./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/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_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/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_45e41186-b620-4fc6-8941-796da00ae9ff/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 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --- 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 11:11:55,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:11:55,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:11:55,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:11:55,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:11:55,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:11:55,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:11:55,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:11:55,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:11:55,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:11:55,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:11:55,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:11:55,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:11:55,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:11:55,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:11:55,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:11:55,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:11:55,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:11:55,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:11:55,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:11:55,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:11:55,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:11:55,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:11:55,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:11:55,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:11:55,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:11:55,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:11:55,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:11:55,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:11:55,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:11:55,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:11:55,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:11:55,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:11:55,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:11:55,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:11:55,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:11:55,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:11:55,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:11:55,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:11:55,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:11:55,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:11:55,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:11:55,286 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:11:55,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:11:55,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:11:55,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:11:55,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:11:55,289 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:11:55,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:11:55,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:11:55,290 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:11:55,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:11:55,291 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:11:55,291 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:11:55,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:11:55,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:11:55,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:11:55,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:11:55,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:11:55,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:11:55,293 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:11:55,294 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:11:55,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:11:55,294 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:11:55,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:11:55,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:11:55,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:11:55,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:11:55,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:11:55,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:11:55,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:11:55,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:11:55,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:11:55,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:11:55,298 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:11:55,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:11:55,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:11:55,298 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_45e41186-b620-4fc6-8941-796da00ae9ff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d [2022-11-16 11:11:55,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:11:55,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:11:55,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:11:55,656 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:11:55,657 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:11:55,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-11-16 11:11:55,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/data/a9d44659e/08b85fbde4854f85b20c59320f7576f6/FLAGbcbc215dc [2022-11-16 11:11:56,261 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:11:56,262 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-11-16 11:11:56,270 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/data/a9d44659e/08b85fbde4854f85b20c59320f7576f6/FLAGbcbc215dc [2022-11-16 11:11:56,595 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/data/a9d44659e/08b85fbde4854f85b20c59320f7576f6 [2022-11-16 11:11:56,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:11:56,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:11:56,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:11:56,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:11:56,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:11:56,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:11:56" (1/1) ... [2022-11-16 11:11:56,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309b4182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:56, skipping insertion in model container [2022-11-16 11:11:56,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:11:56" (1/1) ... [2022-11-16 11:11:56,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:11:56,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:11:56,937 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_45e41186-b620-4fc6-8941-796da00ae9ff/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-11-16 11:11:56,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:11:56,958 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:11:56,989 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_45e41186-b620-4fc6-8941-796da00ae9ff/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-11-16 11:11:56,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:11:57,011 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:11:57,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:57 WrapperNode [2022-11-16 11:11:57,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:11:57,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:11:57,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:11:57,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:11:57,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:57" (1/1) ... [2022-11-16 11:11:57,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:57" (1/1) ... [2022-11-16 11:11:57,074 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 349 [2022-11-16 11:11:57,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:11:57,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:11:57,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:11:57,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:11:57,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:57" (1/1) ... [2022-11-16 11:11:57,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:57" (1/1) ... [2022-11-16 11:11:57,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:57" (1/1) ... [2022-11-16 11:11:57,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:57" (1/1) ... [2022-11-16 11:11:57,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:57" (1/1) ... [2022-11-16 11:11:57,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:57" (1/1) ... [2022-11-16 11:11:57,111 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:57" (1/1) ... [2022-11-16 11:11:57,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:57" (1/1) ... [2022-11-16 11:11:57,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:11:57,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:11:57,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:11:57,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:11:57,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:57" (1/1) ... [2022-11-16 11:11:57,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:11:57,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:57,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:11:57,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:11:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:11:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:11:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:11:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:11:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:11:57,240 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:11:57,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:11:57,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:11:57,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:11:57,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:11:57,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:11:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:11:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:11:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:11:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:11:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:11:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:11:57,244 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 11:11:57,448 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:11:57,451 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:11:58,242 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:11:58,535 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:11:58,535 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 11:11:58,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:11:58 BoogieIcfgContainer [2022-11-16 11:11:58,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:11:58,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:11:58,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:11:58,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:11:58,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:11:56" (1/3) ... [2022-11-16 11:11:58,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654135e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:11:58, skipping insertion in model container [2022-11-16 11:11:58,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:11:57" (2/3) ... [2022-11-16 11:11:58,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654135e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:11:58, skipping insertion in model container [2022-11-16 11:11:58,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:11:58" (3/3) ... [2022-11-16 11:11:58,551 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2022-11-16 11:11:58,563 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:11:58,576 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:11:58,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-16 11:11:58,576 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:11:58,752 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:11:58,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 320 transitions, 664 flow [2022-11-16 11:11:58,934 INFO L130 PetriNetUnfolder]: 25/317 cut-off events. [2022-11-16 11:11:58,935 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:11:58,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 317 events. 25/317 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 383 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 268. Up to 4 conditions per place. [2022-11-16 11:11:58,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 320 transitions, 664 flow [2022-11-16 11:11:58,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 296 transitions, 607 flow [2022-11-16 11:11:58,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:11:58,971 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;@349702ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:11:58,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-16 11:11:58,988 INFO L130 PetriNetUnfolder]: 3/77 cut-off events. [2022-11-16 11:11:58,989 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:11:58,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:11:58,990 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] [2022-11-16 11:11:58,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:11:58,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:58,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1854184304, now seen corresponding path program 1 times [2022-11-16 11:11:59,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:59,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665457371] [2022-11-16 11:11:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:59,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:59,520 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 11:11:59,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:59,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665457371] [2022-11-16 11:11:59,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665457371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:59,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:59,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:59,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25856365] [2022-11-16 11:11:59,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:59,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:11:59,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:11:59,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:11:59,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 320 [2022-11-16 11:11:59,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 296 transitions, 607 flow. Second operand has 4 states, 4 states have (on average 232.5) internal successors, (930), 4 states have internal predecessors, (930), 0 states have call successors, (0), 0 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 11:11:59,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:11:59,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 320 [2022-11-16 11:11:59,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:02,742 INFO L130 PetriNetUnfolder]: 4253/8798 cut-off events. [2022-11-16 11:12:02,742 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-11-16 11:12:02,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14891 conditions, 8798 events. 4253/8798 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 80211 event pairs, 2222 based on Foata normal form. 1032/5226 useless extension candidates. Maximal degree in co-relation 6749. Up to 2820 conditions per place. [2022-11-16 11:12:02,866 INFO L137 encePairwiseOnDemand]: 278/320 looper letters, 104 selfloop transitions, 14 changer transitions 7/328 dead transitions. [2022-11-16 11:12:02,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 328 transitions, 922 flow [2022-11-16 11:12:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:12:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:12:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1317 transitions. [2022-11-16 11:12:02,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823125 [2022-11-16 11:12:02,894 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1317 transitions. [2022-11-16 11:12:02,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1317 transitions. [2022-11-16 11:12:02,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:02,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1317 transitions. [2022-11-16 11:12:02,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 263.4) internal successors, (1317), 5 states have internal predecessors, (1317), 0 states have call successors, (0), 0 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 11:12:02,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 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 11:12:02,926 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 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 11:12:02,928 INFO L175 Difference]: Start difference. First operand has 282 places, 296 transitions, 607 flow. Second operand 5 states and 1317 transitions. [2022-11-16 11:12:02,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 328 transitions, 922 flow [2022-11-16 11:12:02,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 328 transitions, 904 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:12:02,953 INFO L231 Difference]: Finished difference. Result has 278 places, 278 transitions, 644 flow [2022-11-16 11:12:02,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=644, PETRI_PLACES=278, PETRI_TRANSITIONS=278} [2022-11-16 11:12:02,961 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, -4 predicate places. [2022-11-16 11:12:02,962 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 278 transitions, 644 flow [2022-11-16 11:12:02,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 232.5) internal successors, (930), 4 states have internal predecessors, (930), 0 states have call successors, (0), 0 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 11:12:02,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:02,964 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:02,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:12:02,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:12:02,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:02,968 INFO L85 PathProgramCache]: Analyzing trace with hash 541435390, now seen corresponding path program 1 times [2022-11-16 11:12:02,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:02,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129894460] [2022-11-16 11:12:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:02,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:03,283 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 11:12:03,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:03,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129894460] [2022-11-16 11:12:03,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129894460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:03,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648836653] [2022-11-16 11:12:03,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:03,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:03,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:03,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:03,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:12:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:03,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:12:03,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:03,588 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 11:12:03,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:03,682 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 11:12:03,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648836653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:03,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:12:03,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:12:03,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731480328] [2022-11-16 11:12:03,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:03,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:12:03,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:12:03,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:12:03,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 320 [2022-11-16 11:12:03,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 278 transitions, 644 flow. Second operand has 12 states, 12 states have (on average 233.66666666666666) internal successors, (2804), 12 states have internal predecessors, (2804), 0 states have call successors, (0), 0 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 11:12:03,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:03,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 320 [2022-11-16 11:12:03,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:09,597 INFO L130 PetriNetUnfolder]: 10631/21828 cut-off events. [2022-11-16 11:12:09,598 INFO L131 PetriNetUnfolder]: For 323/323 co-relation queries the response was YES. [2022-11-16 11:12:09,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36791 conditions, 21828 events. 10631/21828 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 1185. Compared 217436 event pairs, 5555 based on Foata normal form. 9/10362 useless extension candidates. Maximal degree in co-relation 29064. Up to 2811 conditions per place. [2022-11-16 11:12:09,881 INFO L137 encePairwiseOnDemand]: 297/320 looper letters, 224 selfloop transitions, 62 changer transitions 0/489 dead transitions. [2022-11-16 11:12:09,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 489 transitions, 1740 flow [2022-11-16 11:12:09,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:12:09,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:12:09,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4453 transitions. [2022-11-16 11:12:09,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7730902777777777 [2022-11-16 11:12:09,893 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4453 transitions. [2022-11-16 11:12:09,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4453 transitions. [2022-11-16 11:12:09,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:09,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4453 transitions. [2022-11-16 11:12:09,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 247.38888888888889) internal successors, (4453), 18 states have internal predecessors, (4453), 0 states have call successors, (0), 0 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 11:12:09,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 320.0) internal successors, (6080), 19 states have internal predecessors, (6080), 0 states have call successors, (0), 0 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 11:12:09,925 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 320.0) internal successors, (6080), 19 states have internal predecessors, (6080), 0 states have call successors, (0), 0 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 11:12:09,925 INFO L175 Difference]: Start difference. First operand has 278 places, 278 transitions, 644 flow. Second operand 18 states and 4453 transitions. [2022-11-16 11:12:09,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 489 transitions, 1740 flow [2022-11-16 11:12:09,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 489 transitions, 1732 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:12:09,941 INFO L231 Difference]: Finished difference. Result has 291 places, 320 transitions, 1006 flow [2022-11-16 11:12:09,942 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1006, PETRI_PLACES=291, PETRI_TRANSITIONS=320} [2022-11-16 11:12:09,942 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, 9 predicate places. [2022-11-16 11:12:09,943 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 320 transitions, 1006 flow [2022-11-16 11:12:09,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 233.66666666666666) internal successors, (2804), 12 states have internal predecessors, (2804), 0 states have call successors, (0), 0 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 11:12:09,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:09,947 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:09,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:10,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 11:12:10,152 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:12:10,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:10,153 INFO L85 PathProgramCache]: Analyzing trace with hash -395371096, now seen corresponding path program 1 times [2022-11-16 11:12:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:10,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638087316] [2022-11-16 11:12:10,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:10,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:10,317 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 11:12:10,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:10,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638087316] [2022-11-16 11:12:10,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638087316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:10,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096510012] [2022-11-16 11:12:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:10,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:10,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:10,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:10,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:12:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:10,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:12:10,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:10,648 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 11:12:10,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:12:10,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096510012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:10,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:12:10,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:12:10,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160521027] [2022-11-16 11:12:10,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:10,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:12:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:10,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:12:10,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:12:10,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 320 [2022-11-16 11:12:10,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 320 transitions, 1006 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 11:12:10,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:10,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 320 [2022-11-16 11:12:10,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:15,335 INFO L130 PetriNetUnfolder]: 10631/21816 cut-off events. [2022-11-16 11:12:15,335 INFO L131 PetriNetUnfolder]: For 475/475 co-relation queries the response was YES. [2022-11-16 11:12:15,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36847 conditions, 21816 events. 10631/21816 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 1189. Compared 217779 event pairs, 5555 based on Foata normal form. 12/10353 useless extension candidates. Maximal degree in co-relation 29434. Up to 11172 conditions per place. [2022-11-16 11:12:15,553 INFO L137 encePairwiseOnDemand]: 303/320 looper letters, 105 selfloop transitions, 43 changer transitions 0/351 dead transitions. [2022-11-16 11:12:15,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 351 transitions, 1319 flow [2022-11-16 11:12:15,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:12:15,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:12:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1735 transitions. [2022-11-16 11:12:15,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7745535714285714 [2022-11-16 11:12:15,559 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1735 transitions. [2022-11-16 11:12:15,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1735 transitions. [2022-11-16 11:12:15,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:15,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1735 transitions. [2022-11-16 11:12:15,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 247.85714285714286) internal successors, (1735), 7 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:15,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 320.0) internal successors, (2560), 8 states have internal predecessors, (2560), 0 states have call successors, (0), 0 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 11:12:15,571 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 320.0) internal successors, (2560), 8 states have internal predecessors, (2560), 0 states have call successors, (0), 0 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 11:12:15,571 INFO L175 Difference]: Start difference. First operand has 291 places, 320 transitions, 1006 flow. Second operand 7 states and 1735 transitions. [2022-11-16 11:12:15,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 351 transitions, 1319 flow [2022-11-16 11:12:15,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 351 transitions, 1203 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 11:12:15,584 INFO L231 Difference]: Finished difference. Result has 285 places, 308 transitions, 895 flow [2022-11-16 11:12:15,585 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=895, PETRI_PLACES=285, PETRI_TRANSITIONS=308} [2022-11-16 11:12:15,587 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, 3 predicate places. [2022-11-16 11:12:15,588 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 308 transitions, 895 flow [2022-11-16 11:12:15,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 11:12:15,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:15,589 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:15,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:15,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:15,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:12:15,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:15,809 INFO L85 PathProgramCache]: Analyzing trace with hash 335244304, now seen corresponding path program 2 times [2022-11-16 11:12:15,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:15,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877520272] [2022-11-16 11:12:15,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:15,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:16,206 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 11:12:16,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:16,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877520272] [2022-11-16 11:12:16,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877520272] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:16,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455994119] [2022-11-16 11:12:16,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:12:16,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:16,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:16,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:16,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:12:16,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:12:16,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:12:16,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:12:16,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:16,605 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 11:12:16,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:16,809 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 11:12:16,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455994119] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:16,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:12:16,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 11:12:16,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381641667] [2022-11-16 11:12:16,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:16,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:12:16,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:16,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:12:16,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:12:16,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 320 [2022-11-16 11:12:16,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 308 transitions, 895 flow. Second operand has 18 states, 18 states have (on average 213.61111111111111) internal successors, (3845), 18 states have internal predecessors, (3845), 0 states have call successors, (0), 0 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 11:12:16,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:16,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 320 [2022-11-16 11:12:16,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:23,351 INFO L130 PetriNetUnfolder]: 9346/23370 cut-off events. [2022-11-16 11:12:23,352 INFO L131 PetriNetUnfolder]: For 574/574 co-relation queries the response was YES. [2022-11-16 11:12:23,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38159 conditions, 23370 events. 9346/23370 cut-off events. For 574/574 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 242474 event pairs, 6587 based on Foata normal form. 6/12659 useless extension candidates. Maximal degree in co-relation 32148. Up to 1950 conditions per place. [2022-11-16 11:12:23,556 INFO L137 encePairwiseOnDemand]: 290/320 looper letters, 304 selfloop transitions, 97 changer transitions 0/583 dead transitions. [2022-11-16 11:12:23,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 583 transitions, 2384 flow [2022-11-16 11:12:23,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 11:12:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 11:12:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10711 transitions. [2022-11-16 11:12:23,581 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6830994897959184 [2022-11-16 11:12:23,581 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10711 transitions. [2022-11-16 11:12:23,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10711 transitions. [2022-11-16 11:12:23,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:23,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10711 transitions. [2022-11-16 11:12:23,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 218.59183673469389) internal successors, (10711), 49 states have internal predecessors, (10711), 0 states have call successors, (0), 0 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 11:12:23,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 320.0) internal successors, (16000), 50 states have internal predecessors, (16000), 0 states have call successors, (0), 0 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 11:12:23,651 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 320.0) internal successors, (16000), 50 states have internal predecessors, (16000), 0 states have call successors, (0), 0 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 11:12:23,652 INFO L175 Difference]: Start difference. First operand has 285 places, 308 transitions, 895 flow. Second operand 49 states and 10711 transitions. [2022-11-16 11:12:23,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 583 transitions, 2384 flow [2022-11-16 11:12:23,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 583 transitions, 2315 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:12:23,667 INFO L231 Difference]: Finished difference. Result has 329 places, 346 transitions, 1234 flow [2022-11-16 11:12:23,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1234, PETRI_PLACES=329, PETRI_TRANSITIONS=346} [2022-11-16 11:12:23,669 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, 47 predicate places. [2022-11-16 11:12:23,669 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 346 transitions, 1234 flow [2022-11-16 11:12:23,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 213.61111111111111) internal successors, (3845), 18 states have internal predecessors, (3845), 0 states have call successors, (0), 0 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 11:12:23,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:23,673 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:23,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:12:23,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:23,883 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:12:23,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:23,884 INFO L85 PathProgramCache]: Analyzing trace with hash 575276157, now seen corresponding path program 1 times [2022-11-16 11:12:23,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:23,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693096868] [2022-11-16 11:12:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:24,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:24,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693096868] [2022-11-16 11:12:24,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693096868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:24,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129991717] [2022-11-16 11:12:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:24,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:24,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:24,436 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:24,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:12:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:24,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:12:24,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:24,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:25,160 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:25,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129991717] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:25,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:12:25,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-16 11:12:25,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849561836] [2022-11-16 11:12:25,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:25,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:12:25,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:25,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:12:25,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:12:25,178 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 320 [2022-11-16 11:12:25,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 346 transitions, 1234 flow. Second operand has 32 states, 32 states have (on average 234.28125) internal successors, (7497), 32 states have internal predecessors, (7497), 0 states have call successors, (0), 0 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 11:12:25,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:25,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 320 [2022-11-16 11:12:25,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:38,898 INFO L130 PetriNetUnfolder]: 23986/51800 cut-off events. [2022-11-16 11:12:38,898 INFO L131 PetriNetUnfolder]: For 1705/1705 co-relation queries the response was YES. [2022-11-16 11:12:39,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86429 conditions, 51800 events. 23986/51800 cut-off events. For 1705/1705 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 545520 event pairs, 12870 based on Foata normal form. 16/26511 useless extension candidates. Maximal degree in co-relation 85729. Up to 2955 conditions per place. [2022-11-16 11:12:39,561 INFO L137 encePairwiseOnDemand]: 301/320 looper letters, 623 selfloop transitions, 160 changer transitions 0/992 dead transitions. [2022-11-16 11:12:39,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 992 transitions, 4877 flow [2022-11-16 11:12:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 11:12:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 11:12:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10963 transitions. [2022-11-16 11:12:39,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.778622159090909 [2022-11-16 11:12:39,589 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10963 transitions. [2022-11-16 11:12:39,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10963 transitions. [2022-11-16 11:12:39,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:39,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10963 transitions. [2022-11-16 11:12:39,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 249.1590909090909) internal successors, (10963), 44 states have internal predecessors, (10963), 0 states have call successors, (0), 0 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 11:12:39,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 320.0) internal successors, (14400), 45 states have internal predecessors, (14400), 0 states have call successors, (0), 0 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 11:12:39,646 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 320.0) internal successors, (14400), 45 states have internal predecessors, (14400), 0 states have call successors, (0), 0 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 11:12:39,646 INFO L175 Difference]: Start difference. First operand has 329 places, 346 transitions, 1234 flow. Second operand 44 states and 10963 transitions. [2022-11-16 11:12:39,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 992 transitions, 4877 flow [2022-11-16 11:12:39,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 992 transitions, 4623 flow, removed 73 selfloop flow, removed 15 redundant places. [2022-11-16 11:12:39,672 INFO L231 Difference]: Finished difference. Result has 366 places, 439 transitions, 2121 flow [2022-11-16 11:12:39,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2121, PETRI_PLACES=366, PETRI_TRANSITIONS=439} [2022-11-16 11:12:39,675 INFO L288 CegarLoopForPetriNet]: 282 programPoint places, 84 predicate places. [2022-11-16 11:12:39,676 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 439 transitions, 2121 flow [2022-11-16 11:12:39,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 234.28125) internal successors, (7497), 32 states have internal predecessors, (7497), 0 states have call successors, (0), 0 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 11:12:39,678 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:39,679 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] [2022-11-16 11:12:39,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:39,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e41186-b620-4fc6-8941-796da00ae9ff/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:39,887 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2022-11-16 11:12:39,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:39,887 INFO L85 PathProgramCache]: Analyzing trace with hash 760751464, now seen corresponding path program 1 times [2022-11-16 11:12:39,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:39,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503598333] [2022-11-16 11:12:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:39,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:40,111 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 11:12:40,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:40,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503598333] [2022-11-16 11:12:40,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503598333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:40,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:40,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:12:40,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310591185] [2022-11-16 11:12:40,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:40,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:12:40,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:40,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:12:40,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:40,115 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 320 [2022-11-16 11:12:40,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 439 transitions, 2121 flow. Second operand has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 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 11:12:40,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:40,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 320 [2022-11-16 11:12:40,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand