./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN --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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- 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-6b4ec56 [2022-11-20 11:10:43,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:10:43,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:10:43,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:10:43,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:10:43,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:10:43,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:10:43,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:10:43,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:10:43,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:10:43,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:10:43,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:10:43,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:10:43,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:10:43,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:10:43,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:10:43,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:10:43,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:10:43,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:10:43,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:10:43,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:10:43,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:10:43,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:10:43,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:10:43,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:10:43,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:10:43,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:10:43,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:10:43,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:10:43,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:10:43,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:10:43,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:10:43,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:10:43,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:10:43,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:10:43,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:10:43,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:10:43,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:10:43,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:10:43,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:10:43,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:10:43,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:10:43,435 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:10:43,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:10:43,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:10:43,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:10:43,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:10:43,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:10:43,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:10:43,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:10:43,439 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:10:43,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:10:43,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:10:43,441 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:10:43,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:10:43,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:10:43,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:10:43,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:10:43,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:10:43,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:10:43,443 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:10:43,444 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:10:43,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:10:43,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:10:43,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:10:43,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:10:43,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:10:43,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:10:43,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:10:43,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:10:43,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:10:43,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:10:43,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:10:43,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:10:43,448 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:10:43,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:10:43,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:10:43,449 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_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2022-11-20 11:10:43,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:10:43,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:10:43,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:10:43,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:10:43,863 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:10:43,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-11-20 11:10:47,401 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:10:47,869 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:10:47,869 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-11-20 11:10:47,892 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/data/84b1d0483/0d8249aea4f44c7a9339f377f54c8ce7/FLAGb8d04091e [2022-11-20 11:10:47,911 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/data/84b1d0483/0d8249aea4f44c7a9339f377f54c8ce7 [2022-11-20 11:10:47,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:10:47,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:10:47,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:10:47,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:10:47,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:10:47,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:10:47" (1/1) ... [2022-11-20 11:10:47,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9e9b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:47, skipping insertion in model container [2022-11-20 11:10:47,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:10:47" (1/1) ... [2022-11-20 11:10:47,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:10:48,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:10:48,667 WARN L237 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_90bdf34c-5684-4849-8858-9b65b7955982/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-11-20 11:10:48,680 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:10:48,681 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:10:48,681 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:10:48,682 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:10:48,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:10:48,740 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:10:48,814 WARN L237 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_90bdf34c-5684-4849-8858-9b65b7955982/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-11-20 11:10:48,819 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:10:48,820 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:10:48,820 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:10:48,821 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 11:10:48,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:10:48,922 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:10:48,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:48 WrapperNode [2022-11-20 11:10:48,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:10:48,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:10:48,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:10:48,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:10:48,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:48" (1/1) ... [2022-11-20 11:10:48,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:48" (1/1) ... [2022-11-20 11:10:48,998 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 328 [2022-11-20 11:10:48,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:10:49,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:10:49,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:10:49,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:10:49,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:48" (1/1) ... [2022-11-20 11:10:49,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:48" (1/1) ... [2022-11-20 11:10:49,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:48" (1/1) ... [2022-11-20 11:10:49,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:48" (1/1) ... [2022-11-20 11:10:49,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:48" (1/1) ... [2022-11-20 11:10:49,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:48" (1/1) ... [2022-11-20 11:10:49,058 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:48" (1/1) ... [2022-11-20 11:10:49,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:48" (1/1) ... [2022-11-20 11:10:49,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:10:49,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:10:49,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:10:49,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:10:49,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:48" (1/1) ... [2022-11-20 11:10:49,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:10:49,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:49,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:10:49,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:10:49,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:10:49,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:10:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-20 11:10:49,179 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-20 11:10:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:10:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:10:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-20 11:10:49,180 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-20 11:10:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:10:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:10:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:10:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:10:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:10:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:10:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:10:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:10:49,184 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:10:49,472 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:10:49,474 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:10:50,179 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:10:50,191 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:10:50,191 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2022-11-20 11:10:50,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:10:50 BoogieIcfgContainer [2022-11-20 11:10:50,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:10:50,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:10:50,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:10:50,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:10:50,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:10:47" (1/3) ... [2022-11-20 11:10:50,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471f25c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:10:50, skipping insertion in model container [2022-11-20 11:10:50,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:48" (2/3) ... [2022-11-20 11:10:50,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471f25c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:10:50, skipping insertion in model container [2022-11-20 11:10:50,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:10:50" (3/3) ... [2022-11-20 11:10:50,207 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2022-11-20 11:10:50,217 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:10:50,226 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:10:50,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-20 11:10:50,226 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:10:50,350 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 11:10:50,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 372 transitions, 766 flow [2022-11-20 11:10:50,673 INFO L130 PetriNetUnfolder]: 77/603 cut-off events. [2022-11-20 11:10:50,673 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-11-20 11:10:50,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 603 events. 77/603 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3080 event pairs, 0 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2022-11-20 11:10:50,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 372 transitions, 766 flow [2022-11-20 11:10:50,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 372 transitions, 766 flow [2022-11-20 11:10:50,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:10:50,723 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;@530dc7fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:10:50,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-11-20 11:10:50,737 INFO L130 PetriNetUnfolder]: 6/75 cut-off events. [2022-11-20 11:10:50,737 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:10:50,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:50,738 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] [2022-11-20 11:10:50,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:10:50,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:50,746 INFO L85 PathProgramCache]: Analyzing trace with hash -346715749, now seen corresponding path program 1 times [2022-11-20 11:10:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:50,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087301007] [2022-11-20 11:10:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:50,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:50,936 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:50,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341962643] [2022-11-20 11:10:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:50,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:50,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:50,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:50,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:10:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:51,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:10:51,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:51,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:51,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:51,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087301007] [2022-11-20 11:10:51,219 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:51,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341962643] [2022-11-20 11:10:51,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341962643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:51,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:51,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:10:51,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721175551] [2022-11-20 11:10:51,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:51,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:51,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:51,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:51,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:51,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 372 [2022-11-20 11:10:51,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 372 transitions, 766 flow. Second operand has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 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) [2022-11-20 11:10:51,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:51,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 372 [2022-11-20 11:10:51,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:51,609 INFO L130 PetriNetUnfolder]: 20/602 cut-off events. [2022-11-20 11:10:51,609 INFO L131 PetriNetUnfolder]: For 37/47 co-relation queries the response was YES. [2022-11-20 11:10:51,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 602 events. 20/602 cut-off events. For 37/47 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3057 event pairs, 0 based on Foata normal form. 98/618 useless extension candidates. Maximal degree in co-relation 353. Up to 26 conditions per place. [2022-11-20 11:10:51,621 INFO L137 encePairwiseOnDemand]: 333/372 looper letters, 27 selfloop transitions, 2 changer transitions 0/345 dead transitions. [2022-11-20 11:10:51,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 345 transitions, 770 flow [2022-11-20 11:10:51,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:51,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:10:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2022-11-20 11:10:51,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.910394265232975 [2022-11-20 11:10:51,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2022-11-20 11:10:51,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2022-11-20 11:10:51,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:51,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2022-11-20 11:10:51,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 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) [2022-11-20 11:10:51,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2022-11-20 11:10:51,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2022-11-20 11:10:51,688 INFO L175 Difference]: Start difference. First operand has 331 places, 372 transitions, 766 flow. Second operand 3 states and 1016 transitions. [2022-11-20 11:10:51,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 345 transitions, 770 flow [2022-11-20 11:10:51,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 345 transitions, 770 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:10:51,713 INFO L231 Difference]: Finished difference. Result has 332 places, 337 transitions, 710 flow [2022-11-20 11:10:51,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=710, PETRI_PLACES=332, PETRI_TRANSITIONS=337} [2022-11-20 11:10:51,724 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 1 predicate places. [2022-11-20 11:10:51,724 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 337 transitions, 710 flow [2022-11-20 11:10:51,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 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) [2022-11-20 11:10:51,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:51,727 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] [2022-11-20 11:10:51,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:51,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 11:10:51,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:10:51,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:51,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2136712379, now seen corresponding path program 1 times [2022-11-20 11:10:51,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:51,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373365384] [2022-11-20 11:10:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:51,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:52,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:52,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373365384] [2022-11-20 11:10:52,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373365384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:52,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:52,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:10:52,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053865145] [2022-11-20 11:10:52,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:52,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:52,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:52,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:52,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:52,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 372 [2022-11-20 11:10:52,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 337 transitions, 710 flow. Second operand has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 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) [2022-11-20 11:10:52,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:52,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 372 [2022-11-20 11:10:52,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:52,505 INFO L130 PetriNetUnfolder]: 20/686 cut-off events. [2022-11-20 11:10:52,505 INFO L131 PetriNetUnfolder]: For 38/48 co-relation queries the response was YES. [2022-11-20 11:10:52,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 686 events. 20/686 cut-off events. For 38/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3165 event pairs, 0 based on Foata normal form. 2/605 useless extension candidates. Maximal degree in co-relation 606. Up to 31 conditions per place. [2022-11-20 11:10:52,515 INFO L137 encePairwiseOnDemand]: 367/372 looper letters, 21 selfloop transitions, 2 changer transitions 0/343 dead transitions. [2022-11-20 11:10:52,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 343 transitions, 768 flow [2022-11-20 11:10:52,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:52,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:10:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2022-11-20 11:10:52,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8808243727598566 [2022-11-20 11:10:52,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2022-11-20 11:10:52,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2022-11-20 11:10:52,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:52,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2022-11-20 11:10:52,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2022-11-20 11:10:52,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2022-11-20 11:10:52,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2022-11-20 11:10:52,532 INFO L175 Difference]: Start difference. First operand has 332 places, 337 transitions, 710 flow. Second operand 3 states and 983 transitions. [2022-11-20 11:10:52,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 343 transitions, 768 flow [2022-11-20 11:10:52,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 343 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:10:52,548 INFO L231 Difference]: Finished difference. Result has 334 places, 338 transitions, 724 flow [2022-11-20 11:10:52,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=724, PETRI_PLACES=334, PETRI_TRANSITIONS=338} [2022-11-20 11:10:52,551 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 3 predicate places. [2022-11-20 11:10:52,552 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 338 transitions, 724 flow [2022-11-20 11:10:52,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 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) [2022-11-20 11:10:52,553 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:52,554 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] [2022-11-20 11:10:52,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:10:52,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:10:52,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:52,568 INFO L85 PathProgramCache]: Analyzing trace with hash -767640976, now seen corresponding path program 1 times [2022-11-20 11:10:52,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:52,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377778848] [2022-11-20 11:10:52,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:52,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:52,650 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:52,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729858826] [2022-11-20 11:10:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:52,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:52,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:52,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:52,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:10:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:52,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:10:52,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:53,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:53,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:53,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377778848] [2022-11-20 11:10:53,031 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:53,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729858826] [2022-11-20 11:10:53,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729858826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:53,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:53,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:10:53,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588493016] [2022-11-20 11:10:53,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:53,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:10:53,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:53,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:10:53,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:10:53,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-20 11:10:53,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 338 transitions, 724 flow. Second operand has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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) [2022-11-20 11:10:53,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:53,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-20 11:10:53,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:53,291 INFO L130 PetriNetUnfolder]: 20/686 cut-off events. [2022-11-20 11:10:53,291 INFO L131 PetriNetUnfolder]: For 45/55 co-relation queries the response was YES. [2022-11-20 11:10:53,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 686 events. 20/686 cut-off events. For 45/55 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3167 event pairs, 0 based on Foata normal form. 0/607 useless extension candidates. Maximal degree in co-relation 559. Up to 39 conditions per place. [2022-11-20 11:10:53,303 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 27 selfloop transitions, 5 changer transitions 0/347 dead transitions. [2022-11-20 11:10:53,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 347 transitions, 806 flow [2022-11-20 11:10:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:10:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:10:53,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1603 transitions. [2022-11-20 11:10:53,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8618279569892473 [2022-11-20 11:10:53,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1603 transitions. [2022-11-20 11:10:53,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1603 transitions. [2022-11-20 11:10:53,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:53,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1603 transitions. [2022-11-20 11:10:53,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.6) internal successors, (1603), 5 states have internal predecessors, (1603), 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) [2022-11-20 11:10:53,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 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) [2022-11-20 11:10:53,321 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 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) [2022-11-20 11:10:53,321 INFO L175 Difference]: Start difference. First operand has 334 places, 338 transitions, 724 flow. Second operand 5 states and 1603 transitions. [2022-11-20 11:10:53,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 347 transitions, 806 flow [2022-11-20 11:10:53,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 347 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:10:53,332 INFO L231 Difference]: Finished difference. Result has 341 places, 341 transitions, 756 flow [2022-11-20 11:10:53,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=756, PETRI_PLACES=341, PETRI_TRANSITIONS=341} [2022-11-20 11:10:53,333 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 10 predicate places. [2022-11-20 11:10:53,334 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 341 transitions, 756 flow [2022-11-20 11:10:53,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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) [2022-11-20 11:10:53,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:53,335 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] [2022-11-20 11:10:53,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:53,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:53,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:10:53,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:53,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1972934343, now seen corresponding path program 1 times [2022-11-20 11:10:53,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:53,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69886566] [2022-11-20 11:10:53,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:53,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:53,593 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:53,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803632282] [2022-11-20 11:10:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:53,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:53,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:53,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:53,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:10:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:53,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:10:53,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:53,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:53,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:53,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69886566] [2022-11-20 11:10:53,913 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:53,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803632282] [2022-11-20 11:10:53,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803632282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:53,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:53,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:10:53,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738493225] [2022-11-20 11:10:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:53,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:10:53,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:53,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:10:53,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:10:53,918 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-20 11:10:53,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 341 transitions, 756 flow. Second operand has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 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) [2022-11-20 11:10:53,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:53,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-20 11:10:53,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:54,160 INFO L130 PetriNetUnfolder]: 20/682 cut-off events. [2022-11-20 11:10:54,160 INFO L131 PetriNetUnfolder]: For 67/77 co-relation queries the response was YES. [2022-11-20 11:10:54,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 682 events. 20/682 cut-off events. For 67/77 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3154 event pairs, 0 based on Foata normal form. 4/613 useless extension candidates. Maximal degree in co-relation 608. Up to 37 conditions per place. [2022-11-20 11:10:54,170 INFO L137 encePairwiseOnDemand]: 368/372 looper letters, 20 selfloop transitions, 5 changer transitions 0/340 dead transitions. [2022-11-20 11:10:54,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 340 transitions, 804 flow [2022-11-20 11:10:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:10:54,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:10:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1279 transitions. [2022-11-20 11:10:54,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595430107526881 [2022-11-20 11:10:54,175 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1279 transitions. [2022-11-20 11:10:54,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1279 transitions. [2022-11-20 11:10:54,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:54,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1279 transitions. [2022-11-20 11:10:54,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 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) [2022-11-20 11:10:54,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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) [2022-11-20 11:10:54,185 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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) [2022-11-20 11:10:54,185 INFO L175 Difference]: Start difference. First operand has 341 places, 341 transitions, 756 flow. Second operand 4 states and 1279 transitions. [2022-11-20 11:10:54,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 340 transitions, 804 flow [2022-11-20 11:10:54,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 340 transitions, 795 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:10:54,194 INFO L231 Difference]: Finished difference. Result has 341 places, 340 transitions, 758 flow [2022-11-20 11:10:54,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=758, PETRI_PLACES=341, PETRI_TRANSITIONS=340} [2022-11-20 11:10:54,196 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 10 predicate places. [2022-11-20 11:10:54,196 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 340 transitions, 758 flow [2022-11-20 11:10:54,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 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) [2022-11-20 11:10:54,198 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:54,198 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:54,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:54,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:54,405 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:10:54,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:54,405 INFO L85 PathProgramCache]: Analyzing trace with hash -940870042, now seen corresponding path program 1 times [2022-11-20 11:10:54,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:54,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113570432] [2022-11-20 11:10:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:54,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:54,446 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:54,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545779264] [2022-11-20 11:10:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:54,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:54,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:54,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:54,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:10:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:54,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:10:54,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:54,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:54,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:54,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113570432] [2022-11-20 11:10:54,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:54,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545779264] [2022-11-20 11:10:54,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545779264] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:54,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:54,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:10:54,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305238707] [2022-11-20 11:10:54,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:54,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:10:54,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:54,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:10:54,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:54,906 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-20 11:10:54,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 340 transitions, 758 flow. Second operand has 8 states, 8 states have (on average 316.875) internal successors, (2535), 8 states have internal predecessors, (2535), 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) [2022-11-20 11:10:54,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:54,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-20 11:10:54,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:55,258 INFO L130 PetriNetUnfolder]: 20/768 cut-off events. [2022-11-20 11:10:55,258 INFO L131 PetriNetUnfolder]: For 83/93 co-relation queries the response was YES. [2022-11-20 11:10:55,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 768 events. 20/768 cut-off events. For 83/93 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2833 event pairs, 0 based on Foata normal form. 6/701 useless extension candidates. Maximal degree in co-relation 675. Up to 22 conditions per place. [2022-11-20 11:10:55,269 INFO L137 encePairwiseOnDemand]: 365/372 looper letters, 33 selfloop transitions, 10 changer transitions 0/358 dead transitions. [2022-11-20 11:10:55,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 358 transitions, 898 flow [2022-11-20 11:10:55,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:10:55,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:10:55,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2871 transitions. [2022-11-20 11:10:55,277 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8575268817204301 [2022-11-20 11:10:55,278 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2871 transitions. [2022-11-20 11:10:55,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2871 transitions. [2022-11-20 11:10:55,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:55,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2871 transitions. [2022-11-20 11:10:55,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 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) [2022-11-20 11:10:55,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 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) [2022-11-20 11:10:55,299 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 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) [2022-11-20 11:10:55,299 INFO L175 Difference]: Start difference. First operand has 341 places, 340 transitions, 758 flow. Second operand 9 states and 2871 transitions. [2022-11-20 11:10:55,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 358 transitions, 898 flow [2022-11-20 11:10:55,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 358 transitions, 885 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:10:55,309 INFO L231 Difference]: Finished difference. Result has 352 places, 344 transitions, 808 flow [2022-11-20 11:10:55,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=808, PETRI_PLACES=352, PETRI_TRANSITIONS=344} [2022-11-20 11:10:55,311 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 21 predicate places. [2022-11-20 11:10:55,311 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 344 transitions, 808 flow [2022-11-20 11:10:55,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 316.875) internal successors, (2535), 8 states have internal predecessors, (2535), 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) [2022-11-20 11:10:55,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:55,314 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:10:55,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:55,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:55,521 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:10:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:55,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1540669968, now seen corresponding path program 1 times [2022-11-20 11:10:55,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:55,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891479260] [2022-11-20 11:10:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:55,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:55,583 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:55,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7610613] [2022-11-20 11:10:55,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:55,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:55,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:55,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:55,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:10:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:55,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:10:55,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:56,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:56,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:56,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891479260] [2022-11-20 11:10:56,484 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:56,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7610613] [2022-11-20 11:10:56,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7610613] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:56,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:56,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:10:56,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744385967] [2022-11-20 11:10:56,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:56,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:10:56,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:56,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:10:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:10:56,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-20 11:10:56,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 344 transitions, 808 flow. Second operand has 14 states, 14 states have (on average 317.64285714285717) internal successors, (4447), 14 states have internal predecessors, (4447), 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) [2022-11-20 11:10:56,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:56,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-20 11:10:56,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:57,121 INFO L130 PetriNetUnfolder]: 39/1328 cut-off events. [2022-11-20 11:10:57,121 INFO L131 PetriNetUnfolder]: For 196/216 co-relation queries the response was YES. [2022-11-20 11:10:57,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 1328 events. 39/1328 cut-off events. For 196/216 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6561 event pairs, 0 based on Foata normal form. 4/1186 useless extension candidates. Maximal degree in co-relation 1255. Up to 27 conditions per place. [2022-11-20 11:10:57,139 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 45 selfloop transitions, 16 changer transitions 0/376 dead transitions. [2022-11-20 11:10:57,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 376 transitions, 1060 flow [2022-11-20 11:10:57,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:10:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 11:10:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4773 transitions. [2022-11-20 11:10:57,152 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8553763440860215 [2022-11-20 11:10:57,152 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4773 transitions. [2022-11-20 11:10:57,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4773 transitions. [2022-11-20 11:10:57,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:57,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4773 transitions. [2022-11-20 11:10:57,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 318.2) internal successors, (4773), 15 states have internal predecessors, (4773), 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) [2022-11-20 11:10:57,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 372.0) internal successors, (5952), 16 states have internal predecessors, (5952), 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) [2022-11-20 11:10:57,195 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 372.0) internal successors, (5952), 16 states have internal predecessors, (5952), 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) [2022-11-20 11:10:57,205 INFO L175 Difference]: Start difference. First operand has 352 places, 344 transitions, 808 flow. Second operand 15 states and 4773 transitions. [2022-11-20 11:10:57,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 376 transitions, 1060 flow [2022-11-20 11:10:57,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 376 transitions, 1042 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-20 11:10:57,216 INFO L231 Difference]: Finished difference. Result has 361 places, 348 transitions, 857 flow [2022-11-20 11:10:57,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=857, PETRI_PLACES=361, PETRI_TRANSITIONS=348} [2022-11-20 11:10:57,222 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 30 predicate places. [2022-11-20 11:10:57,224 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 348 transitions, 857 flow [2022-11-20 11:10:57,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 317.64285714285717) internal successors, (4447), 14 states have internal predecessors, (4447), 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) [2022-11-20 11:10:57,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:57,232 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:57,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:57,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:57,445 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:10:57,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:57,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1534769658, now seen corresponding path program 2 times [2022-11-20 11:10:57,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:57,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782429255] [2022-11-20 11:10:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:57,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:57,499 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:57,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635779612] [2022-11-20 11:10:57,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:10:57,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:57,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:57,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:57,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:10:57,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:10:57,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:57,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:10:57,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-20 11:10:58,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:58,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:58,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782429255] [2022-11-20 11:10:58,009 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:58,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635779612] [2022-11-20 11:10:58,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635779612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:58,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:58,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:10:58,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217422976] [2022-11-20 11:10:58,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:58,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:10:58,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:58,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:10:58,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:10:58,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 372 [2022-11-20 11:10:58,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 348 transitions, 857 flow. Second operand has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 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) [2022-11-20 11:10:58,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:58,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 372 [2022-11-20 11:10:58,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:58,513 INFO L130 PetriNetUnfolder]: 39/1328 cut-off events. [2022-11-20 11:10:58,513 INFO L131 PetriNetUnfolder]: For 197/217 co-relation queries the response was YES. [2022-11-20 11:10:58,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1614 conditions, 1328 events. 39/1328 cut-off events. For 197/217 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6523 event pairs, 0 based on Foata normal form. 0/1184 useless extension candidates. Maximal degree in co-relation 1252. Up to 68 conditions per place. [2022-11-20 11:10:58,536 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 33 selfloop transitions, 5 changer transitions 0/360 dead transitions. [2022-11-20 11:10:58,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 360 transitions, 957 flow [2022-11-20 11:10:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:10:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:10:58,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1594 transitions. [2022-11-20 11:10:58,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8569892473118279 [2022-11-20 11:10:58,541 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1594 transitions. [2022-11-20 11:10:58,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1594 transitions. [2022-11-20 11:10:58,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:58,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1594 transitions. [2022-11-20 11:10:58,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 318.8) internal successors, (1594), 5 states have internal predecessors, (1594), 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) [2022-11-20 11:10:58,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 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) [2022-11-20 11:10:58,553 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 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) [2022-11-20 11:10:58,553 INFO L175 Difference]: Start difference. First operand has 361 places, 348 transitions, 857 flow. Second operand 5 states and 1594 transitions. [2022-11-20 11:10:58,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 360 transitions, 957 flow [2022-11-20 11:10:58,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 360 transitions, 898 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-20 11:10:58,563 INFO L231 Difference]: Finished difference. Result has 356 places, 351 transitions, 832 flow [2022-11-20 11:10:58,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=832, PETRI_PLACES=356, PETRI_TRANSITIONS=351} [2022-11-20 11:10:58,565 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 25 predicate places. [2022-11-20 11:10:58,566 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 351 transitions, 832 flow [2022-11-20 11:10:58,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 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) [2022-11-20 11:10:58,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:58,567 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:58,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:58,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:10:58,774 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:10:58,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:58,775 INFO L85 PathProgramCache]: Analyzing trace with hash -333218268, now seen corresponding path program 1 times [2022-11-20 11:10:58,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:58,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408721153] [2022-11-20 11:10:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:58,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:58,822 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:58,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177238330] [2022-11-20 11:10:58,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:58,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:58,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:58,824 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:58,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:10:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:59,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:10:59,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:59,494 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:59,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:59,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:59,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408721153] [2022-11-20 11:10:59,829 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:59,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177238330] [2022-11-20 11:10:59,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177238330] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:59,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:59,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 11:10:59,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798509177] [2022-11-20 11:10:59,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:59,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:10:59,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:59,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:10:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:10:59,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-20 11:10:59,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 351 transitions, 832 flow. Second operand has 16 states, 16 states have (on average 317.6875) internal successors, (5083), 16 states have internal predecessors, (5083), 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) [2022-11-20 11:10:59,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:59,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-20 11:10:59,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:00,592 INFO L130 PetriNetUnfolder]: 20/1102 cut-off events. [2022-11-20 11:11:00,592 INFO L131 PetriNetUnfolder]: For 153/163 co-relation queries the response was YES. [2022-11-20 11:11:00,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 1102 events. 20/1102 cut-off events. For 153/163 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2861 event pairs, 0 based on Foata normal form. 8/1041 useless extension candidates. Maximal degree in co-relation 1122. Up to 20 conditions per place. [2022-11-20 11:11:00,602 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 64 selfloop transitions, 22 changer transitions 0/404 dead transitions. [2022-11-20 11:11:00,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 404 transitions, 1197 flow [2022-11-20 11:11:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:11:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:11:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6683 transitions. [2022-11-20 11:11:00,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.855478750640041 [2022-11-20 11:11:00,619 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6683 transitions. [2022-11-20 11:11:00,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6683 transitions. [2022-11-20 11:11:00,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:00,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6683 transitions. [2022-11-20 11:11:00,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 318.23809523809524) internal successors, (6683), 21 states have internal predecessors, (6683), 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) [2022-11-20 11:11:00,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 372.0) internal successors, (8184), 22 states have internal predecessors, (8184), 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) [2022-11-20 11:11:00,662 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 372.0) internal successors, (8184), 22 states have internal predecessors, (8184), 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) [2022-11-20 11:11:00,663 INFO L175 Difference]: Start difference. First operand has 356 places, 351 transitions, 832 flow. Second operand 21 states and 6683 transitions. [2022-11-20 11:11:00,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 404 transitions, 1197 flow [2022-11-20 11:11:00,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 404 transitions, 1187 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-20 11:11:00,674 INFO L231 Difference]: Finished difference. Result has 380 places, 360 transitions, 942 flow [2022-11-20 11:11:00,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=942, PETRI_PLACES=380, PETRI_TRANSITIONS=360} [2022-11-20 11:11:00,676 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 49 predicate places. [2022-11-20 11:11:00,676 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 360 transitions, 942 flow [2022-11-20 11:11:00,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 317.6875) internal successors, (5083), 16 states have internal predecessors, (5083), 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) [2022-11-20 11:11:00,678 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:00,679 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:00,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:00,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 11:11:00,898 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:11:00,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1870380772, now seen corresponding path program 2 times [2022-11-20 11:11:00,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:00,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393634294] [2022-11-20 11:11:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:00,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:00,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:00,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969222405] [2022-11-20 11:11:00,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:00,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:00,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:00,988 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:01,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:11:01,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:11:01,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:01,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:11:01,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-20 11:11:01,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:01,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:01,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393634294] [2022-11-20 11:11:01,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:01,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969222405] [2022-11-20 11:11:01,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969222405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:01,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:01,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:11:01,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258979674] [2022-11-20 11:11:01,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:01,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:01,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:01,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:01,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:01,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 372 [2022-11-20 11:11:01,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 360 transitions, 942 flow. Second operand has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-11-20 11:11:01,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:01,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 372 [2022-11-20 11:11:01,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:02,425 INFO L130 PetriNetUnfolder]: 20/1100 cut-off events. [2022-11-20 11:11:02,425 INFO L131 PetriNetUnfolder]: For 217/227 co-relation queries the response was YES. [2022-11-20 11:11:02,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 1100 events. 20/1100 cut-off events. For 217/227 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2846 event pairs, 0 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 1123. Up to 89 conditions per place. [2022-11-20 11:11:02,439 INFO L137 encePairwiseOnDemand]: 368/372 looper letters, 22 selfloop transitions, 5 changer transitions 0/358 dead transitions. [2022-11-20 11:11:02,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 358 transitions, 986 flow [2022-11-20 11:11:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:11:02,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:11:02,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1269 transitions. [2022-11-20 11:11:02,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8528225806451613 [2022-11-20 11:11:02,444 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1269 transitions. [2022-11-20 11:11:02,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1269 transitions. [2022-11-20 11:11:02,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:02,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1269 transitions. [2022-11-20 11:11:02,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 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) [2022-11-20 11:11:02,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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) [2022-11-20 11:11:02,453 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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) [2022-11-20 11:11:02,453 INFO L175 Difference]: Start difference. First operand has 380 places, 360 transitions, 942 flow. Second operand 4 states and 1269 transitions. [2022-11-20 11:11:02,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 358 transitions, 986 flow [2022-11-20 11:11:02,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 358 transitions, 963 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 11:11:02,464 INFO L231 Difference]: Finished difference. Result has 371 places, 358 transitions, 919 flow [2022-11-20 11:11:02,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=919, PETRI_PLACES=371, PETRI_TRANSITIONS=358} [2022-11-20 11:11:02,466 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 40 predicate places. [2022-11-20 11:11:02,466 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 358 transitions, 919 flow [2022-11-20 11:11:02,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-11-20 11:11:02,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:02,468 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:02,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 11:11:02,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:02,674 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:11:02,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:02,675 INFO L85 PathProgramCache]: Analyzing trace with hash -306908668, now seen corresponding path program 1 times [2022-11-20 11:11:02,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:02,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921918805] [2022-11-20 11:11:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:02,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:02,799 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:02,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907359050] [2022-11-20 11:11:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:02,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:02,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:02,801 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:02,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:11:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:03,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:11:03,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:04,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:05,009 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:05,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:05,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921918805] [2022-11-20 11:11:05,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:05,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907359050] [2022-11-20 11:11:05,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907359050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:05,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:05,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-20 11:11:05,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464599029] [2022-11-20 11:11:05,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:05,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:11:05,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:05,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:11:05,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:11:05,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-20 11:11:05,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 358 transitions, 919 flow. Second operand has 32 states, 32 states have (on average 318.125) internal successors, (10180), 32 states have internal predecessors, (10180), 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) [2022-11-20 11:11:05,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:05,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-20 11:11:05,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:06,755 INFO L130 PetriNetUnfolder]: 20/1772 cut-off events. [2022-11-20 11:11:06,755 INFO L131 PetriNetUnfolder]: For 762/772 co-relation queries the response was YES. [2022-11-20 11:11:06,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 1772 events. 20/1772 cut-off events. For 762/772 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2888 event pairs, 0 based on Foata normal form. 16/1719 useless extension candidates. Maximal degree in co-relation 2237. Up to 38 conditions per place. [2022-11-20 11:11:06,764 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 128 selfloop transitions, 46 changer transitions 0/490 dead transitions. [2022-11-20 11:11:06,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 490 transitions, 1863 flow [2022-11-20 11:11:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 11:11:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 11:11:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 14311 transitions. [2022-11-20 11:11:06,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8548984468339307 [2022-11-20 11:11:06,790 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 14311 transitions. [2022-11-20 11:11:06,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 14311 transitions. [2022-11-20 11:11:06,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:06,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 14311 transitions. [2022-11-20 11:11:06,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 318.02222222222224) internal successors, (14311), 45 states have internal predecessors, (14311), 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) [2022-11-20 11:11:06,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 372.0) internal successors, (17112), 46 states have internal predecessors, (17112), 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) [2022-11-20 11:11:06,858 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 372.0) internal successors, (17112), 46 states have internal predecessors, (17112), 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) [2022-11-20 11:11:06,858 INFO L175 Difference]: Start difference. First operand has 371 places, 358 transitions, 919 flow. Second operand 45 states and 14311 transitions. [2022-11-20 11:11:06,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 490 transitions, 1863 flow [2022-11-20 11:11:06,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 490 transitions, 1853 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:11:06,871 INFO L231 Difference]: Finished difference. Result has 421 places, 383 transitions, 1232 flow [2022-11-20 11:11:06,872 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1232, PETRI_PLACES=421, PETRI_TRANSITIONS=383} [2022-11-20 11:11:06,872 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 90 predicate places. [2022-11-20 11:11:06,872 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 383 transitions, 1232 flow [2022-11-20 11:11:06,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 318.125) internal successors, (10180), 32 states have internal predecessors, (10180), 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) [2022-11-20 11:11:06,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:06,876 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:06,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:07,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:11:07,084 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:11:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:07,085 INFO L85 PathProgramCache]: Analyzing trace with hash -463162492, now seen corresponding path program 2 times [2022-11-20 11:11:07,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:07,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207254060] [2022-11-20 11:11:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:07,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:07,235 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:07,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122808259] [2022-11-20 11:11:07,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:07,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:07,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:07,237 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:07,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:11:07,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:11:07,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:07,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:11:07,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2022-11-20 11:11:07,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:07,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:07,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207254060] [2022-11-20 11:11:07,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:07,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122808259] [2022-11-20 11:11:07,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122808259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:07,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:07,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:11:07,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993910418] [2022-11-20 11:11:07,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:07,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:07,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:07,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:07,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:07,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 372 [2022-11-20 11:11:07,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 383 transitions, 1232 flow. Second operand has 4 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 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) [2022-11-20 11:11:07,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:07,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 372 [2022-11-20 11:11:07,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:08,708 INFO L130 PetriNetUnfolder]: 15/1656 cut-off events. [2022-11-20 11:11:08,709 INFO L131 PetriNetUnfolder]: For 778/822 co-relation queries the response was YES. [2022-11-20 11:11:08,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2294 conditions, 1656 events. 15/1656 cut-off events. For 778/822 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2036 event pairs, 0 based on Foata normal form. 6/1612 useless extension candidates. Maximal degree in co-relation 2076. Up to 38 conditions per place. [2022-11-20 11:11:08,723 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 15 selfloop transitions, 4 changer transitions 0/384 dead transitions. [2022-11-20 11:11:08,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 384 transitions, 1272 flow [2022-11-20 11:11:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:11:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:11:08,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1611 transitions. [2022-11-20 11:11:08,727 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8661290322580645 [2022-11-20 11:11:08,727 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1611 transitions. [2022-11-20 11:11:08,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1611 transitions. [2022-11-20 11:11:08,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:08,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1611 transitions. [2022-11-20 11:11:08,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 322.2) internal successors, (1611), 5 states have internal predecessors, (1611), 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) [2022-11-20 11:11:08,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 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) [2022-11-20 11:11:08,736 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 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) [2022-11-20 11:11:08,736 INFO L175 Difference]: Start difference. First operand has 421 places, 383 transitions, 1232 flow. Second operand 5 states and 1611 transitions. [2022-11-20 11:11:08,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 384 transitions, 1272 flow [2022-11-20 11:11:08,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 384 transitions, 1215 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-20 11:11:08,753 INFO L231 Difference]: Finished difference. Result has 407 places, 382 transitions, 1185 flow [2022-11-20 11:11:08,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1185, PETRI_PLACES=407, PETRI_TRANSITIONS=382} [2022-11-20 11:11:08,755 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 76 predicate places. [2022-11-20 11:11:08,755 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 382 transitions, 1185 flow [2022-11-20 11:11:08,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 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) [2022-11-20 11:11:08,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:08,757 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:08,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:08,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:08,963 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:11:08,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:08,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1473134581, now seen corresponding path program 1 times [2022-11-20 11:11:08,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:08,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994028102] [2022-11-20 11:11:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:08,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:09,132 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:09,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562074579] [2022-11-20 11:11:09,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:09,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:09,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:09,135 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:09,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:11:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:10,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 11:11:10,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:11,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:11,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:14,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:14,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994028102] [2022-11-20 11:11:14,077 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:14,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562074579] [2022-11-20 11:11:14,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562074579] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:14,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:14,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-20 11:11:14,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548049724] [2022-11-20 11:11:14,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:14,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-20 11:11:14,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:14,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-20 11:11:14,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 11:11:14,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-20 11:11:14,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 382 transitions, 1185 flow. Second operand has 61 states, 61 states have (on average 318.37704918032784) internal successors, (19421), 61 states have internal predecessors, (19421), 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) [2022-11-20 11:11:14,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:14,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-20 11:11:14,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:19,063 INFO L130 PetriNetUnfolder]: 15/2916 cut-off events. [2022-11-20 11:11:19,064 INFO L131 PetriNetUnfolder]: For 4978/4986 co-relation queries the response was YES. [2022-11-20 11:11:19,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4698 conditions, 2916 events. 15/2916 cut-off events. For 4978/4986 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2122 event pairs, 0 based on Foata normal form. 30/2897 useless extension candidates. Maximal degree in co-relation 4478. Up to 96 conditions per place. [2022-11-20 11:11:19,078 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 248 selfloop transitions, 91 changer transitions 0/654 dead transitions. [2022-11-20 11:11:19,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 654 transitions, 3275 flow [2022-11-20 11:11:19,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-20 11:11:19,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-20 11:11:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 28613 transitions. [2022-11-20 11:11:19,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8546296296296296 [2022-11-20 11:11:19,114 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 28613 transitions. [2022-11-20 11:11:19,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 28613 transitions. [2022-11-20 11:11:19,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:19,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 28613 transitions. [2022-11-20 11:11:19,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 317.9222222222222) internal successors, (28613), 90 states have internal predecessors, (28613), 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) [2022-11-20 11:11:19,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 372.0) internal successors, (33852), 91 states have internal predecessors, (33852), 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) [2022-11-20 11:11:19,227 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 372.0) internal successors, (33852), 91 states have internal predecessors, (33852), 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) [2022-11-20 11:11:19,227 INFO L175 Difference]: Start difference. First operand has 407 places, 382 transitions, 1185 flow. Second operand 90 states and 28613 transitions. [2022-11-20 11:11:19,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 654 transitions, 3275 flow [2022-11-20 11:11:19,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 654 transitions, 3267 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:11:19,255 INFO L231 Difference]: Finished difference. Result has 508 places, 428 transitions, 1866 flow [2022-11-20 11:11:19,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1866, PETRI_PLACES=508, PETRI_TRANSITIONS=428} [2022-11-20 11:11:19,257 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 177 predicate places. [2022-11-20 11:11:19,257 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 428 transitions, 1866 flow [2022-11-20 11:11:19,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 318.37704918032784) internal successors, (19421), 61 states have internal predecessors, (19421), 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) [2022-11-20 11:11:19,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:19,262 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:19,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:19,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:11:19,474 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:11:19,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:19,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1195462816, now seen corresponding path program 2 times [2022-11-20 11:11:19,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:19,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374494908] [2022-11-20 11:11:19,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:19,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:19,739 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:19,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635100367] [2022-11-20 11:11:19,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:19,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:19,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:19,743 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:19,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:11:20,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:11:20,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:20,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:11:20,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-20 11:11:20,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:20,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:20,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374494908] [2022-11-20 11:11:20,918 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:20,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635100367] [2022-11-20 11:11:20,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635100367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:20,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:20,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:11:20,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48795858] [2022-11-20 11:11:20,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:20,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:20,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:20,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:20,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:20,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 372 [2022-11-20 11:11:20,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 428 transitions, 1866 flow. Second operand has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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) [2022-11-20 11:11:20,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:20,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 372 [2022-11-20 11:11:20,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:22,772 INFO L130 PetriNetUnfolder]: 15/2915 cut-off events. [2022-11-20 11:11:22,772 INFO L131 PetriNetUnfolder]: For 3003/3043 co-relation queries the response was YES. [2022-11-20 11:11:22,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4393 conditions, 2915 events. 15/2915 cut-off events. For 3003/3043 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2095 event pairs, 0 based on Foata normal form. 2/2869 useless extension candidates. Maximal degree in co-relation 4158. Up to 96 conditions per place. [2022-11-20 11:11:22,788 INFO L137 encePairwiseOnDemand]: 368/372 looper letters, 13 selfloop transitions, 3 changer transitions 0/427 dead transitions. [2022-11-20 11:11:22,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 427 transitions, 1896 flow [2022-11-20 11:11:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:11:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:11:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1289 transitions. [2022-11-20 11:11:22,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.866263440860215 [2022-11-20 11:11:22,792 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1289 transitions. [2022-11-20 11:11:22,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1289 transitions. [2022-11-20 11:11:22,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:22,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1289 transitions. [2022-11-20 11:11:22,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 322.25) internal successors, (1289), 4 states have internal predecessors, (1289), 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) [2022-11-20 11:11:22,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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) [2022-11-20 11:11:22,798 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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) [2022-11-20 11:11:22,798 INFO L175 Difference]: Start difference. First operand has 508 places, 428 transitions, 1866 flow. Second operand 4 states and 1289 transitions. [2022-11-20 11:11:22,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 427 transitions, 1896 flow [2022-11-20 11:11:22,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 427 transitions, 1777 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-20 11:11:22,845 INFO L231 Difference]: Finished difference. Result has 468 places, 427 transitions, 1751 flow [2022-11-20 11:11:22,846 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1751, PETRI_PLACES=468, PETRI_TRANSITIONS=427} [2022-11-20 11:11:22,847 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 137 predicate places. [2022-11-20 11:11:22,847 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 427 transitions, 1751 flow [2022-11-20 11:11:22,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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) [2022-11-20 11:11:22,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:22,851 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:22,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:23,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:23,059 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:11:23,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:23,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1942129921, now seen corresponding path program 1 times [2022-11-20 11:11:23,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:23,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704182693] [2022-11-20 11:11:23,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:23,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:23,401 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:23,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644891333] [2022-11-20 11:11:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:23,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:23,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:23,403 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:23,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:11:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:25,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 5187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:11:25,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-20 11:11:27,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-20 11:11:29,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:29,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704182693] [2022-11-20 11:11:29,711 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:29,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644891333] [2022-11-20 11:11:29,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644891333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:29,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:29,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:11:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200649016] [2022-11-20 11:11:29,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:29,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:11:29,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:29,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:11:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:29,718 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 372 [2022-11-20 11:11:29,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 427 transitions, 1751 flow. Second operand has 8 states, 8 states have (on average 314.75) internal successors, (2518), 8 states have internal predecessors, (2518), 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) [2022-11-20 11:11:29,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:29,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 372 [2022-11-20 11:11:29,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:33,742 INFO L130 PetriNetUnfolder]: 16/4221 cut-off events. [2022-11-20 11:11:33,742 INFO L131 PetriNetUnfolder]: For 4641/4649 co-relation queries the response was YES. [2022-11-20 11:11:33,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6772 conditions, 4221 events. 16/4221 cut-off events. For 4641/4649 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1790 event pairs, 0 based on Foata normal form. 3/4176 useless extension candidates. Maximal degree in co-relation 6536. Up to 187 conditions per place. [2022-11-20 11:11:33,765 INFO L137 encePairwiseOnDemand]: 365/372 looper letters, 42 selfloop transitions, 9 changer transitions 0/451 dead transitions. [2022-11-20 11:11:33,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 451 transitions, 1915 flow [2022-11-20 11:11:33,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:11:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:11:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2853 transitions. [2022-11-20 11:11:33,771 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8521505376344086 [2022-11-20 11:11:33,771 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2853 transitions. [2022-11-20 11:11:33,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2853 transitions. [2022-11-20 11:11:33,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:33,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2853 transitions. [2022-11-20 11:11:33,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 317.0) internal successors, (2853), 9 states have internal predecessors, (2853), 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) [2022-11-20 11:11:33,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 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) [2022-11-20 11:11:33,782 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 372.0) internal successors, (3720), 10 states have internal predecessors, (3720), 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) [2022-11-20 11:11:33,782 INFO L175 Difference]: Start difference. First operand has 468 places, 427 transitions, 1751 flow. Second operand 9 states and 2853 transitions. [2022-11-20 11:11:33,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 451 transitions, 1915 flow [2022-11-20 11:11:33,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 451 transitions, 1909 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:11:33,832 INFO L231 Difference]: Finished difference. Result has 478 places, 431 transitions, 1801 flow [2022-11-20 11:11:33,833 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1801, PETRI_PLACES=478, PETRI_TRANSITIONS=431} [2022-11-20 11:11:33,833 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 147 predicate places. [2022-11-20 11:11:33,834 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 431 transitions, 1801 flow [2022-11-20 11:11:33,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 314.75) internal successors, (2518), 8 states have internal predecessors, (2518), 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) [2022-11-20 11:11:33,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:33,835 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 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] [2022-11-20 11:11:33,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:34,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:34,053 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:11:34,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:34,053 INFO L85 PathProgramCache]: Analyzing trace with hash -541461833, now seen corresponding path program 1 times [2022-11-20 11:11:34,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:34,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560085959] [2022-11-20 11:11:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:34,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:34,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:34,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106332303] [2022-11-20 11:11:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:34,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:34,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:34,282 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:34,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:11:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:39,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 5333 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:11:39,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 11:11:41,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 11:11:44,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:44,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560085959] [2022-11-20 11:11:44,494 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:44,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106332303] [2022-11-20 11:11:44,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106332303] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:44,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:44,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:11:44,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070077466] [2022-11-20 11:11:44,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:44,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:11:44,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:44,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:11:44,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:11:44,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 372 [2022-11-20 11:11:44,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 431 transitions, 1801 flow. Second operand has 14 states, 14 states have (on average 306.35714285714283) internal successors, (4289), 14 states have internal predecessors, (4289), 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) [2022-11-20 11:11:44,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:44,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 372 [2022-11-20 11:11:44,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:49,850 INFO L130 PetriNetUnfolder]: 16/4189 cut-off events. [2022-11-20 11:11:49,850 INFO L131 PetriNetUnfolder]: For 4829/4837 co-relation queries the response was YES. [2022-11-20 11:11:49,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 4189 events. 16/4189 cut-off events. For 4829/4837 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1585 event pairs, 0 based on Foata normal form. 32/4173 useless extension candidates. Maximal degree in co-relation 6977. Up to 307 conditions per place. [2022-11-20 11:11:49,877 INFO L137 encePairwiseOnDemand]: 358/372 looper letters, 228 selfloop transitions, 144 changer transitions 0/671 dead transitions. [2022-11-20 11:11:49,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 671 transitions, 4669 flow [2022-11-20 11:11:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:11:49,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 11:11:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7331 transitions. [2022-11-20 11:11:49,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8211245519713262 [2022-11-20 11:11:49,887 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7331 transitions. [2022-11-20 11:11:49,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7331 transitions. [2022-11-20 11:11:49,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:49,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7331 transitions. [2022-11-20 11:11:49,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 305.4583333333333) internal successors, (7331), 24 states have internal predecessors, (7331), 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) [2022-11-20 11:11:49,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 372.0) internal successors, (9300), 25 states have internal predecessors, (9300), 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) [2022-11-20 11:11:49,913 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 372.0) internal successors, (9300), 25 states have internal predecessors, (9300), 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) [2022-11-20 11:11:49,913 INFO L175 Difference]: Start difference. First operand has 478 places, 431 transitions, 1801 flow. Second operand 24 states and 7331 transitions. [2022-11-20 11:11:49,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 671 transitions, 4669 flow [2022-11-20 11:11:49,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 671 transitions, 4653 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-20 11:11:49,971 INFO L231 Difference]: Finished difference. Result has 502 places, 562 transitions, 3840 flow [2022-11-20 11:11:49,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3840, PETRI_PLACES=502, PETRI_TRANSITIONS=562} [2022-11-20 11:11:49,972 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 171 predicate places. [2022-11-20 11:11:49,973 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 562 transitions, 3840 flow [2022-11-20 11:11:49,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 306.35714285714283) internal successors, (4289), 14 states have internal predecessors, (4289), 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) [2022-11-20 11:11:49,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:49,975 INFO L209 CegarLoopForPetriNet]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 2, 2, 2, 2, 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] [2022-11-20 11:11:50,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:50,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:11:50,195 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:11:50,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:50,196 INFO L85 PathProgramCache]: Analyzing trace with hash -387660581, now seen corresponding path program 1 times [2022-11-20 11:11:50,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:50,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598955519] [2022-11-20 11:11:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:50,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:50,435 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:50,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143130156] [2022-11-20 11:11:50,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:50,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:50,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:50,440 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:50,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:12:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:04,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 5501 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:12:04,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2610 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-20 11:12:07,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:12:07,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:07,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598955519] [2022-11-20 11:12:07,074 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:12:07,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143130156] [2022-11-20 11:12:07,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143130156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:07,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:07,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:12:07,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869461784] [2022-11-20 11:12:07,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:07,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:12:07,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:07,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:12:07,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:12:07,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 372 [2022-11-20 11:12:07,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 562 transitions, 3840 flow. Second operand has 11 states, 11 states have (on average 305.45454545454544) internal successors, (3360), 11 states have internal predecessors, (3360), 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) [2022-11-20 11:12:07,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:07,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 372 [2022-11-20 11:12:07,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:11,262 INFO L130 PetriNetUnfolder]: 16/4132 cut-off events. [2022-11-20 11:12:11,262 INFO L131 PetriNetUnfolder]: For 7168/7176 co-relation queries the response was YES. [2022-11-20 11:12:11,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7689 conditions, 4132 events. 16/4132 cut-off events. For 7168/7176 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1564 event pairs, 0 based on Foata normal form. 57/4141 useless extension candidates. Maximal degree in co-relation 7443. Up to 370 conditions per place. [2022-11-20 11:12:11,281 INFO L137 encePairwiseOnDemand]: 362/372 looper letters, 212 selfloop transitions, 139 changer transitions 0/650 dead transitions. [2022-11-20 11:12:11,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 650 transitions, 5324 flow [2022-11-20 11:12:11,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:12:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 11:12:11,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4585 transitions. [2022-11-20 11:12:11,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216845878136201 [2022-11-20 11:12:11,308 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4585 transitions. [2022-11-20 11:12:11,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4585 transitions. [2022-11-20 11:12:11,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:11,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4585 transitions. [2022-11-20 11:12:11,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 305.6666666666667) internal successors, (4585), 15 states have internal predecessors, (4585), 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) [2022-11-20 11:12:11,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 372.0) internal successors, (5952), 16 states have internal predecessors, (5952), 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) [2022-11-20 11:12:11,333 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 372.0) internal successors, (5952), 16 states have internal predecessors, (5952), 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) [2022-11-20 11:12:11,335 INFO L175 Difference]: Start difference. First operand has 502 places, 562 transitions, 3840 flow. Second operand 15 states and 4585 transitions. [2022-11-20 11:12:11,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 650 transitions, 5324 flow [2022-11-20 11:12:11,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 650 transitions, 5292 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-20 11:12:11,664 INFO L231 Difference]: Finished difference. Result has 509 places, 619 transitions, 5019 flow [2022-11-20 11:12:11,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=3789, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5019, PETRI_PLACES=509, PETRI_TRANSITIONS=619} [2022-11-20 11:12:11,666 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 178 predicate places. [2022-11-20 11:12:11,666 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 619 transitions, 5019 flow [2022-11-20 11:12:11,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 305.45454545454544) internal successors, (3360), 11 states have internal predecessors, (3360), 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) [2022-11-20 11:12:11,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:11,668 INFO L209 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:12:11,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:11,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:12:11,891 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:12:11,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:11,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2049767149, now seen corresponding path program 2 times [2022-11-20 11:12:11,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:11,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056903710] [2022-11-20 11:12:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:11,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:12,248 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:12:12,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938782176] [2022-11-20 11:12:12,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:12:12,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:12,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:12,255 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:12,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 11:13:21,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:13:21,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:13:21,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 10560 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:13:21,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 0 proven. 42087 refuted. 0 times theorem prover too weak. 35730 trivial. 0 not checked. [2022-11-20 11:13:26,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:16:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 0 proven. 5105 refuted. 36982 times theorem prover too weak. 35730 trivial. 0 not checked. [2022-11-20 11:16:17,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:17,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056903710] [2022-11-20 11:16:17,356 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:16:17,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938782176] [2022-11-20 11:16:17,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938782176] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:16:17,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:16:17,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-20 11:16:17,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591597613] [2022-11-20 11:16:17,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:16:17,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:16:17,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:17,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:16:17,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=356, Unknown=6, NotChecked=0, Total=462 [2022-11-20 11:16:17,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 372 [2022-11-20 11:16:17,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 619 transitions, 5019 flow. Second operand has 22 states, 22 states have (on average 307.1363636363636) internal successors, (6757), 22 states have internal predecessors, (6757), 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) [2022-11-20 11:16:17,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:16:17,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 372 [2022-11-20 11:16:17,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:17:13,836 INFO L130 PetriNetUnfolder]: 75/7927 cut-off events. [2022-11-20 11:17:13,836 INFO L131 PetriNetUnfolder]: For 17661/17669 co-relation queries the response was YES. [2022-11-20 11:17:13,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15807 conditions, 7927 events. 75/7927 cut-off events. For 17661/17669 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2055 event pairs, 0 based on Foata normal form. 30/7909 useless extension candidates. Maximal degree in co-relation 15559. Up to 307 conditions per place. [2022-11-20 11:17:13,870 INFO L137 encePairwiseOnDemand]: 359/372 looper letters, 651 selfloop transitions, 117 changer transitions 0/1067 dead transitions. [2022-11-20 11:17:13,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 1067 transitions, 11795 flow [2022-11-20 11:17:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-20 11:17:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-20 11:17:13,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 15309 transitions. [2022-11-20 11:17:13,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8230645161290323 [2022-11-20 11:17:13,889 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 15309 transitions. [2022-11-20 11:17:13,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 15309 transitions. [2022-11-20 11:17:13,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:17:13,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 15309 transitions. [2022-11-20 11:17:13,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 306.18) internal successors, (15309), 50 states have internal predecessors, (15309), 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) [2022-11-20 11:17:13,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 372.0) internal successors, (18972), 51 states have internal predecessors, (18972), 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) [2022-11-20 11:17:13,937 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 372.0) internal successors, (18972), 51 states have internal predecessors, (18972), 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) [2022-11-20 11:17:13,938 INFO L175 Difference]: Start difference. First operand has 509 places, 619 transitions, 5019 flow. Second operand 50 states and 15309 transitions. [2022-11-20 11:17:13,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 1067 transitions, 11795 flow [2022-11-20 11:17:14,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 1067 transitions, 11623 flow, removed 58 selfloop flow, removed 8 redundant places. [2022-11-20 11:17:14,057 INFO L231 Difference]: Finished difference. Result has 563 places, 721 transitions, 6854 flow [2022-11-20 11:17:14,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=4876, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=6854, PETRI_PLACES=563, PETRI_TRANSITIONS=721} [2022-11-20 11:17:14,058 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 232 predicate places. [2022-11-20 11:17:14,059 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 721 transitions, 6854 flow [2022-11-20 11:17:14,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 307.1363636363636) internal successors, (6757), 22 states have internal predecessors, (6757), 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) [2022-11-20 11:17:14,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:17:14,061 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:17:14,287 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2022-11-20 11:17:14,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 137 [2022-11-20 11:17:14,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:17:14,353 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:17:14,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:14,355 INFO L85 PathProgramCache]: Analyzing trace with hash -426009679, now seen corresponding path program 2 times [2022-11-20 11:17:14,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:14,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28413026] [2022-11-20 11:17:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:14,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:15,033 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:17:15,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184509499] [2022-11-20 11:17:15,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:17:15,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:15,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:17:15,035 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:17:15,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 11:17:20,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:17:20,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:17:20,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 15307 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:17:20,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-20 11:17:27,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:17:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-20 11:17:36,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:36,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28413026] [2022-11-20 11:17:36,707 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:17:36,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184509499] [2022-11-20 11:17:36,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184509499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:17:36,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:17:36,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 11:17:36,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291882045] [2022-11-20 11:17:36,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:17:36,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:17:36,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:36,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:17:36,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:17:36,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 372 [2022-11-20 11:17:36,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 721 transitions, 6854 flow. Second operand has 16 states, 16 states have (on average 315.875) internal successors, (5054), 16 states have internal predecessors, (5054), 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) [2022-11-20 11:17:36,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:17:36,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 372 [2022-11-20 11:17:36,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:17:55,449 INFO L130 PetriNetUnfolder]: 20/9202 cut-off events. [2022-11-20 11:17:55,450 INFO L131 PetriNetUnfolder]: For 25933/25941 co-relation queries the response was YES. [2022-11-20 11:17:55,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18175 conditions, 9202 events. 20/9202 cut-off events. For 25933/25941 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1648 event pairs, 0 based on Foata normal form. 4/9158 useless extension candidates. Maximal degree in co-relation 17915. Up to 336 conditions per place. [2022-11-20 11:17:55,489 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 83 selfloop transitions, 21 changer transitions 0/777 dead transitions. [2022-11-20 11:17:55,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 777 transitions, 7313 flow [2022-11-20 11:17:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:17:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:17:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6633 transitions. [2022-11-20 11:17:55,501 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8490783410138248 [2022-11-20 11:17:55,502 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6633 transitions. [2022-11-20 11:17:55,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6633 transitions. [2022-11-20 11:17:55,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:17:55,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6633 transitions. [2022-11-20 11:17:55,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 315.85714285714283) internal successors, (6633), 21 states have internal predecessors, (6633), 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) [2022-11-20 11:17:55,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 372.0) internal successors, (8184), 22 states have internal predecessors, (8184), 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) [2022-11-20 11:17:55,529 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 372.0) internal successors, (8184), 22 states have internal predecessors, (8184), 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) [2022-11-20 11:17:55,530 INFO L175 Difference]: Start difference. First operand has 563 places, 721 transitions, 6854 flow. Second operand 21 states and 6633 transitions. [2022-11-20 11:17:55,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 777 transitions, 7313 flow [2022-11-20 11:17:55,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 777 transitions, 7223 flow, removed 33 selfloop flow, removed 12 redundant places. [2022-11-20 11:17:55,690 INFO L231 Difference]: Finished difference. Result has 574 places, 725 transitions, 6869 flow [2022-11-20 11:17:55,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=6751, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6869, PETRI_PLACES=574, PETRI_TRANSITIONS=725} [2022-11-20 11:17:55,691 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 243 predicate places. [2022-11-20 11:17:55,691 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 725 transitions, 6869 flow [2022-11-20 11:17:55,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 315.875) internal successors, (5054), 16 states have internal predecessors, (5054), 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) [2022-11-20 11:17:55,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:17:55,692 INFO L209 CegarLoopForPetriNet]: trace histogram [94, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 93, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:55,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 11:17:55,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:17:55,893 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:17:55,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:55,894 INFO L85 PathProgramCache]: Analyzing trace with hash -292841115, now seen corresponding path program 3 times [2022-11-20 11:17:55,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:55,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250657719] [2022-11-20 11:17:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:55,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:56,527 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:17:56,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641711321] [2022-11-20 11:17:56,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:17:56,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:56,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:17:56,531 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:17:56,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 11:17:59,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:17:59,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:17:59,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:18:00,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 175944 backedges. 11373 proven. 0 refuted. 0 times theorem prover too weak. 164571 trivial. 0 not checked. [2022-11-20 11:18:01,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:18:01,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:01,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250657719] [2022-11-20 11:18:01,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:18:01,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641711321] [2022-11-20 11:18:01,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641711321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:01,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:01,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:18:01,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275769501] [2022-11-20 11:18:01,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:01,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:18:01,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:18:01,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:18:01,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 372 [2022-11-20 11:18:01,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 725 transitions, 6869 flow. Second operand has 7 states, 7 states have (on average 312.2857142857143) internal successors, (2186), 7 states have internal predecessors, (2186), 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) [2022-11-20 11:18:01,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:01,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 372 [2022-11-20 11:18:01,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:22,498 INFO L130 PetriNetUnfolder]: 20/9092 cut-off events. [2022-11-20 11:18:22,498 INFO L131 PetriNetUnfolder]: For 24293/24301 co-relation queries the response was YES. [2022-11-20 11:18:22,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18503 conditions, 9092 events. 20/9092 cut-off events. For 24293/24301 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1501 event pairs, 0 based on Foata normal form. 110/9154 useless extension candidates. Maximal degree in co-relation 18243. Up to 848 conditions per place. [2022-11-20 11:18:22,533 INFO L137 encePairwiseOnDemand]: 362/372 looper letters, 42 selfloop transitions, 380 changer transitions 0/732 dead transitions. [2022-11-20 11:18:22,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 732 transitions, 7728 flow [2022-11-20 11:18:22,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:18:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:18:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2487 transitions. [2022-11-20 11:18:22,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8356854838709677 [2022-11-20 11:18:22,541 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2487 transitions. [2022-11-20 11:18:22,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2487 transitions. [2022-11-20 11:18:22,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:22,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2487 transitions. [2022-11-20 11:18:22,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 310.875) internal successors, (2487), 8 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:22,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 372.0) internal successors, (3348), 9 states have internal predecessors, (3348), 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) [2022-11-20 11:18:22,549 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 372.0) internal successors, (3348), 9 states have internal predecessors, (3348), 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) [2022-11-20 11:18:22,550 INFO L175 Difference]: Start difference. First operand has 574 places, 725 transitions, 6869 flow. Second operand 8 states and 2487 transitions. [2022-11-20 11:18:22,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 732 transitions, 7728 flow [2022-11-20 11:18:22,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 732 transitions, 7589 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-20 11:18:22,720 INFO L231 Difference]: Finished difference. Result has 567 places, 725 transitions, 7623 flow [2022-11-20 11:18:22,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=6699, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=377, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7623, PETRI_PLACES=567, PETRI_TRANSITIONS=725} [2022-11-20 11:18:22,722 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 236 predicate places. [2022-11-20 11:18:22,722 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 725 transitions, 7623 flow [2022-11-20 11:18:22,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.2857142857143) internal successors, (2186), 7 states have internal predecessors, (2186), 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) [2022-11-20 11:18:22,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:22,726 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 11:18:22,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:22,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:22,943 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-20 11:18:22,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash -137291755, now seen corresponding path program 3 times [2022-11-20 11:18:22,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:22,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146464950] [2022-11-20 11:18:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:22,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:24,253 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:18:24,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582252869] [2022-11-20 11:18:24,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:18:24,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:24,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:24,272 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:24,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90bdf34c-5684-4849-8858-9b65b7955982/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process