./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/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_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/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_8a8ae188-486a-4868-a554-83d482b91332/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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --- 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 20:53:14,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:53:14,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:53:14,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:53:14,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:53:14,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:53:14,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:53:14,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:53:14,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:53:14,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:53:14,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:53:14,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:53:14,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:53:14,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:53:14,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:53:14,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:53:14,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:53:14,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:53:14,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:53:14,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:53:14,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:53:14,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:53:14,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:53:14,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:53:14,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:53:14,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:53:14,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:53:14,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:53:14,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:53:14,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:53:14,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:53:14,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:53:14,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:53:14,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:53:14,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:53:14,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:53:14,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:53:14,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:53:14,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:53:14,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:53:14,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:53:14,319 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:53:14,343 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:53:14,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:53:14,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:53:14,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:53:14,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:53:14,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:53:14,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:53:14,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:53:14,346 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:53:14,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:53:14,347 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:53:14,347 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:53:14,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:53:14,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:53:14,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:53:14,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:53:14,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:53:14,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:53:14,349 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:53:14,349 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:53:14,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:53:14,349 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:53:14,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:53:14,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:53:14,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:53:14,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:53:14,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:53:14,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:53:14,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:53:14,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:53:14,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:53:14,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:53:14,352 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:53:14,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:53:14,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:53:14,352 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_8a8ae188-486a-4868-a554-83d482b91332/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f [2022-11-18 20:53:14,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:53:14,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:53:14,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:53:14,719 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:53:14,720 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:53:14,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-18 20:53:14,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/data/10fbcd074/0133dbf87de24ced8ae7434de4a07415/FLAG4bc4dec4e [2022-11-18 20:53:15,349 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:53:15,349 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-18 20:53:15,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/data/10fbcd074/0133dbf87de24ced8ae7434de4a07415/FLAG4bc4dec4e [2022-11-18 20:53:15,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/data/10fbcd074/0133dbf87de24ced8ae7434de4a07415 [2022-11-18 20:53:15,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:53:15,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:53:15,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:53:15,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:53:15,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:53:15,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:53:15" (1/1) ... [2022-11-18 20:53:15,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d52675a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:15, skipping insertion in model container [2022-11-18 20:53:15,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:53:15" (1/1) ... [2022-11-18 20:53:15,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:53:15,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:53:15,994 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_8a8ae188-486a-4868-a554-83d482b91332/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-18 20:53:16,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:53:16,011 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:53:16,037 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_8a8ae188-486a-4868-a554-83d482b91332/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-18 20:53:16,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:53:16,056 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:53:16,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:16 WrapperNode [2022-11-18 20:53:16,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:53:16,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:53:16,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:53:16,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:53:16,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:16" (1/1) ... [2022-11-18 20:53:16,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:16" (1/1) ... [2022-11-18 20:53:16,104 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 303 [2022-11-18 20:53:16,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:53:16,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:53:16,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:53:16,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:53:16,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:16" (1/1) ... [2022-11-18 20:53:16,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:16" (1/1) ... [2022-11-18 20:53:16,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:16" (1/1) ... [2022-11-18 20:53:16,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:16" (1/1) ... [2022-11-18 20:53:16,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:16" (1/1) ... [2022-11-18 20:53:16,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:16" (1/1) ... [2022-11-18 20:53:16,150 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:16" (1/1) ... [2022-11-18 20:53:16,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:16" (1/1) ... [2022-11-18 20:53:16,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:53:16,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:53:16,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:53:16,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:53:16,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:16" (1/1) ... [2022-11-18 20:53:16,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:53:16,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:16,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:53:16,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:53:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:53:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:53:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:53:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:53:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:53:16,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:53:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:53:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:53:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:53:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:53:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:53:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:53:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:53:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:53:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:53:16,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:53:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:53:16,272 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 20:53:16,450 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:53:16,452 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:53:16,969 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:53:17,831 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:53:17,831 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 20:53:17,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:53:17 BoogieIcfgContainer [2022-11-18 20:53:17,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:53:17,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:53:17,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:53:17,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:53:17,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:53:15" (1/3) ... [2022-11-18 20:53:17,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77452eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:53:17, skipping insertion in model container [2022-11-18 20:53:17,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:53:16" (2/3) ... [2022-11-18 20:53:17,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77452eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:53:17, skipping insertion in model container [2022-11-18 20:53:17,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:53:17" (3/3) ... [2022-11-18 20:53:17,846 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2022-11-18 20:53:17,855 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:53:17,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:53:17,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-18 20:53:17,866 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:53:18,246 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:53:18,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 321 transitions, 666 flow [2022-11-18 20:53:18,507 INFO L130 PetriNetUnfolder]: 23/318 cut-off events. [2022-11-18 20:53:18,508 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:53:18,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 23/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 790 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 250. Up to 2 conditions per place. [2022-11-18 20:53:18,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 321 transitions, 666 flow [2022-11-18 20:53:18,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 294 transitions, 606 flow [2022-11-18 20:53:18,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:53:18,544 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;@2dab6571, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:53:18,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2022-11-18 20:53:18,555 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-18 20:53:18,555 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:53:18,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:18,557 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] [2022-11-18 20:53:18,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-18 20:53:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:18,563 INFO L85 PathProgramCache]: Analyzing trace with hash 519815807, now seen corresponding path program 1 times [2022-11-18 20:53:18,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:18,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053149541] [2022-11-18 20:53:18,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:18,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:19,024 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 20:53:19,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:19,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053149541] [2022-11-18 20:53:19,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053149541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:19,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:19,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:53:19,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786708752] [2022-11-18 20:53:19,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:19,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:53:19,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:19,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:53:19,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:53:19,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 20:53:19,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 294 transitions, 606 flow. Second operand has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 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 20:53:19,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:19,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 20:53:19,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:19,837 INFO L130 PetriNetUnfolder]: 77/627 cut-off events. [2022-11-18 20:53:19,837 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-18 20:53:19,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 627 events. 77/627 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3124 event pairs, 28 based on Foata normal form. 90/547 useless extension candidates. Maximal degree in co-relation 451. Up to 69 conditions per place. [2022-11-18 20:53:19,853 INFO L137 encePairwiseOnDemand]: 296/321 looper letters, 42 selfloop transitions, 4 changer transitions 3/296 dead transitions. [2022-11-18 20:53:19,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 296 transitions, 720 flow [2022-11-18 20:53:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:53:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:53:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1459 transitions. [2022-11-18 20:53:19,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9090342679127725 [2022-11-18 20:53:19,875 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1459 transitions. [2022-11-18 20:53:19,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1459 transitions. [2022-11-18 20:53:19,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:19,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1459 transitions. [2022-11-18 20:53:19,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.8) internal successors, (1459), 5 states have internal predecessors, (1459), 0 states have call successors, (0), 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 20:53:19,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 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 20:53:19,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 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 20:53:19,904 INFO L175 Difference]: Start difference. First operand has 283 places, 294 transitions, 606 flow. Second operand 5 states and 1459 transitions. [2022-11-18 20:53:19,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 296 transitions, 720 flow [2022-11-18 20:53:19,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 296 transitions, 696 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:53:19,918 INFO L231 Difference]: Finished difference. Result has 276 places, 275 transitions, 580 flow [2022-11-18 20:53:19,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=580, PETRI_PLACES=276, PETRI_TRANSITIONS=275} [2022-11-18 20:53:19,925 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, -7 predicate places. [2022-11-18 20:53:19,925 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 275 transitions, 580 flow [2022-11-18 20:53:19,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 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 20:53:19,926 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:19,927 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] [2022-11-18 20:53:19,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:53:19,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-18 20:53:19,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:19,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1358057142, now seen corresponding path program 1 times [2022-11-18 20:53:19,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:19,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82907935] [2022-11-18 20:53:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:19,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:20,175 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 20:53:20,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:20,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82907935] [2022-11-18 20:53:20,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82907935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:53:20,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028290675] [2022-11-18 20:53:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:20,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:20,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:20,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:20,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:53:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:20,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:53:20,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:20,597 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 20:53:20,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:53:20,688 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 20:53:20,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028290675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:53:20,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:53:20,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:53:20,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152033205] [2022-11-18 20:53:20,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:53:20,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:53:20,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:20,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:53:20,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:53:20,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 20:53:20,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 275 transitions, 580 flow. Second operand has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 0 states have call successors, (0), 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 20:53:20,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:20,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 20:53:20,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:21,812 INFO L130 PetriNetUnfolder]: 191/1483 cut-off events. [2022-11-18 20:53:21,812 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2022-11-18 20:53:21,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 1483 events. 191/1483 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10266 event pairs, 70 based on Foata normal form. 3/1076 useless extension candidates. Maximal degree in co-relation 1436. Up to 64 conditions per place. [2022-11-18 20:53:21,841 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 93 selfloop transitions, 18 changer transitions 0/358 dead transitions. [2022-11-18 20:53:21,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 358 transitions, 1014 flow [2022-11-18 20:53:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:53:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:53:21,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5064 transitions. [2022-11-18 20:53:21,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8764278296988577 [2022-11-18 20:53:21,852 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5064 transitions. [2022-11-18 20:53:21,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5064 transitions. [2022-11-18 20:53:21,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:21,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5064 transitions. [2022-11-18 20:53:21,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 281.3333333333333) internal successors, (5064), 18 states have internal predecessors, (5064), 0 states have call successors, (0), 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 20:53:21,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 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 20:53:21,881 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 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 20:53:21,882 INFO L175 Difference]: Start difference. First operand has 276 places, 275 transitions, 580 flow. Second operand 18 states and 5064 transitions. [2022-11-18 20:53:21,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 358 transitions, 1014 flow [2022-11-18 20:53:21,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 358 transitions, 1012 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:53:21,890 INFO L231 Difference]: Finished difference. Result has 293 places, 287 transitions, 684 flow [2022-11-18 20:53:21,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=684, PETRI_PLACES=293, PETRI_TRANSITIONS=287} [2022-11-18 20:53:21,892 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 10 predicate places. [2022-11-18 20:53:21,892 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 287 transitions, 684 flow [2022-11-18 20:53:21,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 0 states have call successors, (0), 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 20:53:21,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:21,896 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] [2022-11-18 20:53:21,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:22,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:22,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-18 20:53:22,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash 849902484, now seen corresponding path program 1 times [2022-11-18 20:53:22,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:22,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315454631] [2022-11-18 20:53:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:22,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:22,228 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 20:53:22,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:22,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315454631] [2022-11-18 20:53:22,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315454631] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:53:22,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859258559] [2022-11-18 20:53:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:22,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:22,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:22,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:22,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:53:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:22,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:53:22,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:22,535 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 20:53:22,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:53:22,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859258559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:22,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:53:22,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:53:22,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116668329] [2022-11-18 20:53:22,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:22,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:53:22,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:22,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:53:22,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:22,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 20:53:22,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 287 transitions, 684 flow. Second operand has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 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 20:53:22,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:22,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 20:53:22,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:23,305 INFO L130 PetriNetUnfolder]: 191/1479 cut-off events. [2022-11-18 20:53:23,305 INFO L131 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2022-11-18 20:53:23,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1479 events. 191/1479 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10111 event pairs, 70 based on Foata normal form. 4/1073 useless extension candidates. Maximal degree in co-relation 1481. Up to 240 conditions per place. [2022-11-18 20:53:23,333 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 43 selfloop transitions, 11 changer transitions 0/301 dead transitions. [2022-11-18 20:53:23,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 301 transitions, 809 flow [2022-11-18 20:53:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:53:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:53:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1971 transitions. [2022-11-18 20:53:23,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.87716955941255 [2022-11-18 20:53:23,338 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1971 transitions. [2022-11-18 20:53:23,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1971 transitions. [2022-11-18 20:53:23,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:23,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1971 transitions. [2022-11-18 20:53:23,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.57142857142856) internal successors, (1971), 7 states have internal predecessors, (1971), 0 states have call successors, (0), 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 20:53:23,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 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 20:53:23,348 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 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 20:53:23,348 INFO L175 Difference]: Start difference. First operand has 293 places, 287 transitions, 684 flow. Second operand 7 states and 1971 transitions. [2022-11-18 20:53:23,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 301 transitions, 809 flow [2022-11-18 20:53:23,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 301 transitions, 777 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 20:53:23,355 INFO L231 Difference]: Finished difference. Result has 289 places, 283 transitions, 647 flow [2022-11-18 20:53:23,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=647, PETRI_PLACES=289, PETRI_TRANSITIONS=283} [2022-11-18 20:53:23,357 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 6 predicate places. [2022-11-18 20:53:23,357 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 283 transitions, 647 flow [2022-11-18 20:53:23,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 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 20:53:23,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:23,358 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] [2022-11-18 20:53:23,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:53:23,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:23,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-18 20:53:23,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:23,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1121272946, now seen corresponding path program 1 times [2022-11-18 20:53:23,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:23,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104053176] [2022-11-18 20:53:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:23,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:23,740 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 20:53:23,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:23,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104053176] [2022-11-18 20:53:23,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104053176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:23,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:23,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:53:23,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535280044] [2022-11-18 20:53:23,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:23,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:53:23,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:23,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:53:23,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:53:23,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 321 [2022-11-18 20:53:23,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 283 transitions, 647 flow. Second operand has 7 states, 7 states have (on average 265.14285714285717) internal successors, (1856), 7 states have internal predecessors, (1856), 0 states have call successors, (0), 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 20:53:23,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:23,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 321 [2022-11-18 20:53:23,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:25,232 INFO L130 PetriNetUnfolder]: 609/3471 cut-off events. [2022-11-18 20:53:25,232 INFO L131 PetriNetUnfolder]: For 149/161 co-relation queries the response was YES. [2022-11-18 20:53:25,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4657 conditions, 3471 events. 609/3471 cut-off events. For 149/161 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 29055 event pairs, 409 based on Foata normal form. 0/2370 useless extension candidates. Maximal degree in co-relation 4096. Up to 949 conditions per place. [2022-11-18 20:53:25,377 INFO L137 encePairwiseOnDemand]: 312/321 looper letters, 69 selfloop transitions, 8 changer transitions 0/315 dead transitions. [2022-11-18 20:53:25,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 315 transitions, 873 flow [2022-11-18 20:53:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:53:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:53:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2176 transitions. [2022-11-18 20:53:25,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8473520249221184 [2022-11-18 20:53:25,382 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2176 transitions. [2022-11-18 20:53:25,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2176 transitions. [2022-11-18 20:53:25,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:25,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2176 transitions. [2022-11-18 20:53:25,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 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 20:53:25,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 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 20:53:25,394 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 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 20:53:25,394 INFO L175 Difference]: Start difference. First operand has 289 places, 283 transitions, 647 flow. Second operand 8 states and 2176 transitions. [2022-11-18 20:53:25,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 315 transitions, 873 flow [2022-11-18 20:53:25,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 315 transitions, 859 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:53:25,400 INFO L231 Difference]: Finished difference. Result has 294 places, 285 transitions, 665 flow [2022-11-18 20:53:25,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=665, PETRI_PLACES=294, PETRI_TRANSITIONS=285} [2022-11-18 20:53:25,402 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 11 predicate places. [2022-11-18 20:53:25,402 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 285 transitions, 665 flow [2022-11-18 20:53:25,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 265.14285714285717) internal successors, (1856), 7 states have internal predecessors, (1856), 0 states have call successors, (0), 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 20:53:25,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:25,412 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] [2022-11-18 20:53:25,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:53:25,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-18 20:53:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash 456301925, now seen corresponding path program 1 times [2022-11-18 20:53:25,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:25,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553419030] [2022-11-18 20:53:25,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:25,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:25,699 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 20:53:25,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:25,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553419030] [2022-11-18 20:53:25,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553419030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:25,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:25,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:53:25,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497379402] [2022-11-18 20:53:25,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:25,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:53:25,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:25,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:53:25,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:53:25,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 321 [2022-11-18 20:53:25,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 285 transitions, 665 flow. Second operand has 10 states, 10 states have (on average 246.8) internal successors, (2468), 10 states have internal predecessors, (2468), 0 states have call successors, (0), 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 20:53:25,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:25,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 321 [2022-11-18 20:53:25,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:27,732 INFO L130 PetriNetUnfolder]: 1946/6302 cut-off events. [2022-11-18 20:53:27,732 INFO L131 PetriNetUnfolder]: For 615/627 co-relation queries the response was YES. [2022-11-18 20:53:27,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9348 conditions, 6302 events. 1946/6302 cut-off events. For 615/627 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 53986 event pairs, 884 based on Foata normal form. 12/4194 useless extension candidates. Maximal degree in co-relation 8685. Up to 2287 conditions per place. [2022-11-18 20:53:27,833 INFO L137 encePairwiseOnDemand]: 308/321 looper letters, 73 selfloop transitions, 12 changer transitions 0/313 dead transitions. [2022-11-18 20:53:27,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 313 transitions, 903 flow [2022-11-18 20:53:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:53:27,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:53:27,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3008 transitions. [2022-11-18 20:53:27,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7808930425752856 [2022-11-18 20:53:27,842 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3008 transitions. [2022-11-18 20:53:27,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3008 transitions. [2022-11-18 20:53:27,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:27,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3008 transitions. [2022-11-18 20:53:27,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 250.66666666666666) internal successors, (3008), 12 states have internal predecessors, (3008), 0 states have call successors, (0), 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 20:53:27,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 321.0) internal successors, (4173), 13 states have internal predecessors, (4173), 0 states have call successors, (0), 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 20:53:27,862 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 321.0) internal successors, (4173), 13 states have internal predecessors, (4173), 0 states have call successors, (0), 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 20:53:27,862 INFO L175 Difference]: Start difference. First operand has 294 places, 285 transitions, 665 flow. Second operand 12 states and 3008 transitions. [2022-11-18 20:53:27,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 313 transitions, 903 flow [2022-11-18 20:53:27,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 313 transitions, 893 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:53:27,871 INFO L231 Difference]: Finished difference. Result has 307 places, 290 transitions, 714 flow [2022-11-18 20:53:27,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=714, PETRI_PLACES=307, PETRI_TRANSITIONS=290} [2022-11-18 20:53:27,872 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 24 predicate places. [2022-11-18 20:53:27,872 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 290 transitions, 714 flow [2022-11-18 20:53:27,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 246.8) internal successors, (2468), 10 states have internal predecessors, (2468), 0 states have call successors, (0), 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 20:53:27,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:27,874 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] [2022-11-18 20:53:27,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:53:27,875 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-18 20:53:27,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:27,875 INFO L85 PathProgramCache]: Analyzing trace with hash 601016725, now seen corresponding path program 1 times [2022-11-18 20:53:27,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:27,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599837233] [2022-11-18 20:53:27,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:27,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:28,265 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 20:53:28,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:28,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599837233] [2022-11-18 20:53:28,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599837233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:28,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:28,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:53:28,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428708977] [2022-11-18 20:53:28,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:28,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:53:28,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:28,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:53:28,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:53:28,277 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 321 [2022-11-18 20:53:28,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 290 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 243.7) internal successors, (2437), 10 states have internal predecessors, (2437), 0 states have call successors, (0), 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 20:53:28,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:28,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 321 [2022-11-18 20:53:28,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:53:31,519 INFO L130 PetriNetUnfolder]: 3451/8987 cut-off events. [2022-11-18 20:53:31,520 INFO L131 PetriNetUnfolder]: For 1415/1427 co-relation queries the response was YES. [2022-11-18 20:53:31,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15360 conditions, 8987 events. 3451/8987 cut-off events. For 1415/1427 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 76805 event pairs, 2366 based on Foata normal form. 12/6114 useless extension candidates. Maximal degree in co-relation 14956. Up to 4739 conditions per place. [2022-11-18 20:53:31,663 INFO L137 encePairwiseOnDemand]: 309/321 looper letters, 71 selfloop transitions, 11 changer transitions 0/307 dead transitions. [2022-11-18 20:53:31,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 307 transitions, 926 flow [2022-11-18 20:53:31,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:53:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:53:31,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2487 transitions. [2022-11-18 20:53:31,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7747663551401869 [2022-11-18 20:53:31,680 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2487 transitions. [2022-11-18 20:53:31,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2487 transitions. [2022-11-18 20:53:31,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:53:31,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2487 transitions. [2022-11-18 20:53:31,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 248.7) internal successors, (2487), 10 states have internal predecessors, (2487), 0 states have call successors, (0), 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 20:53:31,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 321.0) internal successors, (3531), 11 states have internal predecessors, (3531), 0 states have call successors, (0), 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 20:53:31,697 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 321.0) internal successors, (3531), 11 states have internal predecessors, (3531), 0 states have call successors, (0), 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 20:53:31,698 INFO L175 Difference]: Start difference. First operand has 307 places, 290 transitions, 714 flow. Second operand 10 states and 2487 transitions. [2022-11-18 20:53:31,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 307 transitions, 926 flow [2022-11-18 20:53:31,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 307 transitions, 916 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:53:31,716 INFO L231 Difference]: Finished difference. Result has 314 places, 291 transitions, 735 flow [2022-11-18 20:53:31,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=735, PETRI_PLACES=314, PETRI_TRANSITIONS=291} [2022-11-18 20:53:31,720 INFO L288 CegarLoopForPetriNet]: 283 programPoint places, 31 predicate places. [2022-11-18 20:53:31,720 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 291 transitions, 735 flow [2022-11-18 20:53:31,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 243.7) internal successors, (2437), 10 states have internal predecessors, (2437), 0 states have call successors, (0), 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 20:53:31,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:53:31,722 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] [2022-11-18 20:53:31,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:53:31,722 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-11-18 20:53:31,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash -235587331, now seen corresponding path program 1 times [2022-11-18 20:53:31,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:31,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180355939] [2022-11-18 20:53:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:31,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:32,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:32,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:32,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180355939] [2022-11-18 20:53:32,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180355939] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:53:32,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810821120] [2022-11-18 20:53:32,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:32,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:53:32,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:53:32,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:53:32,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8ae188-486a-4868-a554-83d482b91332/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:53:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:33,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:53:33,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:53:33,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:53:33,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:53:33,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:53:33,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-18 20:53:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:33,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:53:33,851 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_121 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_121) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-11-18 20:53:33,977 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_121 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_121) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 9223372039002259456))) is different from false [2022-11-18 20:53:33,984 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_121 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_121) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-11-18 20:53:34,027 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:34,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-18 20:53:34,051 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:53:34,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-11-18 20:53:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:53:34,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810821120] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:53:34,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:53:34,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 40 [2022-11-18 20:53:34,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86415234] [2022-11-18 20:53:34,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:53:34,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:53:34,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:34,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:53:34,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1279, Unknown=6, NotChecked=222, Total=1640 [2022-11-18 20:53:34,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 321 [2022-11-18 20:53:34,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 291 transitions, 735 flow. Second operand has 41 states, 41 states have (on average 226.0731707317073) internal successors, (9269), 41 states have internal predecessors, (9269), 0 states have call successors, (0), 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 20:53:34,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:53:34,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 321 [2022-11-18 20:53:34,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand