./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro --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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- 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-8393723 [2022-11-18 21:08:45,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:08:45,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:08:45,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:08:45,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:08:45,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:08:45,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:08:45,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:08:45,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:08:45,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:08:45,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:08:45,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:08:45,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:08:45,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:08:45,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:08:45,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:08:45,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:08:45,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:08:45,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:08:45,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:08:45,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:08:45,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:08:45,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:08:45,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:08:45,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:08:45,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:08:45,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:08:45,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:08:45,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:08:45,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:08:45,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:08:45,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:08:45,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:08:45,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:08:45,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:08:45,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:08:45,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:08:45,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:08:45,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:08:45,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:08:45,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:08:45,891 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:08:45,914 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:08:45,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:08:45,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:08:45,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:08:45,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:08:45,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:08:45,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:08:45,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:08:45,918 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:08:45,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:08:45,918 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:08:45,919 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:08:45,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:08:45,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:08:45,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:08:45,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:08:45,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:08:45,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:08:45,920 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:08:45,921 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:08:45,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:08:45,921 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:08:45,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:08:45,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:08:45,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:08:45,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:08:45,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:08:45,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:08:45,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:08:45,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:08:45,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:08:45,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:08:45,924 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:08:45,924 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:08:45,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:08:45,925 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_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2022-11-18 21:08:46,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:08:46,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:08:46,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:08:46,256 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:08:46,257 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:08:46,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-18 21:08:46,329 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/data/5ed2d7399/32f7d240ad23424f93ed6b2fe8069154/FLAG5e1a12f44 [2022-11-18 21:08:46,868 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:08:46,869 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-18 21:08:46,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/data/5ed2d7399/32f7d240ad23424f93ed6b2fe8069154/FLAG5e1a12f44 [2022-11-18 21:08:47,227 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/data/5ed2d7399/32f7d240ad23424f93ed6b2fe8069154 [2022-11-18 21:08:47,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:08:47,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:08:47,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:08:47,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:08:47,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:08:47,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd378b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47, skipping insertion in model container [2022-11-18 21:08:47,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:08:47,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:08:47,550 WARN L234 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_bb4c4df4-8d9f-459b-967a-81aa76eea64a/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-18 21:08:47,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:08:47,564 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:08:47,600 WARN L234 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_bb4c4df4-8d9f-459b-967a-81aa76eea64a/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-18 21:08:47,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:08:47,619 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:08:47,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47 WrapperNode [2022-11-18 21:08:47,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:08:47,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:08:47,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:08:47,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:08:47,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,701 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 492 [2022-11-18 21:08:47,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:08:47,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:08:47,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:08:47,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:08:47,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,741 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:08:47,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:08:47,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:08:47,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:08:47,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (1/1) ... [2022-11-18 21:08:47,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:08:47,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:47,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:08:47,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:08:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:08:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:08:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:08:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:08:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:08:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:08:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:08:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:08:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 21:08:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 21:08:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 21:08:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 21:08:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:08:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 21:08:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 21:08:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:08:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:08:47,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:08:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:08:47,865 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:08:48,049 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:08:48,064 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:08:48,825 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:08:49,238 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:08:49,239 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-18 21:08:49,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:08:49 BoogieIcfgContainer [2022-11-18 21:08:49,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:08:49,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:08:49,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:08:49,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:08:49,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:08:47" (1/3) ... [2022-11-18 21:08:49,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a510fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:08:49, skipping insertion in model container [2022-11-18 21:08:49,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:08:47" (2/3) ... [2022-11-18 21:08:49,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a510fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:08:49, skipping insertion in model container [2022-11-18 21:08:49,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:08:49" (3/3) ... [2022-11-18 21:08:49,256 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-11-18 21:08:49,265 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:08:49,276 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:08:49,277 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-18 21:08:49,277 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:08:49,458 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 21:08:49,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 371 places, 395 transitions, 822 flow [2022-11-18 21:08:49,788 INFO L130 PetriNetUnfolder]: 37/391 cut-off events. [2022-11-18 21:08:49,788 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 21:08:49,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 391 events. 37/391 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 401 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 344. Up to 8 conditions per place. [2022-11-18 21:08:49,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 371 places, 395 transitions, 822 flow [2022-11-18 21:08:49,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 368 transitions, 757 flow [2022-11-18 21:08:49,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:08:49,836 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;@1a81662c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:08:49,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-18 21:08:49,859 INFO L130 PetriNetUnfolder]: 3/83 cut-off events. [2022-11-18 21:08:49,860 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:08:49,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:49,861 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] [2022-11-18 21:08:49,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 21:08:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:49,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1508134753, now seen corresponding path program 1 times [2022-11-18 21:08:49,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:49,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43383978] [2022-11-18 21:08:49,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:49,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:50,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:50,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43383978] [2022-11-18 21:08:50,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43383978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:50,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:08:50,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:08:50,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389657588] [2022-11-18 21:08:50,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:50,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:08:50,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:50,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:08:50,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:08:50,446 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-11-18 21:08:50,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 368 transitions, 757 flow. Second operand has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:50,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:50,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-11-18 21:08:50,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:52,306 INFO L130 PetriNetUnfolder]: 2793/4191 cut-off events. [2022-11-18 21:08:52,307 INFO L131 PetriNetUnfolder]: For 418/418 co-relation queries the response was YES. [2022-11-18 21:08:52,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8124 conditions, 4191 events. 2793/4191 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18277 event pairs, 1192 based on Foata normal form. 632/3059 useless extension candidates. Maximal degree in co-relation 3423. Up to 1751 conditions per place. [2022-11-18 21:08:52,426 INFO L137 encePairwiseOnDemand]: 340/395 looper letters, 126 selfloop transitions, 19 changer transitions 8/406 dead transitions. [2022-11-18 21:08:52,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 406 transitions, 1144 flow [2022-11-18 21:08:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:08:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:08:52,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1626 transitions. [2022-11-18 21:08:52,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8232911392405063 [2022-11-18 21:08:52,448 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1626 transitions. [2022-11-18 21:08:52,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1626 transitions. [2022-11-18 21:08:52,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:52,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1626 transitions. [2022-11-18 21:08:52,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.2) internal successors, (1626), 5 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:52,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:52,481 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:52,483 INFO L175 Difference]: Start difference. First operand has 345 places, 368 transitions, 757 flow. Second operand 5 states and 1626 transitions. [2022-11-18 21:08:52,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 406 transitions, 1144 flow [2022-11-18 21:08:52,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 406 transitions, 1118 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 21:08:52,506 INFO L231 Difference]: Finished difference. Result has 333 places, 347 transitions, 813 flow [2022-11-18 21:08:52,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=813, PETRI_PLACES=333, PETRI_TRANSITIONS=347} [2022-11-18 21:08:52,514 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, -12 predicate places. [2022-11-18 21:08:52,514 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 347 transitions, 813 flow [2022-11-18 21:08:52,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:52,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:52,517 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] [2022-11-18 21:08:52,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:08:52,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 21:08:52,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:52,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1522823677, now seen corresponding path program 1 times [2022-11-18 21:08:52,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:52,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542443873] [2022-11-18 21:08:52,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:52,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:52,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:52,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542443873] [2022-11-18 21:08:52,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542443873] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:52,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968350105] [2022-11-18 21:08:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:52,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:52,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:52,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:52,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:08:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:52,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:08:52,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:53,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:08:53,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:53,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968350105] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:08:53,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:08:53,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 21:08:53,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599656455] [2022-11-18 21:08:53,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:08:53,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:08:53,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:53,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:08:53,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:08:53,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-11-18 21:08:53,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 347 transitions, 813 flow. Second operand has 12 states, 12 states have (on average 287.6666666666667) internal successors, (3452), 12 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:53,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:53,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-11-18 21:08:53,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:08:56,897 INFO L130 PetriNetUnfolder]: 6981/10275 cut-off events. [2022-11-18 21:08:56,897 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2022-11-18 21:08:56,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19857 conditions, 10275 events. 6981/10275 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 51122 event pairs, 2980 based on Foata normal form. 12/5917 useless extension candidates. Maximal degree in co-relation 15272. Up to 1740 conditions per place. [2022-11-18 21:08:57,048 INFO L137 encePairwiseOnDemand]: 364/395 looper letters, 267 selfloop transitions, 84 changer transitions 0/604 dead transitions. [2022-11-18 21:08:57,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 604 transitions, 2167 flow [2022-11-18 21:08:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:08:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 21:08:57,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5493 transitions. [2022-11-18 21:08:57,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7725738396624473 [2022-11-18 21:08:57,060 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5493 transitions. [2022-11-18 21:08:57,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5493 transitions. [2022-11-18 21:08:57,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:08:57,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5493 transitions. [2022-11-18 21:08:57,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 305.1666666666667) internal successors, (5493), 18 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:57,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 395.0) internal successors, (7505), 19 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:57,094 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 395.0) internal successors, (7505), 19 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:57,095 INFO L175 Difference]: Start difference. First operand has 333 places, 347 transitions, 813 flow. Second operand 18 states and 5493 transitions. [2022-11-18 21:08:57,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 604 transitions, 2167 flow [2022-11-18 21:08:57,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 604 transitions, 2156 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:08:57,107 INFO L231 Difference]: Finished difference. Result has 345 places, 404 transitions, 1304 flow [2022-11-18 21:08:57,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1304, PETRI_PLACES=345, PETRI_TRANSITIONS=404} [2022-11-18 21:08:57,109 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 0 predicate places. [2022-11-18 21:08:57,109 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 404 transitions, 1304 flow [2022-11-18 21:08:57,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 287.6666666666667) internal successors, (3452), 12 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:57,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:08:57,112 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] [2022-11-18 21:08:57,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:57,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:57,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 21:08:57,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:57,321 INFO L85 PathProgramCache]: Analyzing trace with hash 37107475, now seen corresponding path program 1 times [2022-11-18 21:08:57,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:57,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881593918] [2022-11-18 21:08:57,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:57,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:57,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:57,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881593918] [2022-11-18 21:08:57,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881593918] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:57,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726469076] [2022-11-18 21:08:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:57,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:57,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:57,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:57,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:08:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:57,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:08:57,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:08:57,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:08:57,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726469076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:57,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:08:57,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:08:57,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309540348] [2022-11-18 21:08:57,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:57,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:08:57,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:57,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:08:57,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:08:57,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-11-18 21:08:57,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 404 transitions, 1304 flow. Second operand has 6 states, 6 states have (on average 287.3333333333333) internal successors, (1724), 6 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:08:57,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:08:57,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-11-18 21:08:57,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:00,963 INFO L130 PetriNetUnfolder]: 6981/10259 cut-off events. [2022-11-18 21:09:00,963 INFO L131 PetriNetUnfolder]: For 464/464 co-relation queries the response was YES. [2022-11-18 21:09:01,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19932 conditions, 10259 events. 6981/10259 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 50977 event pairs, 2980 based on Foata normal form. 16/5905 useless extension candidates. Maximal degree in co-relation 15888. Up to 6860 conditions per place. [2022-11-18 21:09:01,245 INFO L137 encePairwiseOnDemand]: 372/395 looper letters, 127 selfloop transitions, 59 changer transitions 0/439 dead transitions. [2022-11-18 21:09:01,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 439 transitions, 1686 flow [2022-11-18 21:09:01,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:09:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:09:01,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2140 transitions. [2022-11-18 21:09:01,260 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7739602169981917 [2022-11-18 21:09:01,260 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2140 transitions. [2022-11-18 21:09:01,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2140 transitions. [2022-11-18 21:09:01,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:01,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2140 transitions. [2022-11-18 21:09:01,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 305.7142857142857) internal successors, (2140), 7 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:01,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:01,280 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:01,281 INFO L175 Difference]: Start difference. First operand has 345 places, 404 transitions, 1304 flow. Second operand 7 states and 2140 transitions. [2022-11-18 21:09:01,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 439 transitions, 1686 flow [2022-11-18 21:09:01,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 439 transitions, 1528 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-11-18 21:09:01,300 INFO L231 Difference]: Finished difference. Result has 338 places, 388 transitions, 1156 flow [2022-11-18 21:09:01,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1156, PETRI_PLACES=338, PETRI_TRANSITIONS=388} [2022-11-18 21:09:01,303 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, -7 predicate places. [2022-11-18 21:09:01,304 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 388 transitions, 1156 flow [2022-11-18 21:09:01,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 287.3333333333333) internal successors, (1724), 6 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:01,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:01,305 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:01,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 21:09:01,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:01,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 21:09:01,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash 319941601, now seen corresponding path program 2 times [2022-11-18 21:09:01,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:01,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646797411] [2022-11-18 21:09:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:01,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:01,835 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:01,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:01,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646797411] [2022-11-18 21:09:01,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646797411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:01,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680292694] [2022-11-18 21:09:01,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:09:01,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:01,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:01,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:01,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:09:01,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:09:01,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:09:01,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:09:01,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 21:09:02,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 21:09:02,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680292694] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:02,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:02,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 21:09:02,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496479757] [2022-11-18 21:09:02,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:02,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:09:02,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:02,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:09:02,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:09:02,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 395 [2022-11-18 21:09:02,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 388 transitions, 1156 flow. Second operand has 18 states, 18 states have (on average 263.6111111111111) internal successors, (4745), 18 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:02,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:02,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 395 [2022-11-18 21:09:02,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:05,176 INFO L130 PetriNetUnfolder]: 2584/4759 cut-off events. [2022-11-18 21:09:05,176 INFO L131 PetriNetUnfolder]: For 420/420 co-relation queries the response was YES. [2022-11-18 21:09:05,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8653 conditions, 4759 events. 2584/4759 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 21376 event pairs, 693 based on Foata normal form. 8/3535 useless extension candidates. Maximal degree in co-relation 6474. Up to 644 conditions per place. [2022-11-18 21:09:05,232 INFO L137 encePairwiseOnDemand]: 353/395 looper letters, 333 selfloop transitions, 129 changer transitions 0/690 dead transitions. [2022-11-18 21:09:05,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 690 transitions, 2875 flow [2022-11-18 21:09:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 21:09:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 21:09:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 13252 transitions. [2022-11-18 21:09:05,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6846809609919917 [2022-11-18 21:09:05,268 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 13252 transitions. [2022-11-18 21:09:05,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 13252 transitions. [2022-11-18 21:09:05,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:05,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 13252 transitions. [2022-11-18 21:09:05,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 270.44897959183675) internal successors, (13252), 49 states have internal predecessors, (13252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:05,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 395.0) internal successors, (19750), 50 states have internal predecessors, (19750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:05,358 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 395.0) internal successors, (19750), 50 states have internal predecessors, (19750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:05,358 INFO L175 Difference]: Start difference. First operand has 338 places, 388 transitions, 1156 flow. Second operand 49 states and 13252 transitions. [2022-11-18 21:09:05,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 690 transitions, 2875 flow [2022-11-18 21:09:05,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 690 transitions, 2780 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:09:05,375 INFO L231 Difference]: Finished difference. Result has 378 places, 437 transitions, 1615 flow [2022-11-18 21:09:05,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1615, PETRI_PLACES=378, PETRI_TRANSITIONS=437} [2022-11-18 21:09:05,376 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 33 predicate places. [2022-11-18 21:09:05,376 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 437 transitions, 1615 flow [2022-11-18 21:09:05,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 263.6111111111111) internal successors, (4745), 18 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:05,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:05,379 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:05,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:05,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:05,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 21:09:05,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:05,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1450344230, now seen corresponding path program 1 times [2022-11-18 21:09:05,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:05,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309664734] [2022-11-18 21:09:05,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:05,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:06,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:06,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309664734] [2022-11-18 21:09:06,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309664734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:06,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179903779] [2022-11-18 21:09:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:06,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:06,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:06,117 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:06,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:09:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:06,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:09:06,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:06,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:06,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179903779] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:06,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:06,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 21:09:06,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974243798] [2022-11-18 21:09:06,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:06,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 21:09:06,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:06,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 21:09:06,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 21:09:06,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-11-18 21:09:06,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 437 transitions, 1615 flow. Second operand has 32 states, 32 states have (on average 288.28125) internal successors, (9225), 32 states have internal predecessors, (9225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:06,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:06,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-11-18 21:09:06,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:11,656 INFO L130 PetriNetUnfolder]: 5536/10078 cut-off events. [2022-11-18 21:09:11,656 INFO L131 PetriNetUnfolder]: For 1581/1581 co-relation queries the response was YES. [2022-11-18 21:09:11,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18607 conditions, 10078 events. 5536/10078 cut-off events. For 1581/1581 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 51436 event pairs, 1485 based on Foata normal form. 24/7522 useless extension candidates. Maximal degree in co-relation 17803. Up to 1380 conditions per place. [2022-11-18 21:09:11,771 INFO L137 encePairwiseOnDemand]: 369/395 looper letters, 686 selfloop transitions, 218 changer transitions 0/1163 dead transitions. [2022-11-18 21:09:11,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1163 transitions, 5931 flow [2022-11-18 21:09:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 21:09:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 21:09:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 13468 transitions. [2022-11-18 21:09:11,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7749136939010357 [2022-11-18 21:09:11,793 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 13468 transitions. [2022-11-18 21:09:11,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 13468 transitions. [2022-11-18 21:09:11,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:11,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 13468 transitions. [2022-11-18 21:09:11,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 306.09090909090907) internal successors, (13468), 44 states have internal predecessors, (13468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:11,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 395.0) internal successors, (17775), 45 states have internal predecessors, (17775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:11,854 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 395.0) internal successors, (17775), 45 states have internal predecessors, (17775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:11,854 INFO L175 Difference]: Start difference. First operand has 378 places, 437 transitions, 1615 flow. Second operand 44 states and 13468 transitions. [2022-11-18 21:09:11,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1163 transitions, 5931 flow [2022-11-18 21:09:11,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 1163 transitions, 5589 flow, removed 104 selfloop flow, removed 15 redundant places. [2022-11-18 21:09:11,878 INFO L231 Difference]: Finished difference. Result has 415 places, 563 transitions, 2827 flow [2022-11-18 21:09:11,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2827, PETRI_PLACES=415, PETRI_TRANSITIONS=563} [2022-11-18 21:09:11,880 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 70 predicate places. [2022-11-18 21:09:11,880 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 563 transitions, 2827 flow [2022-11-18 21:09:11,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 288.28125) internal successors, (9225), 32 states have internal predecessors, (9225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:11,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:11,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:11,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:12,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4c4df4-8d9f-459b-967a-81aa76eea64a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:12,089 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 21:09:12,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:12,090 INFO L85 PathProgramCache]: Analyzing trace with hash 312017211, now seen corresponding path program 1 times [2022-11-18 21:09:12,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:12,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702561935] [2022-11-18 21:09:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:12,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:12,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:12,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702561935] [2022-11-18 21:09:12,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702561935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:12,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:12,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:09:12,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001245970] [2022-11-18 21:09:12,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:12,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:09:12,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:12,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:09:12,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:09:12,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 395 [2022-11-18 21:09:12,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 563 transitions, 2827 flow. Second operand has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:12,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:12,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 395 [2022-11-18 21:09:12,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:19,710 INFO L130 PetriNetUnfolder]: 16996/25273 cut-off events. [2022-11-18 21:09:19,710 INFO L131 PetriNetUnfolder]: For 1677/1692 co-relation queries the response was YES. [2022-11-18 21:09:19,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49764 conditions, 25273 events. 16996/25273 cut-off events. For 1677/1692 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 129018 event pairs, 5850 based on Foata normal form. 0/16708 useless extension candidates. Maximal degree in co-relation 49055. Up to 17431 conditions per place. [2022-11-18 21:09:20,185 INFO L137 encePairwiseOnDemand]: 390/395 looper letters, 50 selfloop transitions, 4 changer transitions 0/579 dead transitions. [2022-11-18 21:09:20,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 579 transitions, 2974 flow [2022-11-18 21:09:20,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:09:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:09:20,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1015 transitions. [2022-11-18 21:09:20,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8565400843881856 [2022-11-18 21:09:20,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1015 transitions. [2022-11-18 21:09:20,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1015 transitions. [2022-11-18 21:09:20,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:20,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1015 transitions. [2022-11-18 21:09:20,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:20,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:20,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:20,197 INFO L175 Difference]: Start difference. First operand has 415 places, 563 transitions, 2827 flow. Second operand 3 states and 1015 transitions. [2022-11-18 21:09:20,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 579 transitions, 2974 flow [2022-11-18 21:09:20,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 579 transitions, 2837 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-18 21:09:20,235 INFO L231 Difference]: Finished difference. Result has 404 places, 564 transitions, 2712 flow [2022-11-18 21:09:20,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2712, PETRI_PLACES=404, PETRI_TRANSITIONS=564} [2022-11-18 21:09:20,240 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 59 predicate places. [2022-11-18 21:09:20,240 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 564 transitions, 2712 flow [2022-11-18 21:09:20,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:20,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:20,241 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:20,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 21:09:20,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 21:09:20,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:20,243 INFO L85 PathProgramCache]: Analyzing trace with hash -84956492, now seen corresponding path program 1 times [2022-11-18 21:09:20,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:20,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941569450] [2022-11-18 21:09:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:20,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:20,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 21:09:20,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:20,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941569450] [2022-11-18 21:09:20,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941569450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:20,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:20,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:09:20,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017098247] [2022-11-18 21:09:20,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:20,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:09:20,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:20,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:09:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:09:20,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 395 [2022-11-18 21:09:20,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 564 transitions, 2712 flow. Second operand has 6 states, 6 states have (on average 289.1666666666667) internal successors, (1735), 6 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:20,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:20,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 395 [2022-11-18 21:09:20,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:26,911 INFO L130 PetriNetUnfolder]: 10336/20385 cut-off events. [2022-11-18 21:09:26,912 INFO L131 PetriNetUnfolder]: For 5653/5998 co-relation queries the response was YES. [2022-11-18 21:09:27,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38181 conditions, 20385 events. 10336/20385 cut-off events. For 5653/5998 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 136136 event pairs, 2805 based on Foata normal form. 660/15750 useless extension candidates. Maximal degree in co-relation 37375. Up to 8660 conditions per place. [2022-11-18 21:09:27,335 INFO L137 encePairwiseOnDemand]: 382/395 looper letters, 298 selfloop transitions, 24 changer transitions 0/632 dead transitions. [2022-11-18 21:09:27,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 632 transitions, 3676 flow [2022-11-18 21:09:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:09:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:09:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2664 transitions. [2022-11-18 21:09:27,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7493670886075949 [2022-11-18 21:09:27,340 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2664 transitions. [2022-11-18 21:09:27,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2664 transitions. [2022-11-18 21:09:27,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:27,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2664 transitions. [2022-11-18 21:09:27,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 296.0) internal successors, (2664), 9 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:27,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:27,355 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:27,355 INFO L175 Difference]: Start difference. First operand has 404 places, 564 transitions, 2712 flow. Second operand 9 states and 2664 transitions. [2022-11-18 21:09:27,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 632 transitions, 3676 flow [2022-11-18 21:09:27,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 632 transitions, 3664 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 21:09:27,400 INFO L231 Difference]: Finished difference. Result has 411 places, 565 transitions, 2765 flow [2022-11-18 21:09:27,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2765, PETRI_PLACES=411, PETRI_TRANSITIONS=565} [2022-11-18 21:09:27,402 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 66 predicate places. [2022-11-18 21:09:27,403 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 565 transitions, 2765 flow [2022-11-18 21:09:27,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 289.1666666666667) internal successors, (1735), 6 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:27,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:27,404 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:27,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:09:27,404 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 21:09:27,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:27,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1661318619, now seen corresponding path program 1 times [2022-11-18 21:09:27,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:27,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918554016] [2022-11-18 21:09:27,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:27,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:27,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:27,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:27,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918554016] [2022-11-18 21:09:27,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918554016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:27,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:27,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:09:27,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980734900] [2022-11-18 21:09:27,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:27,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:09:27,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:27,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:09:27,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:09:27,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 395 [2022-11-18 21:09:27,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 565 transitions, 2765 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:27,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:27,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 395 [2022-11-18 21:09:27,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:38,217 INFO L130 PetriNetUnfolder]: 22231/35460 cut-off events. [2022-11-18 21:09:38,217 INFO L131 PetriNetUnfolder]: For 5281/5311 co-relation queries the response was YES. [2022-11-18 21:09:38,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74114 conditions, 35460 events. 22231/35460 cut-off events. For 5281/5311 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 222389 event pairs, 5640 based on Foata normal form. 0/26535 useless extension candidates. Maximal degree in co-relation 73416. Up to 19952 conditions per place. [2022-11-18 21:09:38,660 INFO L137 encePairwiseOnDemand]: 390/395 looper letters, 53 selfloop transitions, 3 changer transitions 0/582 dead transitions. [2022-11-18 21:09:38,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 582 transitions, 2924 flow [2022-11-18 21:09:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:09:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:09:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1017 transitions. [2022-11-18 21:09:38,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8582278481012658 [2022-11-18 21:09:38,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1017 transitions. [2022-11-18 21:09:38,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1017 transitions. [2022-11-18 21:09:38,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:38,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1017 transitions. [2022-11-18 21:09:38,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:38,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:38,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:38,667 INFO L175 Difference]: Start difference. First operand has 411 places, 565 transitions, 2765 flow. Second operand 3 states and 1017 transitions. [2022-11-18 21:09:38,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 582 transitions, 2924 flow [2022-11-18 21:09:38,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 582 transitions, 2902 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:09:38,701 INFO L231 Difference]: Finished difference. Result has 412 places, 566 transitions, 2763 flow [2022-11-18 21:09:38,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2763, PETRI_PLACES=412, PETRI_TRANSITIONS=566} [2022-11-18 21:09:38,703 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 67 predicate places. [2022-11-18 21:09:38,703 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 566 transitions, 2763 flow [2022-11-18 21:09:38,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:38,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:38,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:38,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:09:38,704 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 21:09:38,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1403370878, now seen corresponding path program 1 times [2022-11-18 21:09:38,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:38,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496246072] [2022-11-18 21:09:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:38,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:39,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:39,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496246072] [2022-11-18 21:09:39,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496246072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:39,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:39,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:09:39,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425847143] [2022-11-18 21:09:39,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:39,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:09:39,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:39,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:09:39,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:09:39,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 395 [2022-11-18 21:09:39,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 566 transitions, 2763 flow. Second operand has 4 states, 4 states have (on average 328.75) internal successors, (1315), 4 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:39,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:39,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 395 [2022-11-18 21:09:39,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand