./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 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_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/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_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/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_a4d5be03-f03d-4a88-abf6-6c918c82285c/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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:56:06,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:56:06,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:56:06,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:56:06,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:56:06,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:56:06,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:56:06,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:56:06,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:56:06,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:56:06,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:56:06,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:56:06,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:56:06,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:56:06,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:56:06,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:56:06,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:56:06,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:56:06,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:56:06,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:56:06,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:56:06,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:56:06,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:56:06,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:56:06,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:56:06,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:56:06,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:56:06,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:56:06,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:56:06,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:56:06,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:56:06,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:56:06,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:56:06,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:56:06,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:56:06,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:56:06,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:56:06,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:56:06,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:56:06,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:56:06,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:56:06,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:56:06,282 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:56:06,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:56:06,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:56:06,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:56:06,284 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:56:06,284 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:56:06,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:56:06,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:56:06,285 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:56:06,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:56:06,287 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:56:06,287 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:56:06,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:56:06,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:56:06,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:56:06,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:56:06,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:56:06,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:56:06,288 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:56:06,289 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:56:06,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:56:06,289 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:56:06,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:56:06,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:56:06,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:56:06,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:56:06,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:56:06,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:56:06,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:56:06,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:56:06,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:56:06,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:56:06,293 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:56:06,293 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:56:06,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:56:06,294 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_a4d5be03-f03d-4a88-abf6-6c918c82285c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2022-11-16 11:56:06,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:56:06,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:56:06,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:56:06,721 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:56:06,722 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:56:06,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-16 11:56:06,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/data/28a8c9609/f56f1d4b60f04476b8a2a7263fff492f/FLAG7feec86d9 [2022-11-16 11:56:07,493 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:56:07,494 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-16 11:56:07,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/data/28a8c9609/f56f1d4b60f04476b8a2a7263fff492f/FLAG7feec86d9 [2022-11-16 11:56:07,787 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/data/28a8c9609/f56f1d4b60f04476b8a2a7263fff492f [2022-11-16 11:56:07,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:56:07,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:56:07,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:56:07,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:56:07,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:56:07,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:07" (1/1) ... [2022-11-16 11:56:07,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fcd8b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:07, skipping insertion in model container [2022-11-16 11:56:07,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:07" (1/1) ... [2022-11-16 11:56:07,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:56:07,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:56:08,261 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_a4d5be03-f03d-4a88-abf6-6c918c82285c/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-16 11:56:08,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:56:08,283 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:56:08,368 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_a4d5be03-f03d-4a88-abf6-6c918c82285c/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-16 11:56:08,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:56:08,405 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:56:08,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:08 WrapperNode [2022-11-16 11:56:08,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:56:08,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:56:08,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:56:08,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:56:08,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:08" (1/1) ... [2022-11-16 11:56:08,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:08" (1/1) ... [2022-11-16 11:56:08,520 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 492 [2022-11-16 11:56:08,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:56:08,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:56:08,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:56:08,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:56:08,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:08" (1/1) ... [2022-11-16 11:56:08,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:08" (1/1) ... [2022-11-16 11:56:08,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:08" (1/1) ... [2022-11-16 11:56:08,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:08" (1/1) ... [2022-11-16 11:56:08,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:08" (1/1) ... [2022-11-16 11:56:08,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:08" (1/1) ... [2022-11-16 11:56:08,601 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:08" (1/1) ... [2022-11-16 11:56:08,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:08" (1/1) ... [2022-11-16 11:56:08,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:56:08,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:56:08,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:56:08,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:56:08,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:08" (1/1) ... [2022-11-16 11:56:08,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:56:08,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:08,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:56:08,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:56:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:56:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:56:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:56:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:56:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:56:08,749 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:56:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:56:08,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:56:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:56:08,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:56:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 11:56:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 11:56:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:56:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:56:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:56:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:56:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:56:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:56:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:56:08,755 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 11:56:08,998 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:56:09,001 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:56:10,208 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:56:10,591 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:56:10,592 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-16 11:56:10,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:56:10 BoogieIcfgContainer [2022-11-16 11:56:10,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:56:10,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:56:10,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:56:10,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:56:10,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:56:07" (1/3) ... [2022-11-16 11:56:10,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5b1049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:56:10, skipping insertion in model container [2022-11-16 11:56:10,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:08" (2/3) ... [2022-11-16 11:56:10,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5b1049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:56:10, skipping insertion in model container [2022-11-16 11:56:10,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:56:10" (3/3) ... [2022-11-16 11:56:10,611 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-11-16 11:56:10,627 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:56:10,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:56:10,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-16 11:56:10,642 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:56:10,785 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:56:10,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 371 places, 395 transitions, 822 flow [2022-11-16 11:56:11,032 INFO L130 PetriNetUnfolder]: 37/391 cut-off events. [2022-11-16 11:56:11,033 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:56:11,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 391 events. 37/391 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 401 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 344. Up to 8 conditions per place. [2022-11-16 11:56:11,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 371 places, 395 transitions, 822 flow [2022-11-16 11:56:11,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 368 transitions, 757 flow [2022-11-16 11:56:11,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:56:11,082 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;@1ccb189, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:56:11,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-16 11:56:11,121 INFO L130 PetriNetUnfolder]: 3/83 cut-off events. [2022-11-16 11:56:11,124 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:56:11,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:56:11,126 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:11,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:56:11,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:11,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1508134753, now seen corresponding path program 1 times [2022-11-16 11:56:11,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:11,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481820619] [2022-11-16 11:56:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:11,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:11,828 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 11:56:11,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:11,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481820619] [2022-11-16 11:56:11,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481820619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:11,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:11,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:56:11,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237816916] [2022-11-16 11:56:11,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:11,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:56:11,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:11,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:56:11,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:56:11,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-11-16 11:56:11,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 368 transitions, 757 flow. Second operand has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:11,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:56:11,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-11-16 11:56:11,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:56:14,272 INFO L130 PetriNetUnfolder]: 2793/4191 cut-off events. [2022-11-16 11:56:14,272 INFO L131 PetriNetUnfolder]: For 418/418 co-relation queries the response was YES. [2022-11-16 11:56:14,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8124 conditions, 4191 events. 2793/4191 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18277 event pairs, 1192 based on Foata normal form. 632/3059 useless extension candidates. Maximal degree in co-relation 3423. Up to 1751 conditions per place. [2022-11-16 11:56:14,398 INFO L137 encePairwiseOnDemand]: 340/395 looper letters, 126 selfloop transitions, 19 changer transitions 8/406 dead transitions. [2022-11-16 11:56:14,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 406 transitions, 1144 flow [2022-11-16 11:56:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:56:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:56:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1626 transitions. [2022-11-16 11:56:14,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8232911392405063 [2022-11-16 11:56:14,423 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1626 transitions. [2022-11-16 11:56:14,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1626 transitions. [2022-11-16 11:56:14,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:56:14,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1626 transitions. [2022-11-16 11:56:14,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.2) internal successors, (1626), 5 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:14,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:14,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:14,472 INFO L175 Difference]: Start difference. First operand has 345 places, 368 transitions, 757 flow. Second operand 5 states and 1626 transitions. [2022-11-16 11:56:14,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 406 transitions, 1144 flow [2022-11-16 11:56:14,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 406 transitions, 1118 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 11:56:14,498 INFO L231 Difference]: Finished difference. Result has 333 places, 347 transitions, 813 flow [2022-11-16 11:56:14,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=813, PETRI_PLACES=333, PETRI_TRANSITIONS=347} [2022-11-16 11:56:14,510 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, -12 predicate places. [2022-11-16 11:56:14,511 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 347 transitions, 813 flow [2022-11-16 11:56:14,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:14,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:56:14,513 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:14,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:56:14,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:56:14,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1522823677, now seen corresponding path program 1 times [2022-11-16 11:56:14,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:14,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131847095] [2022-11-16 11:56:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:14,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:14,811 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 11:56:14,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:14,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131847095] [2022-11-16 11:56:14,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131847095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:56:14,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808748593] [2022-11-16 11:56:14,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:14,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:14,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:14,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:14,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:56:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:15,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:56:15,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:15,144 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 11:56:15,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:56:15,245 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 11:56:15,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808748593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:56:15,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:56:15,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:56:15,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239175318] [2022-11-16 11:56:15,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:56:15,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:56:15,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:15,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:56:15,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:56:15,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-11-16 11:56:15,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 347 transitions, 813 flow. Second operand has 12 states, 12 states have (on average 287.6666666666667) internal successors, (3452), 12 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:15,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:56:15,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-11-16 11:56:15,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:56:20,180 INFO L130 PetriNetUnfolder]: 6981/10275 cut-off events. [2022-11-16 11:56:20,181 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2022-11-16 11:56:20,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19857 conditions, 10275 events. 6981/10275 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 51122 event pairs, 2980 based on Foata normal form. 12/5917 useless extension candidates. Maximal degree in co-relation 15272. Up to 1740 conditions per place. [2022-11-16 11:56:20,387 INFO L137 encePairwiseOnDemand]: 364/395 looper letters, 267 selfloop transitions, 84 changer transitions 0/604 dead transitions. [2022-11-16 11:56:20,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 604 transitions, 2167 flow [2022-11-16 11:56:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:56:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:56:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5493 transitions. [2022-11-16 11:56:20,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7725738396624473 [2022-11-16 11:56:20,407 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5493 transitions. [2022-11-16 11:56:20,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5493 transitions. [2022-11-16 11:56:20,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:56:20,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5493 transitions. [2022-11-16 11:56:20,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 305.1666666666667) internal successors, (5493), 18 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:20,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 395.0) internal successors, (7505), 19 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:20,460 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 395.0) internal successors, (7505), 19 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:20,461 INFO L175 Difference]: Start difference. First operand has 333 places, 347 transitions, 813 flow. Second operand 18 states and 5493 transitions. [2022-11-16 11:56:20,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 604 transitions, 2167 flow [2022-11-16 11:56:20,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 604 transitions, 2156 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:56:20,488 INFO L231 Difference]: Finished difference. Result has 345 places, 404 transitions, 1304 flow [2022-11-16 11:56:20,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1304, PETRI_PLACES=345, PETRI_TRANSITIONS=404} [2022-11-16 11:56:20,490 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 0 predicate places. [2022-11-16 11:56:20,490 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 404 transitions, 1304 flow [2022-11-16 11:56:20,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 287.6666666666667) internal successors, (3452), 12 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:20,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:56:20,495 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:20,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:56:20,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:20,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:56:20,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:20,712 INFO L85 PathProgramCache]: Analyzing trace with hash 37107475, now seen corresponding path program 1 times [2022-11-16 11:56:20,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:20,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182709991] [2022-11-16 11:56:20,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:20,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:20,977 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 11:56:20,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:20,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182709991] [2022-11-16 11:56:20,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182709991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:56:20,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729768700] [2022-11-16 11:56:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:20,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:20,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:20,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:21,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:56:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:21,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:56:21,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:21,261 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 11:56:21,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:56:21,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729768700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:21,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:56:21,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:56:21,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226695289] [2022-11-16 11:56:21,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:21,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:56:21,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:21,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:56:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:56:21,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-11-16 11:56:21,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 404 transitions, 1304 flow. Second operand has 6 states, 6 states have (on average 287.3333333333333) internal successors, (1724), 6 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:21,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:56:21,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-11-16 11:56:21,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:56:25,166 INFO L130 PetriNetUnfolder]: 6981/10259 cut-off events. [2022-11-16 11:56:25,167 INFO L131 PetriNetUnfolder]: For 464/464 co-relation queries the response was YES. [2022-11-16 11:56:25,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19932 conditions, 10259 events. 6981/10259 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 50977 event pairs, 2980 based on Foata normal form. 16/5905 useless extension candidates. Maximal degree in co-relation 15888. Up to 6860 conditions per place. [2022-11-16 11:56:25,371 INFO L137 encePairwiseOnDemand]: 372/395 looper letters, 127 selfloop transitions, 59 changer transitions 0/439 dead transitions. [2022-11-16 11:56:25,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 439 transitions, 1686 flow [2022-11-16 11:56:25,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:56:25,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:56:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2140 transitions. [2022-11-16 11:56:25,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7739602169981917 [2022-11-16 11:56:25,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2140 transitions. [2022-11-16 11:56:25,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2140 transitions. [2022-11-16 11:56:25,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:56:25,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2140 transitions. [2022-11-16 11:56:25,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 305.7142857142857) internal successors, (2140), 7 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:25,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:25,398 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:25,399 INFO L175 Difference]: Start difference. First operand has 345 places, 404 transitions, 1304 flow. Second operand 7 states and 2140 transitions. [2022-11-16 11:56:25,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 439 transitions, 1686 flow [2022-11-16 11:56:25,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 439 transitions, 1528 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-11-16 11:56:25,429 INFO L231 Difference]: Finished difference. Result has 338 places, 388 transitions, 1156 flow [2022-11-16 11:56:25,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1156, PETRI_PLACES=338, PETRI_TRANSITIONS=388} [2022-11-16 11:56:25,433 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, -7 predicate places. [2022-11-16 11:56:25,433 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 388 transitions, 1156 flow [2022-11-16 11:56:25,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 287.3333333333333) internal successors, (1724), 6 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:25,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:56:25,435 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:25,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:56:25,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:25,653 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:56:25,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:25,654 INFO L85 PathProgramCache]: Analyzing trace with hash 319941601, now seen corresponding path program 2 times [2022-11-16 11:56:25,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:25,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870695685] [2022-11-16 11:56:25,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:25,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,140 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 11:56:26,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:26,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870695685] [2022-11-16 11:56:26,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870695685] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:56:26,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017044323] [2022-11-16 11:56:26,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:56:26,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:26,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:26,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:26,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:56:26,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:56:26,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:56:26,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:56:26,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:26,590 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 11:56:26,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:56:26,850 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 11:56:26,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017044323] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:56:26,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:56:26,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 11:56:26,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904275168] [2022-11-16 11:56:26,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:56:26,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:56:26,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:26,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:56:26,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:56:26,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 395 [2022-11-16 11:56:26,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 388 transitions, 1156 flow. Second operand has 18 states, 18 states have (on average 263.6111111111111) internal successors, (4745), 18 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:26,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:56:26,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 395 [2022-11-16 11:56:26,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:56:30,515 INFO L130 PetriNetUnfolder]: 2584/4759 cut-off events. [2022-11-16 11:56:30,515 INFO L131 PetriNetUnfolder]: For 420/420 co-relation queries the response was YES. [2022-11-16 11:56:30,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8653 conditions, 4759 events. 2584/4759 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 21376 event pairs, 693 based on Foata normal form. 8/3535 useless extension candidates. Maximal degree in co-relation 6474. Up to 644 conditions per place. [2022-11-16 11:56:30,568 INFO L137 encePairwiseOnDemand]: 353/395 looper letters, 333 selfloop transitions, 129 changer transitions 0/690 dead transitions. [2022-11-16 11:56:30,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 690 transitions, 2875 flow [2022-11-16 11:56:30,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 11:56:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 11:56:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 13252 transitions. [2022-11-16 11:56:30,599 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6846809609919917 [2022-11-16 11:56:30,599 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 13252 transitions. [2022-11-16 11:56:30,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 13252 transitions. [2022-11-16 11:56:30,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:56:30,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 13252 transitions. [2022-11-16 11:56:30,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 270.44897959183675) internal successors, (13252), 49 states have internal predecessors, (13252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:30,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 395.0) internal successors, (19750), 50 states have internal predecessors, (19750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:30,705 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 395.0) internal successors, (19750), 50 states have internal predecessors, (19750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:30,705 INFO L175 Difference]: Start difference. First operand has 338 places, 388 transitions, 1156 flow. Second operand 49 states and 13252 transitions. [2022-11-16 11:56:30,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 690 transitions, 2875 flow [2022-11-16 11:56:30,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 690 transitions, 2780 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:56:30,724 INFO L231 Difference]: Finished difference. Result has 378 places, 437 transitions, 1615 flow [2022-11-16 11:56:30,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1615, PETRI_PLACES=378, PETRI_TRANSITIONS=437} [2022-11-16 11:56:30,727 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 33 predicate places. [2022-11-16 11:56:30,727 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 437 transitions, 1615 flow [2022-11-16 11:56:30,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 263.6111111111111) internal successors, (4745), 18 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:30,729 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:56:30,730 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:30,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:56:30,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:30,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:56:30,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:30,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1450344230, now seen corresponding path program 1 times [2022-11-16 11:56:30,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:30,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110336544] [2022-11-16 11:56:30,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:30,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:31,674 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 11:56:31,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:31,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110336544] [2022-11-16 11:56:31,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110336544] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:56:31,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448763282] [2022-11-16 11:56:31,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:31,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:31,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:31,677 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:31,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:56:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:31,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:56:31,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:32,055 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 11:56:32,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:56:32,465 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 11:56:32,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448763282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:56:32,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:56:32,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-16 11:56:32,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250461057] [2022-11-16 11:56:32,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:56:32,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:56:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:32,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:56:32,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:56:32,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-11-16 11:56:32,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 437 transitions, 1615 flow. Second operand has 32 states, 32 states have (on average 288.28125) internal successors, (9225), 32 states have internal predecessors, (9225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:32,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:56:32,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-11-16 11:56:32,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:56:37,975 INFO L130 PetriNetUnfolder]: 5536/10078 cut-off events. [2022-11-16 11:56:37,975 INFO L131 PetriNetUnfolder]: For 1581/1581 co-relation queries the response was YES. [2022-11-16 11:56:38,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18607 conditions, 10078 events. 5536/10078 cut-off events. For 1581/1581 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 51436 event pairs, 1485 based on Foata normal form. 24/7522 useless extension candidates. Maximal degree in co-relation 17803. Up to 1380 conditions per place. [2022-11-16 11:56:38,093 INFO L137 encePairwiseOnDemand]: 369/395 looper letters, 686 selfloop transitions, 218 changer transitions 0/1163 dead transitions. [2022-11-16 11:56:38,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1163 transitions, 5931 flow [2022-11-16 11:56:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 11:56:38,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 11:56:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 13468 transitions. [2022-11-16 11:56:38,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7749136939010357 [2022-11-16 11:56:38,123 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 13468 transitions. [2022-11-16 11:56:38,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 13468 transitions. [2022-11-16 11:56:38,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:56:38,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 13468 transitions. [2022-11-16 11:56:38,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 306.09090909090907) internal successors, (13468), 44 states have internal predecessors, (13468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:38,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 395.0) internal successors, (17775), 45 states have internal predecessors, (17775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:38,206 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 395.0) internal successors, (17775), 45 states have internal predecessors, (17775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:38,207 INFO L175 Difference]: Start difference. First operand has 378 places, 437 transitions, 1615 flow. Second operand 44 states and 13468 transitions. [2022-11-16 11:56:38,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1163 transitions, 5931 flow [2022-11-16 11:56:38,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 1163 transitions, 5589 flow, removed 104 selfloop flow, removed 15 redundant places. [2022-11-16 11:56:38,238 INFO L231 Difference]: Finished difference. Result has 415 places, 563 transitions, 2827 flow [2022-11-16 11:56:38,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2827, PETRI_PLACES=415, PETRI_TRANSITIONS=563} [2022-11-16 11:56:38,241 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 70 predicate places. [2022-11-16 11:56:38,241 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 563 transitions, 2827 flow [2022-11-16 11:56:38,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 288.28125) internal successors, (9225), 32 states have internal predecessors, (9225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:38,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:56:38,244 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:38,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:56:38,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d5be03-f03d-4a88-abf6-6c918c82285c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:38,451 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:56:38,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:38,452 INFO L85 PathProgramCache]: Analyzing trace with hash 312017211, now seen corresponding path program 1 times [2022-11-16 11:56:38,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:38,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866949573] [2022-11-16 11:56:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:38,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:38,602 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 11:56:38,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:38,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866949573] [2022-11-16 11:56:38,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866949573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:38,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:38,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:56:38,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575072839] [2022-11-16 11:56:38,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:38,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:56:38,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:38,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:56:38,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:56:38,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 395 [2022-11-16 11:56:38,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 563 transitions, 2827 flow. Second operand has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:38,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:56:38,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 395 [2022-11-16 11:56:38,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:56:46,634 INFO L130 PetriNetUnfolder]: 16996/25273 cut-off events. [2022-11-16 11:56:46,634 INFO L131 PetriNetUnfolder]: For 1677/1692 co-relation queries the response was YES. [2022-11-16 11:56:46,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49764 conditions, 25273 events. 16996/25273 cut-off events. For 1677/1692 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 129018 event pairs, 5850 based on Foata normal form. 0/16708 useless extension candidates. Maximal degree in co-relation 49055. Up to 17431 conditions per place. [2022-11-16 11:56:47,014 INFO L137 encePairwiseOnDemand]: 390/395 looper letters, 50 selfloop transitions, 4 changer transitions 0/579 dead transitions. [2022-11-16 11:56:47,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 579 transitions, 2974 flow [2022-11-16 11:56:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:56:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:56:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1015 transitions. [2022-11-16 11:56:47,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8565400843881856 [2022-11-16 11:56:47,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1015 transitions. [2022-11-16 11:56:47,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1015 transitions. [2022-11-16 11:56:47,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:56:47,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1015 transitions. [2022-11-16 11:56:47,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:47,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:47,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:47,028 INFO L175 Difference]: Start difference. First operand has 415 places, 563 transitions, 2827 flow. Second operand 3 states and 1015 transitions. [2022-11-16 11:56:47,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 579 transitions, 2974 flow [2022-11-16 11:56:47,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 579 transitions, 2837 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-16 11:56:47,072 INFO L231 Difference]: Finished difference. Result has 404 places, 564 transitions, 2712 flow [2022-11-16 11:56:47,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2712, PETRI_PLACES=404, PETRI_TRANSITIONS=564} [2022-11-16 11:56:47,078 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 59 predicate places. [2022-11-16 11:56:47,078 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 564 transitions, 2712 flow [2022-11-16 11:56:47,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:47,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:56:47,080 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:47,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:56:47,081 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:56:47,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:47,082 INFO L85 PathProgramCache]: Analyzing trace with hash -84956492, now seen corresponding path program 1 times [2022-11-16 11:56:47,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:47,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390895993] [2022-11-16 11:56:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:47,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:56:47,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:47,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390895993] [2022-11-16 11:56:47,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390895993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:47,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:47,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:56:47,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568801746] [2022-11-16 11:56:47,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:47,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:56:47,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:47,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:56:47,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:56:47,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 395 [2022-11-16 11:56:47,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 564 transitions, 2712 flow. Second operand has 6 states, 6 states have (on average 289.1666666666667) internal successors, (1735), 6 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:47,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:56:47,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 395 [2022-11-16 11:56:47,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:56:53,968 INFO L130 PetriNetUnfolder]: 10336/20385 cut-off events. [2022-11-16 11:56:53,969 INFO L131 PetriNetUnfolder]: For 5653/5998 co-relation queries the response was YES. [2022-11-16 11:56:54,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38181 conditions, 20385 events. 10336/20385 cut-off events. For 5653/5998 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 136136 event pairs, 2805 based on Foata normal form. 660/15750 useless extension candidates. Maximal degree in co-relation 37375. Up to 8660 conditions per place. [2022-11-16 11:56:54,214 INFO L137 encePairwiseOnDemand]: 382/395 looper letters, 298 selfloop transitions, 24 changer transitions 0/632 dead transitions. [2022-11-16 11:56:54,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 632 transitions, 3676 flow [2022-11-16 11:56:54,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:56:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:56:54,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2664 transitions. [2022-11-16 11:56:54,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7493670886075949 [2022-11-16 11:56:54,220 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2664 transitions. [2022-11-16 11:56:54,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2664 transitions. [2022-11-16 11:56:54,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:56:54,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2664 transitions. [2022-11-16 11:56:54,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 296.0) internal successors, (2664), 9 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:54,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:54,236 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:54,237 INFO L175 Difference]: Start difference. First operand has 404 places, 564 transitions, 2712 flow. Second operand 9 states and 2664 transitions. [2022-11-16 11:56:54,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 632 transitions, 3676 flow [2022-11-16 11:56:54,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 632 transitions, 3664 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:56:54,279 INFO L231 Difference]: Finished difference. Result has 411 places, 565 transitions, 2765 flow [2022-11-16 11:56:54,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2765, PETRI_PLACES=411, PETRI_TRANSITIONS=565} [2022-11-16 11:56:54,281 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 66 predicate places. [2022-11-16 11:56:54,281 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 565 transitions, 2765 flow [2022-11-16 11:56:54,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 289.1666666666667) internal successors, (1735), 6 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:54,282 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:56:54,283 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:54,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:56:54,283 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:56:54,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:54,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1661318619, now seen corresponding path program 1 times [2022-11-16 11:56:54,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:54,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212205322] [2022-11-16 11:56:54,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:54,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:54,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:56:54,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:54,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212205322] [2022-11-16 11:56:54,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212205322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:54,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:54,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:56:54,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385343882] [2022-11-16 11:56:54,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:54,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:56:54,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:54,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:56:54,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:56:54,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 395 [2022-11-16 11:56:54,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 565 transitions, 2765 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:54,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:56:54,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 395 [2022-11-16 11:56:54,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:05,178 INFO L130 PetriNetUnfolder]: 22231/35460 cut-off events. [2022-11-16 11:57:05,178 INFO L131 PetriNetUnfolder]: For 5281/5311 co-relation queries the response was YES. [2022-11-16 11:57:05,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74114 conditions, 35460 events. 22231/35460 cut-off events. For 5281/5311 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 222389 event pairs, 5640 based on Foata normal form. 0/26535 useless extension candidates. Maximal degree in co-relation 73416. Up to 19952 conditions per place. [2022-11-16 11:57:05,640 INFO L137 encePairwiseOnDemand]: 390/395 looper letters, 53 selfloop transitions, 3 changer transitions 0/582 dead transitions. [2022-11-16 11:57:05,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 582 transitions, 2924 flow [2022-11-16 11:57:05,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:57:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:57:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1017 transitions. [2022-11-16 11:57:05,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8582278481012658 [2022-11-16 11:57:05,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1017 transitions. [2022-11-16 11:57:05,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1017 transitions. [2022-11-16 11:57:05,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:05,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1017 transitions. [2022-11-16 11:57:05,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:05,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:05,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:05,650 INFO L175 Difference]: Start difference. First operand has 411 places, 565 transitions, 2765 flow. Second operand 3 states and 1017 transitions. [2022-11-16 11:57:05,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 582 transitions, 2924 flow [2022-11-16 11:57:05,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 582 transitions, 2902 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:05,693 INFO L231 Difference]: Finished difference. Result has 412 places, 566 transitions, 2763 flow [2022-11-16 11:57:05,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2763, PETRI_PLACES=412, PETRI_TRANSITIONS=566} [2022-11-16 11:57:05,695 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 67 predicate places. [2022-11-16 11:57:05,695 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 566 transitions, 2763 flow [2022-11-16 11:57:05,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:05,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:05,696 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:05,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:57:05,697 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-16 11:57:05,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:05,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1403370878, now seen corresponding path program 1 times [2022-11-16 11:57:05,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:05,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525492353] [2022-11-16 11:57:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:05,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:06,034 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 11:57:06,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:06,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525492353] [2022-11-16 11:57:06,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525492353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:06,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:06,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:57:06,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657068857] [2022-11-16 11:57:06,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:06,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:57:06,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:06,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:57:06,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:57:06,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 395 [2022-11-16 11:57:06,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 566 transitions, 2763 flow. Second operand has 4 states, 4 states have (on average 328.75) internal successors, (1315), 4 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:06,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:06,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 395 [2022-11-16 11:57:06,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand