letters, 49 selfloop transitions, 23 changer transitions 1/73 dead transitions. [2022-12-13 18:18:50,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 73 transitions, 896 flow [2022-12-13 18:18:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:18:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:18:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 628 transitions. [2022-12-13 18:18:50,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46176470588235297 [2022-12-13 18:18:50,292 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 628 transitions. [2022-12-13 18:18:50,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 628 transitions. [2022-12-13 18:18:50,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:50,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 628 transitions. [2022-12-13 18:18:50,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.5) internal successors, (628), 8 states have internal predecessors, (628), 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) [2022-12-13 18:18:50,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 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) [2022-12-13 18:18:50,294 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 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) [2022-12-13 18:18:50,294 INFO L175 Difference]: Start difference. First operand has 82 places, 58 transitions, 681 flow. Second operand 8 states and 628 transitions. [2022-12-13 18:18:50,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 73 transitions, 896 flow [2022-12-13 18:18:50,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 73 transitions, 888 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 18:18:50,299 INFO L231 Difference]: Finished difference. Result has 88 places, 55 transitions, 682 flow [2022-12-13 18:18:50,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=682, PETRI_PLACES=88, PETRI_TRANSITIONS=55} [2022-12-13 18:18:50,299 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 62 predicate places. [2022-12-13 18:18:50,299 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 55 transitions, 682 flow [2022-12-13 18:18:50,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2022-12-13 18:18:50,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:50,300 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:50,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 18:18:50,300 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:50,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:50,300 INFO L85 PathProgramCache]: Analyzing trace with hash -265948305, now seen corresponding path program 1 times [2022-12-13 18:18:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:50,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087646492] [2022-12-13 18:18:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:50,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:50,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087646492] [2022-12-13 18:18:50,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087646492] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:18:50,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015396878] [2022-12-13 18:18:50,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:50,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:50,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:18:50,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:18:50,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:18:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:50,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:18:50,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:18:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:50,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:18:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:50,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015396878] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:18:50,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:18:50,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 18:18:50,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474791525] [2022-12-13 18:18:50,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:18:50,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 18:18:50,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:50,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 18:18:50,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:18:50,651 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 170 [2022-12-13 18:18:50,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 55 transitions, 682 flow. Second operand has 20 states, 20 states have (on average 71.5) internal successors, (1430), 20 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) [2022-12-13 18:18:50,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:50,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 170 [2022-12-13 18:18:50,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:51,037 INFO L130 PetriNetUnfolder]: 117/216 cut-off events. [2022-12-13 18:18:51,037 INFO L131 PetriNetUnfolder]: For 1879/1879 co-relation queries the response was YES. [2022-12-13 18:18:51,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 216 events. 117/216 cut-off events. For 1879/1879 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 743 event pairs, 0 based on Foata normal form. 8/224 useless extension candidates. Maximal degree in co-relation 1290. Up to 57 conditions per place. [2022-12-13 18:18:51,038 INFO L137 encePairwiseOnDemand]: 161/170 looper letters, 35 selfloop transitions, 32 changer transitions 28/95 dead transitions. [2022-12-13 18:18:51,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 95 transitions, 1123 flow [2022-12-13 18:18:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 18:18:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 18:18:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1405 transitions. [2022-12-13 18:18:51,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43498452012383904 [2022-12-13 18:18:51,040 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1405 transitions. [2022-12-13 18:18:51,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1405 transitions. [2022-12-13 18:18:51,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:51,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1405 transitions. [2022-12-13 18:18:51,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 73.94736842105263) internal successors, (1405), 19 states have internal predecessors, (1405), 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) [2022-12-13 18:18:51,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 170.0) internal successors, (3400), 20 states have internal predecessors, (3400), 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) [2022-12-13 18:18:51,047 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 170.0) internal successors, (3400), 20 states have internal predecessors, (3400), 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) [2022-12-13 18:18:51,047 INFO L175 Difference]: Start difference. First operand has 88 places, 55 transitions, 682 flow. Second operand 19 states and 1405 transitions. [2022-12-13 18:18:51,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 95 transitions, 1123 flow [2022-12-13 18:18:51,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 1007 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-12-13 18:18:51,055 INFO L231 Difference]: Finished difference. Result has 96 places, 43 transitions, 534 flow [2022-12-13 18:18:51,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=534, PETRI_PLACES=96, PETRI_TRANSITIONS=43} [2022-12-13 18:18:51,056 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 70 predicate places. [2022-12-13 18:18:51,056 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 43 transitions, 534 flow [2022-12-13 18:18:51,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 71.5) internal successors, (1430), 20 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) [2022-12-13 18:18:51,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:51,057 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:51,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:18:51,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:51,257 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:51,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:51,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1058221497, now seen corresponding path program 1 times [2022-12-13 18:18:51,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:51,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463350284] [2022-12-13 18:18:51,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:51,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:51,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:51,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463350284] [2022-12-13 18:18:51,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463350284] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:18:51,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693738129] [2022-12-13 18:18:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:51,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:51,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:18:51,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:18:51,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:18:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:51,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:18:51,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:18:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:51,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:18:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:51,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693738129] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:18:51,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:18:51,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-13 18:18:51,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928834790] [2022-12-13 18:18:51,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:18:51,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:18:51,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:51,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:18:51,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:18:51,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2022-12-13 18:18:51,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 43 transitions, 534 flow. Second operand has 11 states, 11 states have (on average 74.45454545454545) internal successors, (819), 11 states have internal predecessors, (819), 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) [2022-12-13 18:18:51,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:51,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2022-12-13 18:18:51,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:51,600 INFO L130 PetriNetUnfolder]: 86/159 cut-off events. [2022-12-13 18:18:51,600 INFO L131 PetriNetUnfolder]: For 1173/1173 co-relation queries the response was YES. [2022-12-13 18:18:51,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 159 events. 86/159 cut-off events. For 1173/1173 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 474 event pairs, 3 based on Foata normal form. 4/163 useless extension candidates. Maximal degree in co-relation 980. Up to 61 conditions per place. [2022-12-13 18:18:51,602 INFO L137 encePairwiseOnDemand]: 164/170 looper letters, 37 selfloop transitions, 28 changer transitions 0/65 dead transitions. [2022-12-13 18:18:51,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 65 transitions, 846 flow [2022-12-13 18:18:51,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:18:51,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 18:18:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 772 transitions. [2022-12-13 18:18:51,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4541176470588235 [2022-12-13 18:18:51,604 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 772 transitions. [2022-12-13 18:18:51,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 772 transitions. [2022-12-13 18:18:51,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:51,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 772 transitions. [2022-12-13 18:18:51,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.2) internal successors, (772), 10 states have internal predecessors, (772), 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) [2022-12-13 18:18:51,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 170.0) internal successors, (1870), 11 states have internal predecessors, (1870), 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) [2022-12-13 18:18:51,608 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 170.0) internal successors, (1870), 11 states have internal predecessors, (1870), 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) [2022-12-13 18:18:51,608 INFO L175 Difference]: Start difference. First operand has 96 places, 43 transitions, 534 flow. Second operand 10 states and 772 transitions. [2022-12-13 18:18:51,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 65 transitions, 846 flow [2022-12-13 18:18:51,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 65 transitions, 596 flow, removed 46 selfloop flow, removed 24 redundant places. [2022-12-13 18:18:51,613 INFO L231 Difference]: Finished difference. Result has 73 places, 49 transitions, 497 flow [2022-12-13 18:18:51,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=497, PETRI_PLACES=73, PETRI_TRANSITIONS=49} [2022-12-13 18:18:51,614 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2022-12-13 18:18:51,614 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 49 transitions, 497 flow [2022-12-13 18:18:51,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 74.45454545454545) internal successors, (819), 11 states have internal predecessors, (819), 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) [2022-12-13 18:18:51,614 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:51,615 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:51,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:18:51,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:51,816 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:51,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:51,817 INFO L85 PathProgramCache]: Analyzing trace with hash -449778195, now seen corresponding path program 2 times [2022-12-13 18:18:51,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:51,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185063155] [2022-12-13 18:18:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:51,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:51,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:51,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185063155] [2022-12-13 18:18:51,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185063155] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:18:51,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215481688] [2022-12-13 18:18:51,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:18:51,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:51,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:18:51,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:18:51,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:18:52,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:18:52,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:18:52,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:18:52,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:18:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:52,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:18:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:52,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215481688] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:18:52,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:18:52,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 18:18:52,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121624263] [2022-12-13 18:18:52,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:18:52,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 18:18:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 18:18:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:18:52,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 170 [2022-12-13 18:18:52,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 49 transitions, 497 flow. Second operand has 20 states, 20 states have (on average 71.5) internal successors, (1430), 20 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) [2022-12-13 18:18:52,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:52,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 170 [2022-12-13 18:18:52,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:52,480 INFO L130 PetriNetUnfolder]: 92/169 cut-off events. [2022-12-13 18:18:52,481 INFO L131 PetriNetUnfolder]: For 974/974 co-relation queries the response was YES. [2022-12-13 18:18:52,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 169 events. 92/169 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 505 event pairs, 2 based on Foata normal form. 10/179 useless extension candidates. Maximal degree in co-relation 930. Up to 61 conditions per place. [2022-12-13 18:18:52,482 INFO L137 encePairwiseOnDemand]: 162/170 looper letters, 26 selfloop transitions, 16 changer transitions 29/71 dead transitions. [2022-12-13 18:18:52,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 71 transitions, 795 flow [2022-12-13 18:18:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:18:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 18:18:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 884 transitions. [2022-12-13 18:18:52,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2022-12-13 18:18:52,484 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 884 transitions. [2022-12-13 18:18:52,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 884 transitions. [2022-12-13 18:18:52,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:52,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 884 transitions. [2022-12-13 18:18:52,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 73.66666666666667) internal successors, (884), 12 states have internal predecessors, (884), 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) [2022-12-13 18:18:52,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 170.0) internal successors, (2210), 13 states have internal predecessors, (2210), 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) [2022-12-13 18:18:52,488 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 170.0) internal successors, (2210), 13 states have internal predecessors, (2210), 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) [2022-12-13 18:18:52,488 INFO L175 Difference]: Start difference. First operand has 73 places, 49 transitions, 497 flow. Second operand 12 states and 884 transitions. [2022-12-13 18:18:52,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 71 transitions, 795 flow [2022-12-13 18:18:52,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 71 transitions, 714 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-12-13 18:18:52,492 INFO L231 Difference]: Finished difference. Result has 80 places, 34 transitions, 316 flow [2022-12-13 18:18:52,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=316, PETRI_PLACES=80, PETRI_TRANSITIONS=34} [2022-12-13 18:18:52,493 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2022-12-13 18:18:52,493 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 34 transitions, 316 flow [2022-12-13 18:18:52,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 71.5) internal successors, (1430), 20 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) [2022-12-13 18:18:52,493 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:52,494 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:52,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:18:52,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 18:18:52,695 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:52,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash -495245895, now seen corresponding path program 3 times [2022-12-13 18:18:52,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:52,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87050997] [2022-12-13 18:18:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:52,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:52,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:52,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87050997] [2022-12-13 18:18:52,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87050997] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:18:52,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614151764] [2022-12-13 18:18:52,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:18:52,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:52,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:18:52,863 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:18:52,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:18:52,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 18:18:52,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:18:52,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:18:52,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:18:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:52,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:18:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:53,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614151764] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:18:53,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:18:53,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-12-13 18:18:53,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891422237] [2022-12-13 18:18:53,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:18:53,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 18:18:53,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:53,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 18:18:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:18:53,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 170 [2022-12-13 18:18:53,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 34 transitions, 316 flow. Second operand has 19 states, 19 states have (on average 71.57894736842105) internal successors, (1360), 19 states have internal predecessors, (1360), 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) [2022-12-13 18:18:53,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:53,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 170 [2022-12-13 18:18:53,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:53,468 INFO L130 PetriNetUnfolder]: 71/144 cut-off events. [2022-12-13 18:18:53,468 INFO L131 PetriNetUnfolder]: For 760/760 co-relation queries the response was YES. [2022-12-13 18:18:53,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 144 events. 71/144 cut-off events. For 760/760 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 456 event pairs, 1 based on Foata normal form. 14/158 useless extension candidates. Maximal degree in co-relation 814. Up to 43 conditions per place. [2022-12-13 18:18:53,469 INFO L137 encePairwiseOnDemand]: 162/170 looper letters, 25 selfloop transitions, 31 changer transitions 14/70 dead transitions. [2022-12-13 18:18:53,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 70 transitions, 739 flow [2022-12-13 18:18:53,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 18:18:53,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 18:18:53,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1390 transitions. [2022-12-13 18:18:53,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43034055727554177 [2022-12-13 18:18:53,471 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1390 transitions. [2022-12-13 18:18:53,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1390 transitions. [2022-12-13 18:18:53,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:53,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1390 transitions. [2022-12-13 18:18:53,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 73.15789473684211) internal successors, (1390), 19 states have internal predecessors, (1390), 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) [2022-12-13 18:18:53,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 170.0) internal successors, (3400), 20 states have internal predecessors, (3400), 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) [2022-12-13 18:18:53,474 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 170.0) internal successors, (3400), 20 states have internal predecessors, (3400), 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) [2022-12-13 18:18:53,474 INFO L175 Difference]: Start difference. First operand has 80 places, 34 transitions, 316 flow. Second operand 19 states and 1390 transitions. [2022-12-13 18:18:53,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 70 transitions, 739 flow [2022-12-13 18:18:53,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 638 flow, removed 35 selfloop flow, removed 11 redundant places. [2022-12-13 18:18:53,477 INFO L231 Difference]: Finished difference. Result has 79 places, 41 transitions, 442 flow [2022-12-13 18:18:53,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=442, PETRI_PLACES=79, PETRI_TRANSITIONS=41} [2022-12-13 18:18:53,477 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2022-12-13 18:18:53,477 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 41 transitions, 442 flow [2022-12-13 18:18:53,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 71.57894736842105) internal successors, (1360), 19 states have internal predecessors, (1360), 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) [2022-12-13 18:18:53,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:53,478 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:53,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:18:53,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 18:18:53,679 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash -966238815, now seen corresponding path program 4 times [2022-12-13 18:18:53,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:53,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382981654] [2022-12-13 18:18:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:53,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:53,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:53,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382981654] [2022-12-13 18:18:53,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382981654] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:18:53,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497577930] [2022-12-13 18:18:53,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:18:53,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:53,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:18:53,849 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:18:53,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:18:53,897 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:18:53,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:18:53,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:18:53,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:18:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:53,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:18:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:54,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497577930] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:18:54,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:18:54,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 18:18:54,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269515911] [2022-12-13 18:18:54,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:18:54,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 18:18:54,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:54,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 18:18:54,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:18:54,123 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 170 [2022-12-13 18:18:54,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 41 transitions, 442 flow. Second operand has 20 states, 20 states have (on average 71.5) internal successors, (1430), 20 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) [2022-12-13 18:18:54,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:54,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 170 [2022-12-13 18:18:54,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:54,322 INFO L130 PetriNetUnfolder]: 71/148 cut-off events. [2022-12-13 18:18:54,322 INFO L131 PetriNetUnfolder]: For 661/661 co-relation queries the response was YES. [2022-12-13 18:18:54,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 148 events. 71/148 cut-off events. For 661/661 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 481 event pairs, 0 based on Foata normal form. 10/158 useless extension candidates. Maximal degree in co-relation 831. Up to 47 conditions per place. [2022-12-13 18:18:54,323 INFO L137 encePairwiseOnDemand]: 162/170 looper letters, 26 selfloop transitions, 19 changer transitions 22/67 dead transitions. [2022-12-13 18:18:54,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 67 transitions, 807 flow [2022-12-13 18:18:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 18:18:54,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 18:18:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1095 transitions. [2022-12-13 18:18:54,326 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4294117647058823 [2022-12-13 18:18:54,326 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1095 transitions. [2022-12-13 18:18:54,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1095 transitions. [2022-12-13 18:18:54,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:54,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1095 transitions. [2022-12-13 18:18:54,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 73.0) internal successors, (1095), 15 states have internal predecessors, (1095), 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) [2022-12-13 18:18:54,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 170.0) internal successors, (2720), 16 states have internal predecessors, (2720), 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) [2022-12-13 18:18:54,330 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 170.0) internal successors, (2720), 16 states have internal predecessors, (2720), 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) [2022-12-13 18:18:54,331 INFO L175 Difference]: Start difference. First operand has 79 places, 41 transitions, 442 flow. Second operand 15 states and 1095 transitions. [2022-12-13 18:18:54,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 67 transitions, 807 flow [2022-12-13 18:18:54,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 67 transitions, 676 flow, removed 39 selfloop flow, removed 10 redundant places. [2022-12-13 18:18:54,335 INFO L231 Difference]: Finished difference. Result has 82 places, 37 transitions, 367 flow [2022-12-13 18:18:54,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=367, PETRI_PLACES=82, PETRI_TRANSITIONS=37} [2022-12-13 18:18:54,335 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2022-12-13 18:18:54,335 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 37 transitions, 367 flow [2022-12-13 18:18:54,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 71.5) internal successors, (1430), 20 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) [2022-12-13 18:18:54,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:54,336 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:54,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:18:54,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 18:18:54,538 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:54,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:54,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1722809255, now seen corresponding path program 5 times [2022-12-13 18:18:54,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:54,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99747946] [2022-12-13 18:18:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:54,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:54,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:54,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99747946] [2022-12-13 18:18:54,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99747946] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:18:54,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084032924] [2022-12-13 18:18:54,690 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 18:18:54,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:54,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:18:54,692 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:18:54,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:18:54,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:18:54,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:18:54,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:18:54,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:18:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:54,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:18:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:54,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084032924] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:18:54,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:18:54,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-12-13 18:18:54,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311849634] [2022-12-13 18:18:54,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:18:54,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:18:54,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:54,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:18:54,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:18:54,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 170 [2022-12-13 18:18:54,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 37 transitions, 367 flow. Second operand has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 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) [2022-12-13 18:18:54,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:54,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 170 [2022-12-13 18:18:54,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:54,908 INFO L130 PetriNetUnfolder]: 45/98 cut-off events. [2022-12-13 18:18:54,908 INFO L131 PetriNetUnfolder]: For 486/486 co-relation queries the response was YES. [2022-12-13 18:18:54,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 98 events. 45/98 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 260 event pairs, 8 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 521. Up to 48 conditions per place. [2022-12-13 18:18:54,909 INFO L137 encePairwiseOnDemand]: 164/170 looper letters, 27 selfloop transitions, 21 changer transitions 0/48 dead transitions. [2022-12-13 18:18:54,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 48 transitions, 498 flow [2022-12-13 18:18:54,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:18:54,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 18:18:54,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 842 transitions. [2022-12-13 18:18:54,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4502673796791444 [2022-12-13 18:18:54,911 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 842 transitions. [2022-12-13 18:18:54,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 842 transitions. [2022-12-13 18:18:54,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:54,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 842 transitions. [2022-12-13 18:18:54,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.54545454545455) internal successors, (842), 11 states have internal predecessors, (842), 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) [2022-12-13 18:18:54,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 170.0) internal successors, (2040), 12 states have internal predecessors, (2040), 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) [2022-12-13 18:18:54,913 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 170.0) internal successors, (2040), 12 states have internal predecessors, (2040), 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) [2022-12-13 18:18:54,914 INFO L175 Difference]: Start difference. First operand has 82 places, 37 transitions, 367 flow. Second operand 11 states and 842 transitions. [2022-12-13 18:18:54,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 48 transitions, 498 flow [2022-12-13 18:18:54,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 48 transitions, 435 flow, removed 8 selfloop flow, removed 13 redundant places. [2022-12-13 18:18:54,915 INFO L231 Difference]: Finished difference. Result has 72 places, 36 transitions, 334 flow [2022-12-13 18:18:54,916 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=334, PETRI_PLACES=72, PETRI_TRANSITIONS=36} [2022-12-13 18:18:54,916 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2022-12-13 18:18:54,916 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 36 transitions, 334 flow [2022-12-13 18:18:54,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 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) [2022-12-13 18:18:54,916 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:18:54,916 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:54,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 18:18:55,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 18:18:55,118 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 18:18:55,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash -932279865, now seen corresponding path program 6 times [2022-12-13 18:18:55,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:55,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019074924] [2022-12-13 18:18:55,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:55,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:55,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:55,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019074924] [2022-12-13 18:18:55,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019074924] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:18:55,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397356891] [2022-12-13 18:18:55,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 18:18:55,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:55,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:18:55,276 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:18:55,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 18:18:55,328 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 18:18:55,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:18:55,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:18:55,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:18:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:55,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:18:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:18:55,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397356891] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:18:55,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:18:55,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 18:18:55,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053141055] [2022-12-13 18:18:55,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:18:55,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 18:18:55,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:55,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 18:18:55,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:18:55,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 170 [2022-12-13 18:18:55,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 36 transitions, 334 flow. Second operand has 20 states, 20 states have (on average 71.5) internal successors, (1430), 20 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) [2022-12-13 18:18:55,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:18:55,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 170 [2022-12-13 18:18:55,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:18:55,693 INFO L130 PetriNetUnfolder]: 42/93 cut-off events. [2022-12-13 18:18:55,693 INFO L131 PetriNetUnfolder]: For 440/440 co-relation queries the response was YES. [2022-12-13 18:18:55,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 93 events. 42/93 cut-off events. For 440/440 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 245 event pairs, 1 based on Foata normal form. 12/105 useless extension candidates. Maximal degree in co-relation 427. Up to 23 conditions per place. [2022-12-13 18:18:55,694 INFO L137 encePairwiseOnDemand]: 162/170 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2022-12-13 18:18:55,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 46 transitions, 452 flow [2022-12-13 18:18:55,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:18:55,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 18:18:55,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1017 transitions. [2022-12-13 18:18:55,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4273109243697479 [2022-12-13 18:18:55,695 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1017 transitions. [2022-12-13 18:18:55,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1017 transitions. [2022-12-13 18:18:55,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:18:55,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1017 transitions. [2022-12-13 18:18:55,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 72.64285714285714) internal successors, (1017), 14 states have internal predecessors, (1017), 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) [2022-12-13 18:18:55,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 170.0) internal successors, (2550), 15 states have internal predecessors, (2550), 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) [2022-12-13 18:18:55,698 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 170.0) internal successors, (2550), 15 states have internal predecessors, (2550), 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) [2022-12-13 18:18:55,698 INFO L175 Difference]: Start difference. First operand has 72 places, 36 transitions, 334 flow. Second operand 14 states and 1017 transitions. [2022-12-13 18:18:55,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 46 transitions, 452 flow [2022-12-13 18:18:55,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 46 transitions, 397 flow, removed 7 selfloop flow, removed 9 redundant places. [2022-12-13 18:18:55,700 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2022-12-13 18:18:55,700 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2022-12-13 18:18:55,700 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2022-12-13 18:18:55,700 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2022-12-13 18:18:55,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 71.5) internal successors, (1430), 20 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) [2022-12-13 18:18:55,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-12-13 18:18:55,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-12-13 18:18:55,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-12-13 18:18:55,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-12-13 18:18:55,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-12-13 18:18:55,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 18:18:55,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:55,905 INFO L445 BasicCegarLoop]: Path program histogram: [6, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:55,911 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 18:18:55,911 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:18:55,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:18:55 BasicIcfg [2022-12-13 18:18:55,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:18:55,915 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:18:55,915 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:18:55,916 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:18:55,916 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:18:43" (3/4) ... [2022-12-13 18:18:55,919 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 18:18:55,926 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 18:18:55,926 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 18:18:55,930 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-13 18:18:55,930 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 18:18:55,931 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 18:18:55,931 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 18:18:55,955 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:18:55,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:18:55,956 INFO L158 Benchmark]: Toolchain (without parser) took 12605.77ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 96.7MB in the beginning and 93.2MB in the end (delta: 3.6MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2022-12-13 18:18:55,956 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:18:55,957 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.25ms. Allocated memory is still 130.0MB. Free memory was 96.7MB in the beginning and 85.8MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 18:18:55,957 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.45ms. Allocated memory is still 130.0MB. Free memory was 85.8MB in the beginning and 84.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:18:55,957 INFO L158 Benchmark]: Boogie Preprocessor took 17.21ms. Allocated memory is still 130.0MB. Free memory was 84.1MB in the beginning and 82.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:18:55,957 INFO L158 Benchmark]: RCFGBuilder took 261.48ms. Allocated memory is still 130.0MB. Free memory was 82.7MB in the beginning and 69.0MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 18:18:55,958 INFO L158 Benchmark]: TraceAbstraction took 12085.05ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 68.1MB in the beginning and 96.1MB in the end (delta: -28.0MB). Peak memory consumption was 1.5MB. Max. memory is 16.1GB. [2022-12-13 18:18:55,958 INFO L158 Benchmark]: Witness Printer took 40.45ms. Allocated memory is still 157.3MB. Free memory was 96.1MB in the beginning and 93.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:18:55,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.25ms. Allocated memory is still 130.0MB. Free memory was 96.7MB in the beginning and 85.8MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.45ms. Allocated memory is still 130.0MB. Free memory was 85.8MB in the beginning and 84.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.21ms. Allocated memory is still 130.0MB. Free memory was 84.1MB in the beginning and 82.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 261.48ms. Allocated memory is still 130.0MB. Free memory was 82.7MB in the beginning and 69.0MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12085.05ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 68.1MB in the beginning and 96.1MB in the end (delta: -28.0MB). Peak memory consumption was 1.5MB. Max. memory is 16.1GB. * Witness Printer took 40.45ms. Allocated memory is still 157.3MB. Free memory was 96.1MB in the beginning and 93.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 79 PlacesBefore, 26 PlacesAfterwards, 77 TransitionsBefore, 21 TransitionsAfterwards, 1088 CoEnabledTransitionPairs, 7 FixpointIterations, 29 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 72 TotalNumberOfCompositions, 1037 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 975, independent: 967, independent conditional: 0, independent unconditional: 967, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 514, independent: 510, independent conditional: 0, independent unconditional: 510, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 975, independent: 457, independent conditional: 0, independent unconditional: 457, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 514, unknown conditional: 0, unknown unconditional: 514] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: 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 5 procedures, 127 locations, 18 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: 12.0s, OverallIterations: 28, TraceHistogramMax: 2, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2502 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1994 mSDsluCounter, 1159 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 976 mSDsCounter, 400 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6270 IncrementalHoareTripleChecker+Invalid, 6670 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 400 mSolverCounterUnsat, 183 mSDtfsCounter, 6270 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 393 GetRequests, 98 SyntacticMatches, 4 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=707occurred in iteration=17, InterpolantAutomatonStates: 227, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 356 ConstructedInterpolants, 0 QuantifiedInterpolants, 1549 SizeOfPredicates, 19 NumberOfNonLiveVariables, 804 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 44 InterpolantComputations, 21 PerfectInterpolantSequences, 20/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 18:18:55,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7511ab43-8d45-4b23-b879-82f941a7c11d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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