./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a --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 c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 --- 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-b5237d8 [2022-11-21 16:59:58,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:59:58,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:59:58,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:59:58,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:59:58,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:59:58,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:59:58,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:59:58,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:59:58,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:59:58,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:59:58,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:59:58,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:59:58,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:59:58,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:59:58,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:59:58,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:59:58,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:59:58,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:59:58,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:59:58,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:59:58,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:59:58,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:59:58,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:59:58,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:59:58,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:59:58,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:59:58,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:59:58,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:59:58,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:59:58,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:59:58,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:59:58,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:59:58,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:59:58,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:59:58,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:59:58,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:59:58,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:59:58,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:59:58,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:59:58,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:59:58,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:59:59,022 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:59:59,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:59:59,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:59:59,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:59:59,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:59:59,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:59:59,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:59:59,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:59:59,029 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:59:59,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:59:59,030 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:59:59,030 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:59:59,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:59:59,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:59:59,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:59:59,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:59:59,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:59:59,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:59:59,031 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:59:59,032 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:59:59,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:59:59,032 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:59:59,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:59:59,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:59:59,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:59:59,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:59:59,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:59:59,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:59:59,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:59:59,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:59:59,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:59:59,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:59:59,035 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:59:59,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:59:59,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:59:59,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 [2022-11-21 16:59:59,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:59:59,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:59:59,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:59:59,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:59:59,450 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:59:59,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-21 17:00:02,470 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:00:02,711 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:00:02,712 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-11-21 17:00:02,722 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/data/cbe425d77/fe616d23194c4cd28507df286b80b2f9/FLAGf79c0231f [2022-11-21 17:00:02,736 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/data/cbe425d77/fe616d23194c4cd28507df286b80b2f9 [2022-11-21 17:00:02,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:00:02,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:00:02,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:00:02,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:00:02,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:00:02,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:00:02" (1/1) ... [2022-11-21 17:00:02,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18dfecd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:02, skipping insertion in model container [2022-11-21 17:00:02,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:00:02" (1/1) ... [2022-11-21 17:00:02,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:00:02,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:00:03,115 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_4366dbb1-7667-4418-91cd-2a0e271d89f9/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-21 17:00:03,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:00:03,136 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:00:03,180 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_4366dbb1-7667-4418-91cd-2a0e271d89f9/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-11-21 17:00:03,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:00:03,212 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:00:03,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:03 WrapperNode [2022-11-21 17:00:03,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:00:03,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:00:03,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:00:03,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:00:03,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:03" (1/1) ... [2022-11-21 17:00:03,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:03" (1/1) ... [2022-11-21 17:00:03,298 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 395 [2022-11-21 17:00:03,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:00:03,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:00:03,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:00:03,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:00:03,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:03" (1/1) ... [2022-11-21 17:00:03,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:03" (1/1) ... [2022-11-21 17:00:03,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:03" (1/1) ... [2022-11-21 17:00:03,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:03" (1/1) ... [2022-11-21 17:00:03,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:03" (1/1) ... [2022-11-21 17:00:03,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:03" (1/1) ... [2022-11-21 17:00:03,367 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:03" (1/1) ... [2022-11-21 17:00:03,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:03" (1/1) ... [2022-11-21 17:00:03,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:00:03,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:00:03,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:00:03,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:00:03,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:03" (1/1) ... [2022-11-21 17:00:03,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:00:03,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:00:03,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:00:03,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:00:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:00:03,475 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 17:00:03,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 17:00:03,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 17:00:03,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 17:00:03,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:00:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:00:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:00:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:00:03,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:00:03,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:00:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:00:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:00:03,481 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:00:03,623 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:00:03,625 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:00:04,502 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:00:04,519 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:00:04,519 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 17:00:04,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:00:04 BoogieIcfgContainer [2022-11-21 17:00:04,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:00:04,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:00:04,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:00:04,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:00:04,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:00:02" (1/3) ... [2022-11-21 17:00:04,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e68c6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:00:04, skipping insertion in model container [2022-11-21 17:00:04,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:03" (2/3) ... [2022-11-21 17:00:04,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e68c6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:00:04, skipping insertion in model container [2022-11-21 17:00:04,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:00:04" (3/3) ... [2022-11-21 17:00:04,533 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-11-21 17:00:04,542 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:00:04,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:00:04,553 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2022-11-21 17:00:04,553 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:00:04,719 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 17:00:04,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 546 places, 583 transitions, 1182 flow [2022-11-21 17:00:05,179 INFO L130 PetriNetUnfolder]: 44/581 cut-off events. [2022-11-21 17:00:05,179 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 17:00:05,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 581 events. 44/581 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1853 event pairs, 0 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2022-11-21 17:00:05,201 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 583 transitions, 1182 flow [2022-11-21 17:00:05,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 526 places, 562 transitions, 1133 flow [2022-11-21 17:00:05,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:00:05,246 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;@3670f39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:00:05,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2022-11-21 17:00:05,262 INFO L130 PetriNetUnfolder]: 3/87 cut-off events. [2022-11-21 17:00:05,262 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:00:05,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:05,264 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:05,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-21 17:00:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:05,272 INFO L85 PathProgramCache]: Analyzing trace with hash 25266818, now seen corresponding path program 1 times [2022-11-21 17:00:05,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:05,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385069264] [2022-11-21 17:00:05,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:05,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:05,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:05,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385069264] [2022-11-21 17:00:05,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385069264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:05,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:05,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:00:05,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511164399] [2022-11-21 17:00:05,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:05,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:00:05,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:05,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:00:05,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:00:05,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-11-21 17:00:05,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 562 transitions, 1133 flow. Second operand has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:05,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:05,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-11-21 17:00:05,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:06,335 INFO L130 PetriNetUnfolder]: 41/1004 cut-off events. [2022-11-21 17:00:06,335 INFO L131 PetriNetUnfolder]: For 10/12 co-relation queries the response was YES. [2022-11-21 17:00:06,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 1004 events. 41/1004 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5137 event pairs, 0 based on Foata normal form. 52/872 useless extension candidates. Maximal degree in co-relation 590. Up to 16 conditions per place. [2022-11-21 17:00:06,370 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 22 selfloop transitions, 4 changer transitions 3/551 dead transitions. [2022-11-21 17:00:06,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 551 transitions, 1172 flow [2022-11-21 17:00:06,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:00:06,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:00:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2785 transitions. [2022-11-21 17:00:06,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9554030874785592 [2022-11-21 17:00:06,401 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2785 transitions. [2022-11-21 17:00:06,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2785 transitions. [2022-11-21 17:00:06,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:06,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2785 transitions. [2022-11-21 17:00:06,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 557.0) internal successors, (2785), 5 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:06,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:06,437 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:06,439 INFO L175 Difference]: Start difference. First operand has 526 places, 562 transitions, 1133 flow. Second operand 5 states and 2785 transitions. [2022-11-21 17:00:06,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 551 transitions, 1172 flow [2022-11-21 17:00:06,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 551 transitions, 1162 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:00:06,464 INFO L231 Difference]: Finished difference. Result has 530 places, 540 transitions, 1108 flow [2022-11-21 17:00:06,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1108, PETRI_PLACES=530, PETRI_TRANSITIONS=540} [2022-11-21 17:00:06,473 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 4 predicate places. [2022-11-21 17:00:06,474 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 540 transitions, 1108 flow [2022-11-21 17:00:06,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 544.5) internal successors, (2178), 4 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:06,476 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:06,477 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:06,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:00:06,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-21 17:00:06,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2120409065, now seen corresponding path program 1 times [2022-11-21 17:00:06,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:06,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184354050] [2022-11-21 17:00:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:06,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:06,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:06,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184354050] [2022-11-21 17:00:06,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184354050] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:00:06,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270130552] [2022-11-21 17:00:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:06,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:00:06,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:00:06,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:00:06,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:00:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:06,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:00:06,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:00:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:07,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:00:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:07,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270130552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:00:07,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:00:07,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 17:00:07,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113676370] [2022-11-21 17:00:07,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:00:07,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:00:07,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:07,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:00:07,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:00:07,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-11-21 17:00:07,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 540 transitions, 1108 flow. Second operand has 12 states, 12 states have (on average 545.6666666666666) internal successors, (6548), 12 states have internal predecessors, (6548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:07,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:07,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-11-21 17:00:07,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:08,342 INFO L130 PetriNetUnfolder]: 101/2391 cut-off events. [2022-11-21 17:00:08,342 INFO L131 PetriNetUnfolder]: For 16/21 co-relation queries the response was YES. [2022-11-21 17:00:08,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 2391 events. 101/2391 cut-off events. For 16/21 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 17697 event pairs, 0 based on Foata normal form. 3/1949 useless extension candidates. Maximal degree in co-relation 1932. Up to 11 conditions per place. [2022-11-21 17:00:08,422 INFO L137 encePairwiseOnDemand]: 576/583 looper letters, 43 selfloop transitions, 18 changer transitions 0/583 dead transitions. [2022-11-21 17:00:08,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 583 transitions, 1354 flow [2022-11-21 17:00:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:00:08,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 17:00:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 9838 transitions. [2022-11-21 17:00:08,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9374880884314847 [2022-11-21 17:00:08,440 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 9838 transitions. [2022-11-21 17:00:08,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 9838 transitions. [2022-11-21 17:00:08,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:08,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 9838 transitions. [2022-11-21 17:00:08,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 546.5555555555555) internal successors, (9838), 18 states have internal predecessors, (9838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:08,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 583.0) internal successors, (11077), 19 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:08,496 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 583.0) internal successors, (11077), 19 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:08,496 INFO L175 Difference]: Start difference. First operand has 530 places, 540 transitions, 1108 flow. Second operand 18 states and 9838 transitions. [2022-11-21 17:00:08,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 583 transitions, 1354 flow [2022-11-21 17:00:08,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 583 transitions, 1352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:00:08,508 INFO L231 Difference]: Finished difference. Result has 547 places, 552 transitions, 1212 flow [2022-11-21 17:00:08,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1212, PETRI_PLACES=547, PETRI_TRANSITIONS=552} [2022-11-21 17:00:08,510 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 21 predicate places. [2022-11-21 17:00:08,510 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 552 transitions, 1212 flow [2022-11-21 17:00:08,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 545.6666666666666) internal successors, (6548), 12 states have internal predecessors, (6548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:08,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:08,514 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:08,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 17:00:08,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:00:08,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-21 17:00:08,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:08,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1308172820, now seen corresponding path program 1 times [2022-11-21 17:00:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:08,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806339381] [2022-11-21 17:00:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:08,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:08,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806339381] [2022-11-21 17:00:08,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806339381] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:00:08,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119799416] [2022-11-21 17:00:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:08,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:00:08,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:00:08,946 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:00:08,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:00:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:09,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:00:09,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:00:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:09,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:00:09,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119799416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:09,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:00:09,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:00:09,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315391564] [2022-11-21 17:00:09,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:09,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:00:09,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:09,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:00:09,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:00:09,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 543 out of 583 [2022-11-21 17:00:09,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 552 transitions, 1212 flow. Second operand has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:09,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:09,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 543 of 583 [2022-11-21 17:00:09,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:10,114 INFO L130 PetriNetUnfolder]: 101/2387 cut-off events. [2022-11-21 17:00:10,115 INFO L131 PetriNetUnfolder]: For 52/57 co-relation queries the response was YES. [2022-11-21 17:00:10,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 2387 events. 101/2387 cut-off events. For 52/57 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 17688 event pairs, 0 based on Foata normal form. 4/1946 useless extension candidates. Maximal degree in co-relation 2000. Up to 28 conditions per place. [2022-11-21 17:00:10,199 INFO L137 encePairwiseOnDemand]: 578/583 looper letters, 23 selfloop transitions, 11 changer transitions 0/556 dead transitions. [2022-11-21 17:00:10,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 556 transitions, 1275 flow [2022-11-21 17:00:10,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:00:10,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:00:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3827 transitions. [2022-11-21 17:00:10,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9377603528546925 [2022-11-21 17:00:10,269 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3827 transitions. [2022-11-21 17:00:10,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3827 transitions. [2022-11-21 17:00:10,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:10,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3827 transitions. [2022-11-21 17:00:10,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 546.7142857142857) internal successors, (3827), 7 states have internal predecessors, (3827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:10,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:10,298 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 583.0) internal successors, (4664), 8 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:10,298 INFO L175 Difference]: Start difference. First operand has 547 places, 552 transitions, 1212 flow. Second operand 7 states and 3827 transitions. [2022-11-21 17:00:10,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 556 transitions, 1275 flow [2022-11-21 17:00:10,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 556 transitions, 1243 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-21 17:00:10,310 INFO L231 Difference]: Finished difference. Result has 543 places, 548 transitions, 1175 flow [2022-11-21 17:00:10,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1175, PETRI_PLACES=543, PETRI_TRANSITIONS=548} [2022-11-21 17:00:10,312 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 17 predicate places. [2022-11-21 17:00:10,312 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 548 transitions, 1175 flow [2022-11-21 17:00:10,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:10,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:10,314 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:10,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:00:10,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4366dbb1-7667-4418-91cd-2a0e271d89f9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:00:10,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-21 17:00:10,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash 955751352, now seen corresponding path program 1 times [2022-11-21 17:00:10,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:10,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703719875] [2022-11-21 17:00:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:10,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:10,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:10,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703719875] [2022-11-21 17:00:10,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703719875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:10,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:10,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:00:10,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688921664] [2022-11-21 17:00:10,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:10,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:00:10,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:10,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:00:10,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:00:10,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 583 [2022-11-21 17:00:10,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 548 transitions, 1175 flow. Second operand has 6 states, 6 states have (on average 469.0) internal successors, (2814), 6 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:10,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:10,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 583 [2022-11-21 17:00:10,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:14,263 INFO L130 PetriNetUnfolder]: 1216/8132 cut-off events. [2022-11-21 17:00:14,263 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-21 17:00:14,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13156 conditions, 8132 events. 1216/8132 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 81154 event pairs, 140 based on Foata normal form. 0/6807 useless extension candidates. Maximal degree in co-relation 10521. Up to 966 conditions per place. [2022-11-21 17:00:14,467 INFO L137 encePairwiseOnDemand]: 559/583 looper letters, 195 selfloop transitions, 31 changer transitions 0/683 dead transitions. [2022-11-21 17:00:14,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 683 transitions, 1911 flow [2022-11-21 17:00:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:00:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 17:00:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4431 transitions. [2022-11-21 17:00:14,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8444825614636935 [2022-11-21 17:00:14,480 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4431 transitions. [2022-11-21 17:00:14,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4431 transitions. [2022-11-21 17:00:14,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:14,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4431 transitions. [2022-11-21 17:00:14,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 492.3333333333333) internal successors, (4431), 9 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:14,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:14,507 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:14,507 INFO L175 Difference]: Start difference. First operand has 543 places, 548 transitions, 1175 flow. Second operand 9 states and 4431 transitions. [2022-11-21 17:00:14,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 683 transitions, 1911 flow [2022-11-21 17:00:14,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 683 transitions, 1897 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 17:00:14,527 INFO L231 Difference]: Finished difference. Result has 553 places, 572 transitions, 1375 flow [2022-11-21 17:00:14,528 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1375, PETRI_PLACES=553, PETRI_TRANSITIONS=572} [2022-11-21 17:00:14,530 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 27 predicate places. [2022-11-21 17:00:14,530 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 572 transitions, 1375 flow [2022-11-21 17:00:14,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 469.0) internal successors, (2814), 6 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:14,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:14,531 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:14,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:00:14,532 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-21 17:00:14,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:14,532 INFO L85 PathProgramCache]: Analyzing trace with hash -436477753, now seen corresponding path program 1 times [2022-11-21 17:00:14,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:14,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964264875] [2022-11-21 17:00:14,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:14,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:14,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:14,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964264875] [2022-11-21 17:00:14,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964264875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:14,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:14,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:00:14,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910588401] [2022-11-21 17:00:14,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:14,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:00:14,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:14,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:00:14,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:00:14,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 463 out of 583 [2022-11-21 17:00:14,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 572 transitions, 1375 flow. Second operand has 4 states, 4 states have (on average 464.75) internal successors, (1859), 4 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:14,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:14,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 463 of 583 [2022-11-21 17:00:14,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:19,103 INFO L130 PetriNetUnfolder]: 1701/11567 cut-off events. [2022-11-21 17:00:19,104 INFO L131 PetriNetUnfolder]: For 1339/1339 co-relation queries the response was YES. [2022-11-21 17:00:19,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19655 conditions, 11567 events. 1701/11567 cut-off events. For 1339/1339 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 125370 event pairs, 660 based on Foata normal form. 160/10107 useless extension candidates. Maximal degree in co-relation 15716. Up to 2166 conditions per place. [2022-11-21 17:00:19,557 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 126 selfloop transitions, 22 changer transitions 0/609 dead transitions. [2022-11-21 17:00:19,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 609 transitions, 1742 flow [2022-11-21 17:00:19,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:00:19,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:00:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1994 transitions. [2022-11-21 17:00:19,564 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8550600343053173 [2022-11-21 17:00:19,565 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1994 transitions. [2022-11-21 17:00:19,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1994 transitions. [2022-11-21 17:00:19,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:19,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1994 transitions. [2022-11-21 17:00:19,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 498.5) internal successors, (1994), 4 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,575 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,575 INFO L175 Difference]: Start difference. First operand has 553 places, 572 transitions, 1375 flow. Second operand 4 states and 1994 transitions. [2022-11-21 17:00:19,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 609 transitions, 1742 flow [2022-11-21 17:00:19,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 609 transitions, 1740 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:00:19,601 INFO L231 Difference]: Finished difference. Result has 554 places, 578 transitions, 1509 flow [2022-11-21 17:00:19,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1509, PETRI_PLACES=554, PETRI_TRANSITIONS=578} [2022-11-21 17:00:19,604 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 28 predicate places. [2022-11-21 17:00:19,605 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 578 transitions, 1509 flow [2022-11-21 17:00:19,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 464.75) internal successors, (1859), 4 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:19,606 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:19,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:00:19,606 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-21 17:00:19,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:19,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1577499575, now seen corresponding path program 1 times [2022-11-21 17:00:19,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:19,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128039269] [2022-11-21 17:00:19,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:19,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:19,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:19,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128039269] [2022-11-21 17:00:19,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128039269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:19,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:19,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:00:19,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933347936] [2022-11-21 17:00:19,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:19,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:00:19,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:00:19,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:00:19,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 583 [2022-11-21 17:00:19,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 578 transitions, 1509 flow. Second operand has 9 states, 9 states have (on average 514.7777777777778) internal successors, (4633), 9 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:19,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:19,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 583 [2022-11-21 17:00:19,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:28,743 INFO L130 PetriNetUnfolder]: 2588/46589 cut-off events. [2022-11-21 17:00:28,743 INFO L131 PetriNetUnfolder]: For 1081/1101 co-relation queries the response was YES. [2022-11-21 17:00:29,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49880 conditions, 46589 events. 2588/46589 cut-off events. For 1081/1101 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 666319 event pairs, 443 based on Foata normal form. 0/37201 useless extension candidates. Maximal degree in co-relation 48628. Up to 987 conditions per place. [2022-11-21 17:00:29,469 INFO L137 encePairwiseOnDemand]: 571/583 looper letters, 51 selfloop transitions, 11 changer transitions 0/594 dead transitions. [2022-11-21 17:00:29,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 594 transitions, 1671 flow [2022-11-21 17:00:29,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:00:29,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 17:00:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5689 transitions. [2022-11-21 17:00:29,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8871043193513176 [2022-11-21 17:00:29,492 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5689 transitions. [2022-11-21 17:00:29,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5689 transitions. [2022-11-21 17:00:29,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:29,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5689 transitions. [2022-11-21 17:00:29,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 517.1818181818181) internal successors, (5689), 11 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:29,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 583.0) internal successors, (6996), 12 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:29,523 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 583.0) internal successors, (6996), 12 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:29,524 INFO L175 Difference]: Start difference. First operand has 554 places, 578 transitions, 1509 flow. Second operand 11 states and 5689 transitions. [2022-11-21 17:00:29,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 594 transitions, 1671 flow [2022-11-21 17:00:29,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 594 transitions, 1671 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:00:29,547 INFO L231 Difference]: Finished difference. Result has 570 places, 583 transitions, 1567 flow [2022-11-21 17:00:29,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1567, PETRI_PLACES=570, PETRI_TRANSITIONS=583} [2022-11-21 17:00:29,553 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 44 predicate places. [2022-11-21 17:00:29,553 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 583 transitions, 1567 flow [2022-11-21 17:00:29,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 514.7777777777778) internal successors, (4633), 9 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:29,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:29,556 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:29,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:00:29,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-21 17:00:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:29,558 INFO L85 PathProgramCache]: Analyzing trace with hash -994600474, now seen corresponding path program 1 times [2022-11-21 17:00:29,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:29,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97347847] [2022-11-21 17:00:29,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:29,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:29,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:29,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97347847] [2022-11-21 17:00:29,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97347847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:29,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:29,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:00:29,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967081902] [2022-11-21 17:00:29,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:29,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:00:29,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:29,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:00:29,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:00:29,685 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 583 [2022-11-21 17:00:29,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 583 transitions, 1567 flow. Second operand has 6 states, 6 states have (on average 469.1666666666667) internal successors, (2815), 6 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:29,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:29,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 583 [2022-11-21 17:00:29,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:39,725 INFO L130 PetriNetUnfolder]: 4883/23819 cut-off events. [2022-11-21 17:00:39,725 INFO L131 PetriNetUnfolder]: For 4764/4786 co-relation queries the response was YES. [2022-11-21 17:00:40,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34762 conditions, 23819 events. 4883/23819 cut-off events. For 4764/4786 co-relation queries the response was YES. Maximal size of possible extension queue 2497. Compared 354139 event pairs, 616 based on Foata normal form. 0/17065 useless extension candidates. Maximal degree in co-relation 31352. Up to 4180 conditions per place. [2022-11-21 17:00:40,348 INFO L137 encePairwiseOnDemand]: 559/583 looper letters, 194 selfloop transitions, 31 changer transitions 0/716 dead transitions. [2022-11-21 17:00:40,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 716 transitions, 2289 flow [2022-11-21 17:00:40,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:00:40,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 17:00:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4429 transitions. [2022-11-21 17:00:40,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8441013912712025 [2022-11-21 17:00:40,358 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4429 transitions. [2022-11-21 17:00:40,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4429 transitions. [2022-11-21 17:00:40,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:40,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4429 transitions. [2022-11-21 17:00:40,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 492.1111111111111) internal successors, (4429), 9 states have internal predecessors, (4429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:40,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:40,383 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 583.0) internal successors, (5830), 10 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:40,384 INFO L175 Difference]: Start difference. First operand has 570 places, 583 transitions, 1567 flow. Second operand 9 states and 4429 transitions. [2022-11-21 17:00:40,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 716 transitions, 2289 flow [2022-11-21 17:00:40,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 716 transitions, 2282 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:00:40,402 INFO L231 Difference]: Finished difference. Result has 582 places, 607 transitions, 1774 flow [2022-11-21 17:00:40,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1774, PETRI_PLACES=582, PETRI_TRANSITIONS=607} [2022-11-21 17:00:40,404 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 56 predicate places. [2022-11-21 17:00:40,404 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 607 transitions, 1774 flow [2022-11-21 17:00:40,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 469.1666666666667) internal successors, (2815), 6 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:40,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:40,406 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:40,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:00:40,410 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-21 17:00:40,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:40,411 INFO L85 PathProgramCache]: Analyzing trace with hash -767841993, now seen corresponding path program 1 times [2022-11-21 17:00:40,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:40,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076974408] [2022-11-21 17:00:40,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:40,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:40,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:40,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076974408] [2022-11-21 17:00:40,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076974408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:40,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:40,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:00:40,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053937410] [2022-11-21 17:00:40,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:40,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:00:40,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:00:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:00:40,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 463 out of 583 [2022-11-21 17:00:40,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 607 transitions, 1774 flow. Second operand has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:40,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:40,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 463 of 583 [2022-11-21 17:00:40,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:00:54,374 INFO L130 PetriNetUnfolder]: 6847/33721 cut-off events. [2022-11-21 17:00:54,374 INFO L131 PetriNetUnfolder]: For 9941/9963 co-relation queries the response was YES. [2022-11-21 17:00:55,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51474 conditions, 33721 events. 6847/33721 cut-off events. For 9941/9963 co-relation queries the response was YES. Maximal size of possible extension queue 3520. Compared 524528 event pairs, 572 based on Foata normal form. 432/25152 useless extension candidates. Maximal degree in co-relation 46272. Up to 6933 conditions per place. [2022-11-21 17:00:55,302 INFO L137 encePairwiseOnDemand]: 555/583 looper letters, 125 selfloop transitions, 22 changer transitions 0/643 dead transitions. [2022-11-21 17:00:55,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 643 transitions, 2134 flow [2022-11-21 17:00:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:00:55,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 17:00:55,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1993 transitions. [2022-11-21 17:00:55,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8546312178387651 [2022-11-21 17:00:55,308 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1993 transitions. [2022-11-21 17:00:55,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1993 transitions. [2022-11-21 17:00:55,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:00:55,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1993 transitions. [2022-11-21 17:00:55,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 498.25) internal successors, (1993), 4 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:55,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:55,320 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:55,320 INFO L175 Difference]: Start difference. First operand has 582 places, 607 transitions, 1774 flow. Second operand 4 states and 1993 transitions. [2022-11-21 17:00:55,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 643 transitions, 2134 flow [2022-11-21 17:00:55,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 643 transitions, 2132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:00:55,373 INFO L231 Difference]: Finished difference. Result has 583 places, 613 transitions, 1908 flow [2022-11-21 17:00:55,374 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1908, PETRI_PLACES=583, PETRI_TRANSITIONS=613} [2022-11-21 17:00:55,375 INFO L288 CegarLoopForPetriNet]: 526 programPoint places, 57 predicate places. [2022-11-21 17:00:55,375 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 613 transitions, 1908 flow [2022-11-21 17:00:55,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:55,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:00:55,376 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:55,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:00:55,376 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-11-21 17:00:55,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:55,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1908863815, now seen corresponding path program 1 times [2022-11-21 17:00:55,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:55,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568708265] [2022-11-21 17:00:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:55,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:55,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:00:55,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568708265] [2022-11-21 17:00:55,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568708265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:55,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:55,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:00:55,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267328481] [2022-11-21 17:00:55,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:55,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:00:55,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:00:55,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:00:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:00:55,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 512 out of 583 [2022-11-21 17:00:55,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 613 transitions, 1908 flow. Second operand has 9 states, 9 states have (on average 514.8888888888889) internal successors, (4634), 9 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:55,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:00:55,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 512 of 583 [2022-11-21 17:00:55,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand