./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8 --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 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b --- 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-e04fb08 [2022-11-16 11:39:00,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:39:00,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:39:00,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:39:00,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:39:00,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:39:00,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:39:00,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:39:00,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:39:00,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:39:00,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:39:00,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:39:00,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:39:00,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:39:00,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:39:00,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:39:00,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:39:00,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:39:00,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:39:00,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:39:00,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:39:00,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:39:00,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:39:00,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:39:00,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:39:00,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:39:00,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:39:00,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:39:00,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:39:00,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:39:00,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:39:00,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:39:00,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:39:00,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:39:00,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:39:00,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:39:00,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:39:00,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:39:00,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:39:00,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:39:00,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:39:00,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:39:00,307 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:39:00,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:39:00,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:39:00,309 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:39:00,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:39:00,310 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:39:00,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:39:00,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:39:00,311 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:39:00,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:39:00,313 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:39:00,313 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:39:00,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:39:00,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:39:00,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:39:00,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:39:00,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:39:00,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:39:00,315 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:39:00,316 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:39:00,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:39:00,316 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:39:00,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:39:00,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:39:00,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:39:00,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:39:00,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:39:00,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:39:00,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:39:00,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:39:00,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:39:00,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:39:00,321 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:39:00,321 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:39:00,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:39:00,322 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_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b [2022-11-16 11:39:00,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:39:00,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:39:00,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:39:00,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:39:00,711 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:39:00,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-11-16 11:39:00,784 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/data/7c961f099/319ef608f2184fbfa8b14c3dc7178941/FLAG2a579c1d7 [2022-11-16 11:39:01,366 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:39:01,369 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-11-16 11:39:01,387 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/data/7c961f099/319ef608f2184fbfa8b14c3dc7178941/FLAG2a579c1d7 [2022-11-16 11:39:01,682 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/data/7c961f099/319ef608f2184fbfa8b14c3dc7178941 [2022-11-16 11:39:01,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:39:01,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:39:01,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:39:01,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:39:01,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:39:01,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:39:01" (1/1) ... [2022-11-16 11:39:01,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39acc124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:01, skipping insertion in model container [2022-11-16 11:39:01,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:39:01" (1/1) ... [2022-11-16 11:39:01,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:39:01,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:39:02,063 WARN L229 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_40d83929-92d3-4876-9fce-23c113d23d52/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-11-16 11:39:02,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:39:02,096 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:39:02,144 WARN L229 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_40d83929-92d3-4876-9fce-23c113d23d52/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-11-16 11:39:02,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:39:02,171 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:39:02,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:02 WrapperNode [2022-11-16 11:39:02,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:39:02,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:39:02,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:39:02,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:39:02,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:02" (1/1) ... [2022-11-16 11:39:02,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:02" (1/1) ... [2022-11-16 11:39:02,253 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 325 [2022-11-16 11:39:02,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:39:02,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:39:02,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:39:02,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:39:02,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:02" (1/1) ... [2022-11-16 11:39:02,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:02" (1/1) ... [2022-11-16 11:39:02,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:02" (1/1) ... [2022-11-16 11:39:02,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:02" (1/1) ... [2022-11-16 11:39:02,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:02" (1/1) ... [2022-11-16 11:39:02,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:02" (1/1) ... [2022-11-16 11:39:02,291 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:02" (1/1) ... [2022-11-16 11:39:02,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:02" (1/1) ... [2022-11-16 11:39:02,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:39:02,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:39:02,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:39:02,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:39:02,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:02" (1/1) ... [2022-11-16 11:39:02,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:39:02,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:02,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:39:02,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:39:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:39:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:39:02,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:39:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:39:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:39:02,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:39:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:39:02,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:39:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:39:02,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:39:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:39:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:39:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:39:02,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:39:02,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:39:02,418 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:39:02,539 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:39:02,541 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:39:03,308 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:39:03,326 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:39:03,331 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 11:39:03,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:39:03 BoogieIcfgContainer [2022-11-16 11:39:03,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:39:03,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:39:03,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:39:03,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:39:03,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:39:01" (1/3) ... [2022-11-16 11:39:03,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d39f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:39:03, skipping insertion in model container [2022-11-16 11:39:03,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:39:02" (2/3) ... [2022-11-16 11:39:03,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d39f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:39:03, skipping insertion in model container [2022-11-16 11:39:03,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:39:03" (3/3) ... [2022-11-16 11:39:03,348 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2022-11-16 11:39:03,358 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:39:03,369 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:39:03,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-16 11:39:03,370 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:39:03,540 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:39:03,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 445 transitions, 914 flow [2022-11-16 11:39:03,808 INFO L130 PetriNetUnfolder]: 34/442 cut-off events. [2022-11-16 11:39:03,808 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:39:03,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 442 events. 34/442 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 941 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 336. Up to 2 conditions per place. [2022-11-16 11:39:03,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 421 places, 445 transitions, 914 flow [2022-11-16 11:39:03,833 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 421 transitions, 857 flow [2022-11-16 11:39:03,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:39:03,851 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;@14039290, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:39:03,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2022-11-16 11:39:03,864 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-16 11:39:03,865 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:39:03,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:03,866 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] [2022-11-16 11:39:03,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 11:39:03,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash 343321623, now seen corresponding path program 1 times [2022-11-16 11:39:03,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:03,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593040191] [2022-11-16 11:39:03,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:03,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:04,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:04,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593040191] [2022-11-16 11:39:04,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593040191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:04,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:04,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:39:04,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532190897] [2022-11-16 11:39:04,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:04,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:39:04,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:04,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:39:04,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:39:04,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 445 [2022-11-16 11:39:04,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 421 transitions, 857 flow. Second operand has 4 states, 4 states have (on average 381.5) internal successors, (1526), 4 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:04,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:04,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 445 [2022-11-16 11:39:04,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:04,799 INFO L130 PetriNetUnfolder]: 23/709 cut-off events. [2022-11-16 11:39:04,799 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-16 11:39:04,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 709 events. 23/709 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2748 event pairs, 0 based on Foata normal form. 52/659 useless extension candidates. Maximal degree in co-relation 613. Up to 44 conditions per place. [2022-11-16 11:39:04,818 INFO L137 encePairwiseOnDemand]: 404/445 looper letters, 58 selfloop transitions, 14 changer transitions 6/431 dead transitions. [2022-11-16 11:39:04,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 431 transitions, 1036 flow [2022-11-16 11:39:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:39:04,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:39:04,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2014 transitions. [2022-11-16 11:39:04,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9051685393258427 [2022-11-16 11:39:04,847 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2014 transitions. [2022-11-16 11:39:04,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2014 transitions. [2022-11-16 11:39:04,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:04,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2014 transitions. [2022-11-16 11:39:04,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 402.8) internal successors, (2014), 5 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:04,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:04,880 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:04,882 INFO L175 Difference]: Start difference. First operand has 398 places, 421 transitions, 857 flow. Second operand 5 states and 2014 transitions. [2022-11-16 11:39:04,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 431 transitions, 1036 flow [2022-11-16 11:39:04,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 431 transitions, 1018 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:39:04,906 INFO L231 Difference]: Finished difference. Result has 400 places, 405 transitions, 898 flow [2022-11-16 11:39:04,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=898, PETRI_PLACES=400, PETRI_TRANSITIONS=405} [2022-11-16 11:39:04,916 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 2 predicate places. [2022-11-16 11:39:04,916 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 405 transitions, 898 flow [2022-11-16 11:39:04,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 381.5) internal successors, (1526), 4 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:04,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:04,919 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] [2022-11-16 11:39:04,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:39:04,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 11:39:04,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:04,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1919962258, now seen corresponding path program 1 times [2022-11-16 11:39:04,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:04,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204034886] [2022-11-16 11:39:04,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:04,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:05,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:05,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204034886] [2022-11-16 11:39:05,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204034886] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:05,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771169596] [2022-11-16 11:39:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:05,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:05,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:05,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:05,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:39:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:05,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:39:05,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:05,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:05,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771169596] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:39:05,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:39:05,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:39:05,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688482466] [2022-11-16 11:39:05,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:39:05,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:39:05,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:39:05,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:39:05,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 445 [2022-11-16 11:39:05,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 405 transitions, 898 flow. Second operand has 12 states, 12 states have (on average 382.6666666666667) internal successors, (4592), 12 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:05,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:05,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 445 [2022-11-16 11:39:05,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:06,501 INFO L130 PetriNetUnfolder]: 56/1636 cut-off events. [2022-11-16 11:39:06,501 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-16 11:39:06,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 1636 events. 56/1636 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 10021 event pairs, 0 based on Foata normal form. 9/1420 useless extension candidates. Maximal degree in co-relation 1176. Up to 35 conditions per place. [2022-11-16 11:39:06,534 INFO L137 encePairwiseOnDemand]: 422/445 looper letters, 109 selfloop transitions, 62 changer transitions 0/524 dead transitions. [2022-11-16 11:39:06,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 524 transitions, 1580 flow [2022-11-16 11:39:06,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:39:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:39:06,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7020 transitions. [2022-11-16 11:39:06,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8764044943820225 [2022-11-16 11:39:06,551 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7020 transitions. [2022-11-16 11:39:06,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7020 transitions. [2022-11-16 11:39:06,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:06,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7020 transitions. [2022-11-16 11:39:06,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 390.0) internal successors, (7020), 18 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:06,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 445.0) internal successors, (8455), 19 states have internal predecessors, (8455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:06,592 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 445.0) internal successors, (8455), 19 states have internal predecessors, (8455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:06,593 INFO L175 Difference]: Start difference. First operand has 400 places, 405 transitions, 898 flow. Second operand 18 states and 7020 transitions. [2022-11-16 11:39:06,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 524 transitions, 1580 flow [2022-11-16 11:39:06,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 524 transitions, 1572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:39:06,606 INFO L231 Difference]: Finished difference. Result has 414 places, 447 transitions, 1260 flow [2022-11-16 11:39:06,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1260, PETRI_PLACES=414, PETRI_TRANSITIONS=447} [2022-11-16 11:39:06,608 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 16 predicate places. [2022-11-16 11:39:06,609 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 447 transitions, 1260 flow [2022-11-16 11:39:06,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 382.6666666666667) internal successors, (4592), 12 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:06,612 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:06,613 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] [2022-11-16 11:39:06,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:39:06,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 11:39:06,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 11:39:06,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:06,830 INFO L85 PathProgramCache]: Analyzing trace with hash -610711131, now seen corresponding path program 1 times [2022-11-16 11:39:06,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:06,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749362415] [2022-11-16 11:39:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:06,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:07,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:07,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749362415] [2022-11-16 11:39:07,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749362415] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:07,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384494906] [2022-11-16 11:39:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:07,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:07,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:07,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:07,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:39:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:07,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:39:07,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:07,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:39:07,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384494906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:07,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:39:07,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:39:07,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536538349] [2022-11-16 11:39:07,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:07,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:39:07,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:07,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:39:07,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:39:07,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 445 [2022-11-16 11:39:07,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 447 transitions, 1260 flow. Second operand has 6 states, 6 states have (on average 382.3333333333333) internal successors, (2294), 6 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:07,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:07,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 445 [2022-11-16 11:39:07,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:08,028 INFO L130 PetriNetUnfolder]: 56/1624 cut-off events. [2022-11-16 11:39:08,028 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-16 11:39:08,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 1624 events. 56/1624 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9962 event pairs, 0 based on Foata normal form. 12/1411 useless extension candidates. Maximal degree in co-relation 1529. Up to 68 conditions per place. [2022-11-16 11:39:08,063 INFO L137 encePairwiseOnDemand]: 428/445 looper letters, 59 selfloop transitions, 43 changer transitions 0/455 dead transitions. [2022-11-16 11:39:08,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 455 transitions, 1435 flow [2022-11-16 11:39:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:39:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:39:08,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2732 transitions. [2022-11-16 11:39:08,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8770465489566613 [2022-11-16 11:39:08,069 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2732 transitions. [2022-11-16 11:39:08,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2732 transitions. [2022-11-16 11:39:08,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:08,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2732 transitions. [2022-11-16 11:39:08,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 390.2857142857143) internal successors, (2732), 7 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:08,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:08,086 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:08,086 INFO L175 Difference]: Start difference. First operand has 414 places, 447 transitions, 1260 flow. Second operand 7 states and 2732 transitions. [2022-11-16 11:39:08,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 455 transitions, 1435 flow [2022-11-16 11:39:08,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 455 transitions, 1319 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 11:39:08,100 INFO L231 Difference]: Finished difference. Result has 408 places, 435 transitions, 1149 flow [2022-11-16 11:39:08,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1149, PETRI_PLACES=408, PETRI_TRANSITIONS=435} [2022-11-16 11:39:08,103 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 10 predicate places. [2022-11-16 11:39:08,103 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 435 transitions, 1149 flow [2022-11-16 11:39:08,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 382.3333333333333) internal successors, (2294), 6 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:08,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:08,105 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:08,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 11:39:08,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:08,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 11:39:08,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:08,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1984722729, now seen corresponding path program 2 times [2022-11-16 11:39:08,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:08,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104360648] [2022-11-16 11:39:08,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:08,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:08,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:08,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104360648] [2022-11-16 11:39:08,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104360648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:08,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379165297] [2022-11-16 11:39:08,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:39:08,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:08,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:08,566 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:08,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:39:08,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:39:08,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:39:08,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:39:08,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:39:08,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:39:09,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379165297] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:39:09,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:39:09,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-16 11:39:09,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801058147] [2022-11-16 11:39:09,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:39:09,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:39:09,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:09,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:39:09,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:39:09,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 445 [2022-11-16 11:39:09,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 435 transitions, 1149 flow. Second operand has 18 states, 18 states have (on average 369.0) internal successors, (6642), 18 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:09,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:09,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 445 [2022-11-16 11:39:09,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:10,221 INFO L130 PetriNetUnfolder]: 67/1909 cut-off events. [2022-11-16 11:39:10,221 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-11-16 11:39:10,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1909 events. 67/1909 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 12368 event pairs, 0 based on Foata normal form. 3/1642 useless extension candidates. Maximal degree in co-relation 1541. Up to 22 conditions per place. [2022-11-16 11:39:10,256 INFO L137 encePairwiseOnDemand]: 421/445 looper letters, 130 selfloop transitions, 67 changer transitions 0/535 dead transitions. [2022-11-16 11:39:10,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 535 transitions, 1790 flow [2022-11-16 11:39:10,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 11:39:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 11:39:10,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 7500 transitions. [2022-11-16 11:39:10,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8426966292134831 [2022-11-16 11:39:10,273 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 7500 transitions. [2022-11-16 11:39:10,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 7500 transitions. [2022-11-16 11:39:10,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:10,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 7500 transitions. [2022-11-16 11:39:10,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 375.0) internal successors, (7500), 20 states have internal predecessors, (7500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:10,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 445.0) internal successors, (9345), 21 states have internal predecessors, (9345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:10,316 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 445.0) internal successors, (9345), 21 states have internal predecessors, (9345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:10,316 INFO L175 Difference]: Start difference. First operand has 408 places, 435 transitions, 1149 flow. Second operand 20 states and 7500 transitions. [2022-11-16 11:39:10,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 535 transitions, 1790 flow [2022-11-16 11:39:10,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 535 transitions, 1707 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 11:39:10,329 INFO L231 Difference]: Finished difference. Result has 416 places, 440 transitions, 1223 flow [2022-11-16 11:39:10,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1223, PETRI_PLACES=416, PETRI_TRANSITIONS=440} [2022-11-16 11:39:10,331 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 18 predicate places. [2022-11-16 11:39:10,331 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 440 transitions, 1223 flow [2022-11-16 11:39:10,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 369.0) internal successors, (6642), 18 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:10,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:10,334 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:10,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:39:10,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:10,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 11:39:10,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:10,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1388926259, now seen corresponding path program 1 times [2022-11-16 11:39:10,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:10,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923512476] [2022-11-16 11:39:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:10,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:39:10,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:10,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923512476] [2022-11-16 11:39:10,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923512476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:39:10,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:39:10,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:39:10,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915283086] [2022-11-16 11:39:10,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:39:10,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:39:10,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:10,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:39:10,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:39:10,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 445 [2022-11-16 11:39:10,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 440 transitions, 1223 flow. Second operand has 5 states, 5 states have (on average 385.0) internal successors, (1925), 5 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:10,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:10,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 445 [2022-11-16 11:39:10,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:11,283 INFO L130 PetriNetUnfolder]: 56/1627 cut-off events. [2022-11-16 11:39:11,283 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2022-11-16 11:39:11,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 1627 events. 56/1627 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9645 event pairs, 0 based on Foata normal form. 3/1420 useless extension candidates. Maximal degree in co-relation 292. Up to 116 conditions per place. [2022-11-16 11:39:11,321 INFO L137 encePairwiseOnDemand]: 430/445 looper letters, 62 selfloop transitions, 20 changer transitions 0/444 dead transitions. [2022-11-16 11:39:11,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 444 transitions, 1391 flow [2022-11-16 11:39:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:39:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:39:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1956 transitions. [2022-11-16 11:39:11,327 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791011235955056 [2022-11-16 11:39:11,327 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1956 transitions. [2022-11-16 11:39:11,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1956 transitions. [2022-11-16 11:39:11,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:11,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1956 transitions. [2022-11-16 11:39:11,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 391.2) internal successors, (1956), 5 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:11,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:11,339 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:11,339 INFO L175 Difference]: Start difference. First operand has 416 places, 440 transitions, 1223 flow. Second operand 5 states and 1956 transitions. [2022-11-16 11:39:11,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 444 transitions, 1391 flow [2022-11-16 11:39:11,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 444 transitions, 1247 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-16 11:39:11,349 INFO L231 Difference]: Finished difference. Result has 406 places, 438 transitions, 1117 flow [2022-11-16 11:39:11,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1117, PETRI_PLACES=406, PETRI_TRANSITIONS=438} [2022-11-16 11:39:11,353 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 8 predicate places. [2022-11-16 11:39:11,353 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 438 transitions, 1117 flow [2022-11-16 11:39:11,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 385.0) internal successors, (1925), 5 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:11,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:11,354 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:11,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:39:11,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 11:39:11,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:11,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1925955083, now seen corresponding path program 1 times [2022-11-16 11:39:11,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:11,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111291714] [2022-11-16 11:39:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:11,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:39:11,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:11,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111291714] [2022-11-16 11:39:11,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111291714] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:11,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429478643] [2022-11-16 11:39:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:11,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:11,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:11,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:11,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:39:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:11,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:39:11,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:39:11,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:39:12,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429478643] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:39:12,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:39:12,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 11:39:12,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437559591] [2022-11-16 11:39:12,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:39:12,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:39:12,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:12,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:39:12,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:39:12,053 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 445 [2022-11-16 11:39:12,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 438 transitions, 1117 flow. Second operand has 15 states, 15 states have (on average 369.6666666666667) internal successors, (5545), 15 states have internal predecessors, (5545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:12,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:12,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 445 [2022-11-16 11:39:12,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:12,686 INFO L130 PetriNetUnfolder]: 34/1063 cut-off events. [2022-11-16 11:39:12,686 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-11-16 11:39:12,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 1063 events. 34/1063 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4789 event pairs, 0 based on Foata normal form. 6/943 useless extension candidates. Maximal degree in co-relation 915. Up to 60 conditions per place. [2022-11-16 11:39:12,711 INFO L137 encePairwiseOnDemand]: 421/445 looper letters, 77 selfloop transitions, 46 changer transitions 0/461 dead transitions. [2022-11-16 11:39:12,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 461 transitions, 1419 flow [2022-11-16 11:39:12,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:39:12,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:39:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4116 transitions. [2022-11-16 11:39:12,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8408580183861083 [2022-11-16 11:39:12,721 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4116 transitions. [2022-11-16 11:39:12,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4116 transitions. [2022-11-16 11:39:12,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:12,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4116 transitions. [2022-11-16 11:39:12,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 374.1818181818182) internal successors, (4116), 11 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:12,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 445.0) internal successors, (5340), 12 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:12,743 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 445.0) internal successors, (5340), 12 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:12,743 INFO L175 Difference]: Start difference. First operand has 406 places, 438 transitions, 1117 flow. Second operand 11 states and 4116 transitions. [2022-11-16 11:39:12,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 461 transitions, 1419 flow [2022-11-16 11:39:12,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 461 transitions, 1387 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:39:12,754 INFO L231 Difference]: Finished difference. Result has 415 places, 437 transitions, 1230 flow [2022-11-16 11:39:12,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1230, PETRI_PLACES=415, PETRI_TRANSITIONS=437} [2022-11-16 11:39:12,758 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 17 predicate places. [2022-11-16 11:39:12,758 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 437 transitions, 1230 flow [2022-11-16 11:39:12,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 369.6666666666667) internal successors, (5545), 15 states have internal predecessors, (5545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:12,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:12,761 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:12,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:39:12,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:39:12,973 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 11:39:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:12,974 INFO L85 PathProgramCache]: Analyzing trace with hash 253482805, now seen corresponding path program 2 times [2022-11-16 11:39:12,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:12,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689172240] [2022-11-16 11:39:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:12,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:13,382 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:39:13,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:13,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689172240] [2022-11-16 11:39:13,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689172240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:13,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922833453] [2022-11-16 11:39:13,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:39:13,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:13,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:13,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:13,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:39:13,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:39:13,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:39:13,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:39:13,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:39:13,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 11:39:14,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922833453] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:39:14,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:39:14,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-16 11:39:14,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039430813] [2022-11-16 11:39:14,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:39:14,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:39:14,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:39:14,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:39:14,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:39:14,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 445 [2022-11-16 11:39:14,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 437 transitions, 1230 flow. Second operand has 22 states, 22 states have (on average 371.72727272727275) internal successors, (8178), 22 states have internal predecessors, (8178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:14,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:39:14,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 445 [2022-11-16 11:39:14,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:39:14,712 INFO L130 PetriNetUnfolder]: 12/499 cut-off events. [2022-11-16 11:39:14,712 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-16 11:39:14,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 499 events. 12/499 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 802 event pairs, 0 based on Foata normal form. 6/463 useless extension candidates. Maximal degree in co-relation 281. Up to 28 conditions per place. [2022-11-16 11:39:14,719 INFO L137 encePairwiseOnDemand]: 421/445 looper letters, 86 selfloop transitions, 51 changer transitions 0/475 dead transitions. [2022-11-16 11:39:14,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 475 transitions, 1620 flow [2022-11-16 11:39:14,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:39:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 11:39:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 6348 transitions. [2022-11-16 11:39:14,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8391275611368143 [2022-11-16 11:39:14,732 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 6348 transitions. [2022-11-16 11:39:14,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 6348 transitions. [2022-11-16 11:39:14,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:39:14,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 6348 transitions. [2022-11-16 11:39:14,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 373.4117647058824) internal successors, (6348), 17 states have internal predecessors, (6348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:14,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 445.0) internal successors, (8010), 18 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:14,785 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 445.0) internal successors, (8010), 18 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:14,785 INFO L175 Difference]: Start difference. First operand has 415 places, 437 transitions, 1230 flow. Second operand 17 states and 6348 transitions. [2022-11-16 11:39:14,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 475 transitions, 1620 flow [2022-11-16 11:39:14,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 475 transitions, 1538 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-11-16 11:39:14,797 INFO L231 Difference]: Finished difference. Result has 424 places, 433 transitions, 1264 flow [2022-11-16 11:39:14,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1264, PETRI_PLACES=424, PETRI_TRANSITIONS=433} [2022-11-16 11:39:14,799 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 26 predicate places. [2022-11-16 11:39:14,799 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 433 transitions, 1264 flow [2022-11-16 11:39:14,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 371.72727272727275) internal successors, (8178), 22 states have internal predecessors, (8178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:39:14,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:39:14,802 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:39:14,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:39:15,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 11:39:15,008 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 11:39:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:39:15,009 INFO L85 PathProgramCache]: Analyzing trace with hash 804793461, now seen corresponding path program 3 times [2022-11-16 11:39:15,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:39:15,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937497660] [2022-11-16 11:39:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:39:15,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:39:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:39:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 27 proven. 187 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-16 11:39:20,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:39:20,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937497660] [2022-11-16 11:39:20,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937497660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:39:20,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926124443] [2022-11-16 11:39:20,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:39:20,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:39:20,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:39:20,252 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:39:20,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:39:20,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 11:39:20,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:39:20,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-16 11:39:20,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:39:21,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-16 11:39:21,675 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 [2022-11-16 11:39:21,883 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-16 11:39:21,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 23 treesize of output 28 [2022-11-16 11:39:22,331 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-16 11:39:22,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 27 treesize of output 32 [2022-11-16 11:39:22,706 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-16 11:39:22,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 27 treesize of output 32 [2022-11-16 11:39:23,053 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-16 11:39:23,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 27 treesize of output 32 [2022-11-16 11:39:23,786 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:39:23,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-11-16 11:39:23,952 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 14 treesize of output 16 [2022-11-16 11:39:24,058 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 14 treesize of output 16 [2022-11-16 11:39:24,158 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 14 treesize of output 16 [2022-11-16 11:39:24,260 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 14 treesize of output 16 [2022-11-16 11:39:24,375 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 14 treesize of output 16 [2022-11-16 11:39:24,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:39:24,573 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 14 treesize of output 16 [2022-11-16 11:39:24,675 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 15 treesize of output 7 [2022-11-16 11:39:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 37 proven. 124 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-16 11:39:24,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:39:25,202 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_317 (Array Int Int)) (v_ArrVal_316 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_316) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_317) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-16 11:40:05,411 INFO L321 Elim1Store]: treesize reduction 280, result has 34.1 percent of original size [2022-11-16 11:40:05,412 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 5 case distinctions, treesize of input 53 treesize of output 158 [2022-11-16 11:40:05,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:40:05,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 246 treesize of output 318 [2022-11-16 11:40:05,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 106 treesize of output 98 [2022-11-16 11:40:05,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 98 treesize of output 94 [2022-11-16 11:40:08,658 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:40:08,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 28 treesize of output 33 [2022-11-16 11:40:09,304 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 124 trivial. 29 not checked. [2022-11-16 11:40:09,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926124443] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:09,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:40:09,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 100 [2022-11-16 11:40:09,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756364913] [2022-11-16 11:40:09,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:09,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-11-16 11:40:09,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:09,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-11-16 11:40:09,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=654, Invalid=9190, Unknown=60, NotChecked=196, Total=10100 [2022-11-16 11:40:09,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 445 [2022-11-16 11:40:09,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 433 transitions, 1264 flow. Second operand has 101 states, 101 states have (on average 293.1485148514852) internal successors, (29608), 101 states have internal predecessors, (29608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:09,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:09,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 445 [2022-11-16 11:40:09,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:32,230 INFO L130 PetriNetUnfolder]: 5894/31397 cut-off events. [2022-11-16 11:40:32,230 INFO L131 PetriNetUnfolder]: For 197/563 co-relation queries the response was YES. [2022-11-16 11:40:32,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39875 conditions, 31397 events. 5894/31397 cut-off events. For 197/563 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 434299 event pairs, 1390 based on Foata normal form. 4/25233 useless extension candidates. Maximal degree in co-relation 39234. Up to 1864 conditions per place. [2022-11-16 11:40:32,844 INFO L137 encePairwiseOnDemand]: 394/445 looper letters, 331 selfloop transitions, 97 changer transitions 0/694 dead transitions. [2022-11-16 11:40:32,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 694 transitions, 2698 flow [2022-11-16 11:40:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-16 11:40:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2022-11-16 11:40:32,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 20930 transitions. [2022-11-16 11:40:32,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6624465896502612 [2022-11-16 11:40:32,926 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 20930 transitions. [2022-11-16 11:40:32,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 20930 transitions. [2022-11-16 11:40:32,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:32,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 20930 transitions. [2022-11-16 11:40:33,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 294.7887323943662) internal successors, (20930), 71 states have internal predecessors, (20930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 445.0) internal successors, (32040), 72 states have internal predecessors, (32040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,121 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 445.0) internal successors, (32040), 72 states have internal predecessors, (32040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,121 INFO L175 Difference]: Start difference. First operand has 424 places, 433 transitions, 1264 flow. Second operand 71 states and 20930 transitions. [2022-11-16 11:40:33,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 694 transitions, 2698 flow [2022-11-16 11:40:33,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 694 transitions, 2596 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-16 11:40:33,157 INFO L231 Difference]: Finished difference. Result has 502 places, 473 transitions, 1600 flow [2022-11-16 11:40:33,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=1600, PETRI_PLACES=502, PETRI_TRANSITIONS=473} [2022-11-16 11:40:33,161 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 104 predicate places. [2022-11-16 11:40:33,161 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 473 transitions, 1600 flow [2022-11-16 11:40:33,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 293.1485148514852) internal successors, (29608), 101 states have internal predecessors, (29608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:33,173 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:33,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:33,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:33,382 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 11:40:33,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:33,382 INFO L85 PathProgramCache]: Analyzing trace with hash -821205388, now seen corresponding path program 1 times [2022-11-16 11:40:33,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:33,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914648805] [2022-11-16 11:40:33,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:33,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-16 11:40:33,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:33,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914648805] [2022-11-16 11:40:33,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914648805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:33,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:33,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:33,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857235443] [2022-11-16 11:40:33,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:33,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:33,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:33,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:33,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 445 [2022-11-16 11:40:33,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 473 transitions, 1600 flow. Second operand has 4 states, 4 states have (on average 394.75) internal successors, (1579), 4 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:33,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:33,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 445 [2022-11-16 11:40:33,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:35,180 INFO L130 PetriNetUnfolder]: 208/2472 cut-off events. [2022-11-16 11:40:35,181 INFO L131 PetriNetUnfolder]: For 486/488 co-relation queries the response was YES. [2022-11-16 11:40:35,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3697 conditions, 2472 events. 208/2472 cut-off events. For 486/488 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 18775 event pairs, 60 based on Foata normal form. 16/2136 useless extension candidates. Maximal degree in co-relation 3509. Up to 211 conditions per place. [2022-11-16 11:40:35,244 INFO L137 encePairwiseOnDemand]: 438/445 looper letters, 47 selfloop transitions, 8 changer transitions 0/485 dead transitions. [2022-11-16 11:40:35,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 485 transitions, 1730 flow [2022-11-16 11:40:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:40:35,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:40:35,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1617 transitions. [2022-11-16 11:40:35,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9084269662921348 [2022-11-16 11:40:35,249 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1617 transitions. [2022-11-16 11:40:35,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1617 transitions. [2022-11-16 11:40:35,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:35,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1617 transitions. [2022-11-16 11:40:35,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 404.25) internal successors, (1617), 4 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,258 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,258 INFO L175 Difference]: Start difference. First operand has 502 places, 473 transitions, 1600 flow. Second operand 4 states and 1617 transitions. [2022-11-16 11:40:35,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 485 transitions, 1730 flow [2022-11-16 11:40:35,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 485 transitions, 1664 flow, removed 2 selfloop flow, removed 20 redundant places. [2022-11-16 11:40:35,276 INFO L231 Difference]: Finished difference. Result has 487 places, 472 transitions, 1564 flow [2022-11-16 11:40:35,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1564, PETRI_PLACES=487, PETRI_TRANSITIONS=472} [2022-11-16 11:40:35,279 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 89 predicate places. [2022-11-16 11:40:35,279 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 472 transitions, 1564 flow [2022-11-16 11:40:35,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 394.75) internal successors, (1579), 4 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:35,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:35,280 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:35,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:40:35,281 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 11:40:35,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:35,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1612848059, now seen corresponding path program 1 times [2022-11-16 11:40:35,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:35,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681185626] [2022-11-16 11:40:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:35,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 11 proven. 108 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-16 11:40:40,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:40,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681185626] [2022-11-16 11:40:40,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681185626] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:40,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183393493] [2022-11-16 11:40:40,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:40,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:40,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:40,150 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:40,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:40:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:40,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-16 11:40:40,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:40,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-16 11:40:41,165 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 15 treesize of output 11 [2022-11-16 11:40:41,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:40:41,539 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 23 treesize of output 22 [2022-11-16 11:40:41,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:40:41,873 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 23 treesize of output 22 [2022-11-16 11:40:42,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:40:42,224 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 23 treesize of output 22 [2022-11-16 11:40:42,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:40:42,610 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 23 treesize of output 22 [2022-11-16 11:40:43,387 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:40:43,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-11-16 11:40:43,613 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 14 treesize of output 16 [2022-11-16 11:40:43,749 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 14 treesize of output 16 [2022-11-16 11:40:43,874 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 14 treesize of output 16 [2022-11-16 11:40:44,017 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 14 treesize of output 16 [2022-11-16 11:40:44,165 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 14 treesize of output 16 [2022-11-16 11:40:44,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:40:44,505 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 14 treesize of output 16 [2022-11-16 11:40:44,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:40:44,728 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 14 treesize of output 16 [2022-11-16 11:40:44,802 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 15 treesize of output 7 [2022-11-16 11:40:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 48 proven. 76 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-16 11:40:44,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:45,863 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int)) (v_ArrVal_471 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc28#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_470) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_471) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-16 11:42:21,379 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-16 11:42:21,379 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 5 case distinctions, treesize of input 56 treesize of output 77 [2022-11-16 11:42:21,399 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:42:21,399 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 490 treesize of output 476 [2022-11-16 11:42:21,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 231 treesize of output 215 [2022-11-16 11:42:21,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 446 treesize of output 414 [2022-11-16 11:42:21,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 414 treesize of output 406 [2022-11-16 11:42:42,791 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:42:42,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 29 treesize of output 34 [2022-11-16 11:42:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 31 proven. 82 refuted. 11 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-16 11:42:43,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183393493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:42:43,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:42:43,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 32] total 86 [2022-11-16 11:42:43,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093067219] [2022-11-16 11:42:43,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:42:43,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-11-16 11:42:43,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:42:43,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-11-16 11:42:43,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=6686, Unknown=97, NotChecked=168, Total=7482 [2022-11-16 11:42:43,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 445 [2022-11-16 11:42:43,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 472 transitions, 1564 flow. Second operand has 87 states, 87 states have (on average 263.5632183908046) internal successors, (22930), 87 states have internal predecessors, (22930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:43,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:42:43,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 445 [2022-11-16 11:42:43,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:43:09,086 INFO L130 PetriNetUnfolder]: 8733/42623 cut-off events. [2022-11-16 11:43:09,086 INFO L131 PetriNetUnfolder]: For 6593/6596 co-relation queries the response was YES. [2022-11-16 11:43:09,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59775 conditions, 42623 events. 8733/42623 cut-off events. For 6593/6596 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 615786 event pairs, 823 based on Foata normal form. 25/35498 useless extension candidates. Maximal degree in co-relation 59529. Up to 3310 conditions per place. [2022-11-16 11:43:10,176 INFO L137 encePairwiseOnDemand]: 395/445 looper letters, 363 selfloop transitions, 115 changer transitions 0/727 dead transitions. [2022-11-16 11:43:10,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 727 transitions, 3390 flow [2022-11-16 11:43:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-16 11:43:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-11-16 11:43:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 16988 transitions. [2022-11-16 11:43:10,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5964887640449438 [2022-11-16 11:43:10,199 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 16988 transitions. [2022-11-16 11:43:10,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 16988 transitions. [2022-11-16 11:43:10,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:43:10,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 16988 transitions. [2022-11-16 11:43:10,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 265.4375) internal successors, (16988), 64 states have internal predecessors, (16988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:10,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 445.0) internal successors, (28925), 65 states have internal predecessors, (28925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:10,278 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 445.0) internal successors, (28925), 65 states have internal predecessors, (28925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:10,278 INFO L175 Difference]: Start difference. First operand has 487 places, 472 transitions, 1564 flow. Second operand 64 states and 16988 transitions. [2022-11-16 11:43:10,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 727 transitions, 3390 flow [2022-11-16 11:43:10,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 727 transitions, 3390 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:43:10,338 INFO L231 Difference]: Finished difference. Result has 566 places, 513 transitions, 2176 flow [2022-11-16 11:43:10,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=2176, PETRI_PLACES=566, PETRI_TRANSITIONS=513} [2022-11-16 11:43:10,341 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 168 predicate places. [2022-11-16 11:43:10,342 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 513 transitions, 2176 flow [2022-11-16 11:43:10,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 263.5632183908046) internal successors, (22930), 87 states have internal predecessors, (22930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:43:10,346 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:43:10,346 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:10,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:43:10,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:43:10,553 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-16 11:43:10,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:10,553 INFO L85 PathProgramCache]: Analyzing trace with hash -480971830, now seen corresponding path program 1 times [2022-11-16 11:43:10,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:10,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679384313] [2022-11-16 11:43:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:10,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 27 proven. 68 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-16 11:43:13,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:13,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679384313] [2022-11-16 11:43:13,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679384313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:43:13,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070611129] [2022-11-16 11:43:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:13,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:43:13,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:13,640 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:43:13,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40d83929-92d3-4876-9fce-23c113d23d52/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:43:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:13,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-16 11:43:13,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:43:15,027 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 15 treesize of output 11 [2022-11-16 11:43:15,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:43:15,335 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 23 treesize of output 22 [2022-11-16 11:43:15,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:43:15,584 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 23 treesize of output 22 [2022-11-16 11:43:15,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:43:15,847 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 23 treesize of output 22 [2022-11-16 11:43:16,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:43:16,127 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 23 treesize of output 22 [2022-11-16 11:43:16,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:43:16,638 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 14 treesize of output 16 [2022-11-16 11:43:16,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:43:16,755 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 14 treesize of output 16 [2022-11-16 11:43:16,843 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 15 treesize of output 7 [2022-11-16 11:43:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 48 proven. 47 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-16 11:43:16,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:43:17,176 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_575 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_575) c_~o_4~0.base) c_~o_4~0.offset) 9223372039002259456)) is different from false [2022-11-16 11:43:17,206 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_575 (Array Int Int)) (v_ArrVal_574 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_574) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_575) c_~o_4~0.base) c_~o_4~0.offset) 9223372039002259456)) is different from false [2022-11-16 11:43:17,251 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_575 (Array Int Int)) (v_ArrVal_574 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_574) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_575) |c_ULTIMATE.start_main_#t~ret15#1.base|) |c_ULTIMATE.start_main_#t~ret15#1.offset|) 9223372039002259456)) is different from false [2022-11-16 11:43:17,400 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_575 (Array Int Int)) (v_ArrVal_574 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_574) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_575) |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 [2022-11-16 11:43:17,438 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_573 Int) (v_ArrVal_575 (Array Int Int)) (v_ArrVal_574 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~3#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_573)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_574) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_575) |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 [2022-11-16 11:44:33,046 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-16 11:44:33,046 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 5 case distinctions, treesize of input 53 treesize of output 74 [2022-11-16 11:44:33,057 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:44:33,057 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 126 treesize of output 120 [2022-11-16 11:44:33,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 106 treesize of output 98 [2022-11-16 11:44:33,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 51 treesize of output 47 [2022-11-16 11:44:54,311 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 37 proven. 9 refuted. 5 times theorem prover too weak. 190 trivial. 44 not checked. [2022-11-16 11:44:54,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070611129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:44:54,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:44:54,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 29] total 72 [2022-11-16 11:44:54,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793640643] [2022-11-16 11:44:54,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:44:54,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-11-16 11:44:54,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:54,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-11-16 11:44:54,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=4072, Unknown=66, NotChecked=680, Total=5256 [2022-11-16 11:44:54,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 445 [2022-11-16 11:44:54,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 513 transitions, 2176 flow. Second operand has 73 states, 73 states have (on average 307.82191780821915) internal successors, (22471), 73 states have internal predecessors, (22471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:54,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:44:54,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 445 [2022-11-16 11:44:54,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand