./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/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_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-e04fb08 [2022-11-16 10:54:05,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:54:05,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:54:05,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:54:05,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:54:05,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:54:05,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:54:05,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:54:05,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:54:05,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:54:05,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:54:05,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:54:05,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:54:05,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:54:05,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:54:05,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:54:05,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:54:05,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:54:05,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:54:05,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:54:05,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:54:05,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:54:05,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:54:05,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:54:05,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:54:05,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:54:05,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:54:05,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:54:05,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:54:05,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:54:05,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:54:05,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:54:05,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:54:05,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:54:05,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:54:05,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:54:05,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:54:05,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:54:05,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:54:05,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:54:05,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:54:05,117 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 10:54:05,148 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:54:05,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:54:05,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:54:05,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:54:05,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:54:05,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:54:05,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:54:05,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:54:05,151 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:54:05,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:54:05,153 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:54:05,153 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:54:05,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:54:05,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:54:05,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:54:05,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:54:05,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:54:05,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:54:05,154 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 10:54:05,154 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:54:05,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:54:05,155 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:54:05,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:54:05,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:54:05,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:54:05,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:54:05,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:05,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:54:05,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:54:05,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:54:05,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:54:05,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:54:05,157 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:54:05,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:54:05,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:54:05,158 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_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2022-11-16 10:54:05,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:54:05,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:54:05,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:54:05,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:54:05,493 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:54:05,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-11-16 10:54:05,565 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/data/19142fc91/e3f669689fc84697b35d2b220084e194/FLAG058b0a76b [2022-11-16 10:54:06,243 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:54:06,249 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-11-16 10:54:06,264 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/data/19142fc91/e3f669689fc84697b35d2b220084e194/FLAG058b0a76b [2022-11-16 10:54:06,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/data/19142fc91/e3f669689fc84697b35d2b220084e194 [2022-11-16 10:54:06,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:54:06,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:54:06,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:06,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:54:06,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:54:06,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:06" (1/1) ... [2022-11-16 10:54:06,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417f338f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:06, skipping insertion in model container [2022-11-16 10:54:06,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:06" (1/1) ... [2022-11-16 10:54:06,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:54:06,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:54:07,062 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-11-16 10:54:07,076 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:07,079 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:07,079 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:07,080 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:07,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:07,154 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:54:07,210 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-11-16 10:54:07,224 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:07,225 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:07,226 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:07,228 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 10:54:07,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:07,313 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:54:07,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:07 WrapperNode [2022-11-16 10:54:07,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:07,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:07,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:54:07,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:54:07,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:07" (1/1) ... [2022-11-16 10:54:07,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:07" (1/1) ... [2022-11-16 10:54:07,374 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 328 [2022-11-16 10:54:07,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:07,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:54:07,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:54:07,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:54:07,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:07" (1/1) ... [2022-11-16 10:54:07,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:07" (1/1) ... [2022-11-16 10:54:07,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:07" (1/1) ... [2022-11-16 10:54:07,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:07" (1/1) ... [2022-11-16 10:54:07,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:07" (1/1) ... [2022-11-16 10:54:07,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:07" (1/1) ... [2022-11-16 10:54:07,414 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:07" (1/1) ... [2022-11-16 10:54:07,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:07" (1/1) ... [2022-11-16 10:54:07,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:54:07,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:54:07,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:54:07,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:54:07,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:07" (1/1) ... [2022-11-16 10:54:07,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:07,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:07,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:54:07,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:54:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:54:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 10:54:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-16 10:54:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-16 10:54:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:54:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 10:54:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-16 10:54:07,535 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-16 10:54:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:54:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 10:54:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 10:54:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:54:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 10:54:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:54:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:54:07,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:54:07,538 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 10:54:07,739 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:54:07,741 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:54:08,368 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:54:08,379 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:54:08,379 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2022-11-16 10:54:08,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:08 BoogieIcfgContainer [2022-11-16 10:54:08,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:54:08,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:54:08,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:54:08,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:54:08,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:54:06" (1/3) ... [2022-11-16 10:54:08,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b605295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:08, skipping insertion in model container [2022-11-16 10:54:08,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:07" (2/3) ... [2022-11-16 10:54:08,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b605295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:08, skipping insertion in model container [2022-11-16 10:54:08,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:08" (3/3) ... [2022-11-16 10:54:08,392 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2022-11-16 10:54:08,400 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 10:54:08,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:54:08,411 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-16 10:54:08,412 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 10:54:08,572 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 10:54:08,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 372 transitions, 766 flow [2022-11-16 10:54:08,820 INFO L130 PetriNetUnfolder]: 77/603 cut-off events. [2022-11-16 10:54:08,820 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-11-16 10:54:08,835 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 3096 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. [2022-11-16 10:54:08,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 372 transitions, 766 flow [2022-11-16 10:54:08,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 372 transitions, 766 flow [2022-11-16 10:54:08,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:54:08,864 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;@36551357, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:54:08,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-11-16 10:54:08,876 INFO L130 PetriNetUnfolder]: 6/75 cut-off events. [2022-11-16 10:54:08,876 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 10:54:08,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:08,877 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] [2022-11-16 10:54:08,877 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)] === [2022-11-16 10:54:08,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:08,883 INFO L85 PathProgramCache]: Analyzing trace with hash 193129635, now seen corresponding path program 1 times [2022-11-16 10:54:08,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:08,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434042833] [2022-11-16 10:54:08,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:08,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:09,048 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:09,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102011663] [2022-11-16 10:54:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:09,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:09,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:09,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:09,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 10:54:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:09,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:54:09,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:09,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:09,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:09,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434042833] [2022-11-16 10:54:09,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:09,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102011663] [2022-11-16 10:54:09,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102011663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:09,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:09,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 10:54:09,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935305966] [2022-11-16 10:54:09,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:09,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:54:09,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:09,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:54:09,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:54:09,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 372 [2022-11-16 10:54:09,339 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) [2022-11-16 10:54:09,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:09,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 372 [2022-11-16 10:54:09,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:09,570 INFO L130 PetriNetUnfolder]: 20/602 cut-off events. [2022-11-16 10:54:09,570 INFO L131 PetriNetUnfolder]: For 37/46 co-relation queries the response was YES. [2022-11-16 10:54:09,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 602 events. 20/602 cut-off events. For 37/46 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3078 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. [2022-11-16 10:54:09,583 INFO L137 encePairwiseOnDemand]: 333/372 looper letters, 27 selfloop transitions, 2 changer transitions 0/345 dead transitions. [2022-11-16 10:54:09,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 345 transitions, 770 flow [2022-11-16 10:54:09,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:54:09,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 10:54:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2022-11-16 10:54:09,606 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.910394265232975 [2022-11-16 10:54:09,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2022-11-16 10:54:09,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2022-11-16 10:54:09,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:09,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2022-11-16 10:54:09,621 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) [2022-11-16 10:54:09,630 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) [2022-11-16 10:54:09,631 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) [2022-11-16 10:54:09,633 INFO L175 Difference]: Start difference. First operand has 331 places, 372 transitions, 766 flow. Second operand 3 states and 1016 transitions. [2022-11-16 10:54:09,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 345 transitions, 770 flow [2022-11-16 10:54:09,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 345 transitions, 770 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 10:54:09,654 INFO L231 Difference]: Finished difference. Result has 332 places, 337 transitions, 710 flow [2022-11-16 10:54:09,657 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} [2022-11-16 10:54:09,660 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 1 predicate places. [2022-11-16 10:54:09,661 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 337 transitions, 710 flow [2022-11-16 10:54:09,662 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) [2022-11-16 10:54:09,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:09,663 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] [2022-11-16 10:54:09,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:09,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:09,869 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)] === [2022-11-16 10:54:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:09,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1692050098, now seen corresponding path program 1 times [2022-11-16 10:54:09,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:09,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145358168] [2022-11-16 10:54:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:09,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:10,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:10,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145358168] [2022-11-16 10:54:10,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145358168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:10,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:10,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:10,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606792075] [2022-11-16 10:54:10,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:10,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:54:10,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:10,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:54:10,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:54:10,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 372 [2022-11-16 10:54:10,111 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) [2022-11-16 10:54:10,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:10,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 372 [2022-11-16 10:54:10,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:10,332 INFO L130 PetriNetUnfolder]: 20/686 cut-off events. [2022-11-16 10:54:10,333 INFO L131 PetriNetUnfolder]: For 38/47 co-relation queries the response was YES. [2022-11-16 10:54:10,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 686 events. 20/686 cut-off events. For 38/47 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3181 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. [2022-11-16 10:54:10,341 INFO L137 encePairwiseOnDemand]: 367/372 looper letters, 21 selfloop transitions, 2 changer transitions 0/343 dead transitions. [2022-11-16 10:54:10,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 343 transitions, 768 flow [2022-11-16 10:54:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:54:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 10:54:10,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2022-11-16 10:54:10,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8808243727598566 [2022-11-16 10:54:10,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2022-11-16 10:54:10,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2022-11-16 10:54:10,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:10,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2022-11-16 10:54:10,350 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) [2022-11-16 10:54:10,353 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) [2022-11-16 10:54:10,354 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) [2022-11-16 10:54:10,354 INFO L175 Difference]: Start difference. First operand has 332 places, 337 transitions, 710 flow. Second operand 3 states and 983 transitions. [2022-11-16 10:54:10,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 343 transitions, 768 flow [2022-11-16 10:54:10,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 343 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:10,365 INFO L231 Difference]: Finished difference. Result has 334 places, 338 transitions, 724 flow [2022-11-16 10:54:10,366 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} [2022-11-16 10:54:10,368 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 3 predicate places. [2022-11-16 10:54:10,369 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 338 transitions, 724 flow [2022-11-16 10:54:10,369 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) [2022-11-16 10:54:10,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:10,370 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:10,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:54:10,370 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)] === [2022-11-16 10:54:10,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:10,371 INFO L85 PathProgramCache]: Analyzing trace with hash -17929766, now seen corresponding path program 1 times [2022-11-16 10:54:10,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:10,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980842842] [2022-11-16 10:54:10,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:10,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:10,425 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:10,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297856835] [2022-11-16 10:54:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:10,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:10,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:10,436 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:10,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 10:54:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:10,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:54:10,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:10,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:10,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:10,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980842842] [2022-11-16 10:54:10,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:10,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297856835] [2022-11-16 10:54:10,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297856835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:10,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:10,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:10,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366588806] [2022-11-16 10:54:10,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:10,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:10,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:10,763 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-16 10:54:10,764 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) [2022-11-16 10:54:10,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:10,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-16 10:54:10,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:11,014 INFO L130 PetriNetUnfolder]: 20/686 cut-off events. [2022-11-16 10:54:11,014 INFO L131 PetriNetUnfolder]: For 45/54 co-relation queries the response was YES. [2022-11-16 10:54:11,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 686 events. 20/686 cut-off events. For 45/54 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3190 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. [2022-11-16 10:54:11,024 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 27 selfloop transitions, 5 changer transitions 0/347 dead transitions. [2022-11-16 10:54:11,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 347 transitions, 806 flow [2022-11-16 10:54:11,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:11,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:11,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1603 transitions. [2022-11-16 10:54:11,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8618279569892473 [2022-11-16 10:54:11,029 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1603 transitions. [2022-11-16 10:54:11,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1603 transitions. [2022-11-16 10:54:11,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:11,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1603 transitions. [2022-11-16 10:54:11,034 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) [2022-11-16 10:54:11,038 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) [2022-11-16 10:54:11,039 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) [2022-11-16 10:54:11,040 INFO L175 Difference]: Start difference. First operand has 334 places, 338 transitions, 724 flow. Second operand 5 states and 1603 transitions. [2022-11-16 10:54:11,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 347 transitions, 806 flow [2022-11-16 10:54:11,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 347 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:11,048 INFO L231 Difference]: Finished difference. Result has 341 places, 341 transitions, 756 flow [2022-11-16 10:54:11,049 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} [2022-11-16 10:54:11,051 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 10 predicate places. [2022-11-16 10:54:11,052 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 341 transitions, 756 flow [2022-11-16 10:54:11,053 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) [2022-11-16 10:54:11,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:11,053 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] [2022-11-16 10:54:11,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 10:54:11,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 10:54:11,259 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)] === [2022-11-16 10:54:11,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash -555821924, now seen corresponding path program 1 times [2022-11-16 10:54:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:11,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620781341] [2022-11-16 10:54:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:11,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:11,293 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:11,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997974099] [2022-11-16 10:54:11,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:11,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:11,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:11,295 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:11,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 10:54:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:11,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:54:11,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:11,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:11,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:11,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620781341] [2022-11-16 10:54:11,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:11,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997974099] [2022-11-16 10:54:11,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997974099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:11,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:11,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:11,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276066160] [2022-11-16 10:54:11,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:11,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:11,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:11,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:11,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:11,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-16 10:54:11,539 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) [2022-11-16 10:54:11,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:11,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-16 10:54:11,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:11,765 INFO L130 PetriNetUnfolder]: 20/682 cut-off events. [2022-11-16 10:54:11,765 INFO L131 PetriNetUnfolder]: For 67/76 co-relation queries the response was YES. [2022-11-16 10:54:11,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 682 events. 20/682 cut-off events. For 67/76 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3144 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. [2022-11-16 10:54:11,773 INFO L137 encePairwiseOnDemand]: 368/372 looper letters, 20 selfloop transitions, 5 changer transitions 0/340 dead transitions. [2022-11-16 10:54:11,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 340 transitions, 804 flow [2022-11-16 10:54:11,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:11,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:11,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1279 transitions. [2022-11-16 10:54:11,777 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595430107526881 [2022-11-16 10:54:11,777 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1279 transitions. [2022-11-16 10:54:11,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1279 transitions. [2022-11-16 10:54:11,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:11,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1279 transitions. [2022-11-16 10:54:11,781 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) [2022-11-16 10:54:11,784 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) [2022-11-16 10:54:11,785 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) [2022-11-16 10:54:11,785 INFO L175 Difference]: Start difference. First operand has 341 places, 341 transitions, 756 flow. Second operand 4 states and 1279 transitions. [2022-11-16 10:54:11,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 340 transitions, 804 flow [2022-11-16 10:54:11,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 340 transitions, 795 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 10:54:11,793 INFO L231 Difference]: Finished difference. Result has 341 places, 340 transitions, 758 flow [2022-11-16 10:54:11,793 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} [2022-11-16 10:54:11,794 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 10 predicate places. [2022-11-16 10:54:11,794 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 340 transitions, 758 flow [2022-11-16 10:54:11,795 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) [2022-11-16 10:54:11,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:11,795 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] [2022-11-16 10:54:11,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:12,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:12,001 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)] === [2022-11-16 10:54:12,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:12,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1116928528, now seen corresponding path program 1 times [2022-11-16 10:54:12,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:12,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865354018] [2022-11-16 10:54:12,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:12,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:12,026 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:12,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684356933] [2022-11-16 10:54:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:12,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:12,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:12,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:12,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 10:54:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:12,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:54:12,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:12,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:12,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:12,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865354018] [2022-11-16 10:54:12,352 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:12,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684356933] [2022-11-16 10:54:12,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684356933] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:12,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:54:12,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 10:54:12,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564175450] [2022-11-16 10:54:12,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:12,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:12,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:12,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:12,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-16 10:54:12,360 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) [2022-11-16 10:54:12,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:12,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-16 10:54:12,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:12,628 INFO L130 PetriNetUnfolder]: 20/768 cut-off events. [2022-11-16 10:54:12,629 INFO L131 PetriNetUnfolder]: For 83/92 co-relation queries the response was YES. [2022-11-16 10:54:12,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 768 events. 20/768 cut-off events. For 83/92 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2848 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. [2022-11-16 10:54:12,637 INFO L137 encePairwiseOnDemand]: 365/372 looper letters, 33 selfloop transitions, 10 changer transitions 0/358 dead transitions. [2022-11-16 10:54:12,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 358 transitions, 898 flow [2022-11-16 10:54:12,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:54:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 10:54:12,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2871 transitions. [2022-11-16 10:54:12,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8575268817204301 [2022-11-16 10:54:12,644 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2871 transitions. [2022-11-16 10:54:12,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2871 transitions. [2022-11-16 10:54:12,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:12,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2871 transitions. [2022-11-16 10:54:12,653 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) [2022-11-16 10:54:12,659 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) [2022-11-16 10:54:12,661 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) [2022-11-16 10:54:12,661 INFO L175 Difference]: Start difference. First operand has 341 places, 340 transitions, 758 flow. Second operand 9 states and 2871 transitions. [2022-11-16 10:54:12,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 358 transitions, 898 flow [2022-11-16 10:54:12,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 358 transitions, 885 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:54:12,669 INFO L231 Difference]: Finished difference. Result has 352 places, 344 transitions, 808 flow [2022-11-16 10:54:12,669 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} [2022-11-16 10:54:12,670 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 21 predicate places. [2022-11-16 10:54:12,670 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 344 transitions, 808 flow [2022-11-16 10:54:12,671 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) [2022-11-16 10:54:12,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:12,672 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] [2022-11-16 10:54:12,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:12,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:12,883 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)] === [2022-11-16 10:54:12,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:12,883 INFO L85 PathProgramCache]: Analyzing trace with hash -239512550, now seen corresponding path program 1 times [2022-11-16 10:54:12,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:12,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157522999] [2022-11-16 10:54:12,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:12,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:12,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:12,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269016679] [2022-11-16 10:54:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:12,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:12,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:12,928 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:12,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 10:54:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:13,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:54:13,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:13,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:13,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:13,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157522999] [2022-11-16 10:54:13,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:13,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269016679] [2022-11-16 10:54:13,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269016679] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:13,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:54:13,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 10:54:13,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890098807] [2022-11-16 10:54:13,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:13,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 10:54:13,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:13,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 10:54:13,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-16 10:54:13,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-16 10:54:13,639 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) [2022-11-16 10:54:13,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:13,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-16 10:54:13,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:14,121 INFO L130 PetriNetUnfolder]: 39/1328 cut-off events. [2022-11-16 10:54:14,121 INFO L131 PetriNetUnfolder]: For 196/214 co-relation queries the response was YES. [2022-11-16 10:54:14,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 1328 events. 39/1328 cut-off events. For 196/214 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6525 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. [2022-11-16 10:54:14,136 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 45 selfloop transitions, 16 changer transitions 0/376 dead transitions. [2022-11-16 10:54:14,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 376 transitions, 1060 flow [2022-11-16 10:54:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 10:54:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 10:54:14,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4773 transitions. [2022-11-16 10:54:14,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8553763440860215 [2022-11-16 10:54:14,147 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4773 transitions. [2022-11-16 10:54:14,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4773 transitions. [2022-11-16 10:54:14,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:14,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4773 transitions. [2022-11-16 10:54:14,159 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) [2022-11-16 10:54:14,168 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) [2022-11-16 10:54:14,171 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) [2022-11-16 10:54:14,171 INFO L175 Difference]: Start difference. First operand has 352 places, 344 transitions, 808 flow. Second operand 15 states and 4773 transitions. [2022-11-16 10:54:14,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 376 transitions, 1060 flow [2022-11-16 10:54:14,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 376 transitions, 1042 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:14,180 INFO L231 Difference]: Finished difference. Result has 361 places, 348 transitions, 857 flow [2022-11-16 10:54:14,181 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} [2022-11-16 10:54:14,181 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 30 predicate places. [2022-11-16 10:54:14,182 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 348 transitions, 857 flow [2022-11-16 10:54:14,184 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) [2022-11-16 10:54:14,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:14,184 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] [2022-11-16 10:54:14,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:14,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 10:54:14,391 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)] === [2022-11-16 10:54:14,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:14,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1670430672, now seen corresponding path program 2 times [2022-11-16 10:54:14,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:14,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889519196] [2022-11-16 10:54:14,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:14,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:14,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:14,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648975280] [2022-11-16 10:54:14,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:54:14,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:14,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:14,430 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:14,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 10:54:14,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:54:14,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:54:14,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:54:14,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-16 10:54:14,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:14,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:14,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889519196] [2022-11-16 10:54:14,792 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:14,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648975280] [2022-11-16 10:54:14,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648975280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:14,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:14,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:14,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970153635] [2022-11-16 10:54:14,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:14,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:14,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:14,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:14,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:14,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 372 [2022-11-16 10:54:14,797 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) [2022-11-16 10:54:14,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:14,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 372 [2022-11-16 10:54:14,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:15,217 INFO L130 PetriNetUnfolder]: 39/1328 cut-off events. [2022-11-16 10:54:15,217 INFO L131 PetriNetUnfolder]: For 197/215 co-relation queries the response was YES. [2022-11-16 10:54:15,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1614 conditions, 1328 events. 39/1328 cut-off events. For 197/215 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6486 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. [2022-11-16 10:54:15,235 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 33 selfloop transitions, 5 changer transitions 0/360 dead transitions. [2022-11-16 10:54:15,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 360 transitions, 957 flow [2022-11-16 10:54:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1594 transitions. [2022-11-16 10:54:15,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8569892473118279 [2022-11-16 10:54:15,240 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1594 transitions. [2022-11-16 10:54:15,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1594 transitions. [2022-11-16 10:54:15,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:15,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1594 transitions. [2022-11-16 10:54:15,244 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) [2022-11-16 10:54:15,247 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) [2022-11-16 10:54:15,248 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) [2022-11-16 10:54:15,248 INFO L175 Difference]: Start difference. First operand has 361 places, 348 transitions, 857 flow. Second operand 5 states and 1594 transitions. [2022-11-16 10:54:15,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 360 transitions, 957 flow [2022-11-16 10:54:15,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 360 transitions, 898 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-16 10:54:15,256 INFO L231 Difference]: Finished difference. Result has 356 places, 351 transitions, 832 flow [2022-11-16 10:54:15,257 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} [2022-11-16 10:54:15,257 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 25 predicate places. [2022-11-16 10:54:15,257 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 351 transitions, 832 flow [2022-11-16 10:54:15,258 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) [2022-11-16 10:54:15,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:15,258 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] [2022-11-16 10:54:15,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:15,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:15,466 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)] === [2022-11-16 10:54:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:15,467 INFO L85 PathProgramCache]: Analyzing trace with hash -243742407, now seen corresponding path program 1 times [2022-11-16 10:54:15,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:15,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049376393] [2022-11-16 10:54:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:15,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:15,501 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:15,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455678485] [2022-11-16 10:54:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:15,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:15,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:15,503 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:15,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 10:54:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:15,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:54:15,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:16,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:16,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:16,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049376393] [2022-11-16 10:54:16,282 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:16,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455678485] [2022-11-16 10:54:16,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455678485] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:16,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:54:16,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 10:54:16,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199779985] [2022-11-16 10:54:16,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:16,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 10:54:16,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:16,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 10:54:16,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 10:54:16,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-16 10:54:16,293 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) [2022-11-16 10:54:16,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:16,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-16 10:54:16,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:16,874 INFO L130 PetriNetUnfolder]: 20/1102 cut-off events. [2022-11-16 10:54:16,874 INFO L131 PetriNetUnfolder]: For 153/162 co-relation queries the response was YES. [2022-11-16 10:54:16,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 1102 events. 20/1102 cut-off events. For 153/162 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2824 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. [2022-11-16 10:54:16,882 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 64 selfloop transitions, 22 changer transitions 0/404 dead transitions. [2022-11-16 10:54:16,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 404 transitions, 1197 flow [2022-11-16 10:54:16,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 10:54:16,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 10:54:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6683 transitions. [2022-11-16 10:54:16,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.855478750640041 [2022-11-16 10:54:16,896 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6683 transitions. [2022-11-16 10:54:16,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6683 transitions. [2022-11-16 10:54:16,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:16,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6683 transitions. [2022-11-16 10:54:16,912 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) [2022-11-16 10:54:16,924 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) [2022-11-16 10:54:16,927 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) [2022-11-16 10:54:16,927 INFO L175 Difference]: Start difference. First operand has 356 places, 351 transitions, 832 flow. Second operand 21 states and 6683 transitions. [2022-11-16 10:54:16,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 404 transitions, 1197 flow [2022-11-16 10:54:16,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 404 transitions, 1187 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:16,936 INFO L231 Difference]: Finished difference. Result has 380 places, 360 transitions, 942 flow [2022-11-16 10:54:16,936 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} [2022-11-16 10:54:16,937 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 49 predicate places. [2022-11-16 10:54:16,937 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 360 transitions, 942 flow [2022-11-16 10:54:16,939 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) [2022-11-16 10:54:16,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:16,939 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] [2022-11-16 10:54:16,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:17,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:17,146 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)] === [2022-11-16 10:54:17,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:17,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1614091449, now seen corresponding path program 2 times [2022-11-16 10:54:17,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:17,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295826343] [2022-11-16 10:54:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:17,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:17,216 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:17,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74817825] [2022-11-16 10:54:17,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:54:17,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:17,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:17,217 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:17,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 10:54:17,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:54:17,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:54:17,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:54:17,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-16 10:54:18,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:18,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:18,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295826343] [2022-11-16 10:54:18,033 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:18,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74817825] [2022-11-16 10:54:18,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74817825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:18,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:18,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:18,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411723965] [2022-11-16 10:54:18,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:18,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:18,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:18,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:18,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:18,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 372 [2022-11-16 10:54:18,041 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) [2022-11-16 10:54:18,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:18,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 372 [2022-11-16 10:54:18,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:18,371 INFO L130 PetriNetUnfolder]: 20/1100 cut-off events. [2022-11-16 10:54:18,372 INFO L131 PetriNetUnfolder]: For 217/226 co-relation queries the response was YES. [2022-11-16 10:54:18,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 1100 events. 20/1100 cut-off events. For 217/226 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2821 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. [2022-11-16 10:54:18,382 INFO L137 encePairwiseOnDemand]: 368/372 looper letters, 22 selfloop transitions, 5 changer transitions 0/358 dead transitions. [2022-11-16 10:54:18,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 358 transitions, 986 flow [2022-11-16 10:54:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:18,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1269 transitions. [2022-11-16 10:54:18,385 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8528225806451613 [2022-11-16 10:54:18,385 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1269 transitions. [2022-11-16 10:54:18,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1269 transitions. [2022-11-16 10:54:18,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:18,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1269 transitions. [2022-11-16 10:54:18,389 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) [2022-11-16 10:54:18,392 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) [2022-11-16 10:54:18,392 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) [2022-11-16 10:54:18,392 INFO L175 Difference]: Start difference. First operand has 380 places, 360 transitions, 942 flow. Second operand 4 states and 1269 transitions. [2022-11-16 10:54:18,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 358 transitions, 986 flow [2022-11-16 10:54:18,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 358 transitions, 963 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-16 10:54:18,401 INFO L231 Difference]: Finished difference. Result has 371 places, 358 transitions, 919 flow [2022-11-16 10:54:18,401 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} [2022-11-16 10:54:18,402 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 40 predicate places. [2022-11-16 10:54:18,402 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 358 transitions, 919 flow [2022-11-16 10:54:18,403 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) [2022-11-16 10:54:18,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:18,403 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] [2022-11-16 10:54:18,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 10:54:18,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 10:54:18,609 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)] === [2022-11-16 10:54:18,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:18,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1333580358, now seen corresponding path program 1 times [2022-11-16 10:54:18,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:18,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892990990] [2022-11-16 10:54:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:18,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:18,684 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:18,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331415713] [2022-11-16 10:54:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:18,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:18,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:18,685 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:18,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 10:54:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:19,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 10:54:19,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:19,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:20,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:20,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892990990] [2022-11-16 10:54:20,389 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:20,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331415713] [2022-11-16 10:54:20,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331415713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:20,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:54:20,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-16 10:54:20,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757573383] [2022-11-16 10:54:20,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:20,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 10:54:20,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:20,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 10:54:20,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-16 10:54:20,402 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-16 10:54:20,411 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) [2022-11-16 10:54:20,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:20,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-16 10:54:20,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:21,827 INFO L130 PetriNetUnfolder]: 20/1772 cut-off events. [2022-11-16 10:54:21,828 INFO L131 PetriNetUnfolder]: For 762/771 co-relation queries the response was YES. [2022-11-16 10:54:21,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 1772 events. 20/1772 cut-off events. For 762/771 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2862 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. [2022-11-16 10:54:21,838 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 128 selfloop transitions, 46 changer transitions 0/490 dead transitions. [2022-11-16 10:54:21,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 490 transitions, 1863 flow [2022-11-16 10:54:21,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 10:54:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 10:54:21,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 14311 transitions. [2022-11-16 10:54:21,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8548984468339307 [2022-11-16 10:54:21,863 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 14311 transitions. [2022-11-16 10:54:21,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 14311 transitions. [2022-11-16 10:54:21,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:21,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 14311 transitions. [2022-11-16 10:54:21,899 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) [2022-11-16 10:54:21,926 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) [2022-11-16 10:54:21,932 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) [2022-11-16 10:54:21,932 INFO L175 Difference]: Start difference. First operand has 371 places, 358 transitions, 919 flow. Second operand 45 states and 14311 transitions. [2022-11-16 10:54:21,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 490 transitions, 1863 flow [2022-11-16 10:54:21,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 490 transitions, 1853 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 10:54:21,944 INFO L231 Difference]: Finished difference. Result has 421 places, 383 transitions, 1232 flow [2022-11-16 10:54:21,944 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} [2022-11-16 10:54:21,945 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 90 predicate places. [2022-11-16 10:54:21,945 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 383 transitions, 1232 flow [2022-11-16 10:54:21,948 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) [2022-11-16 10:54:21,948 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:21,949 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] [2022-11-16 10:54:21,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:22,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 10:54:22,156 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)] === [2022-11-16 10:54:22,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash 271598778, now seen corresponding path program 2 times [2022-11-16 10:54:22,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:22,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459508161] [2022-11-16 10:54:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:22,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:22,286 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:22,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074584505] [2022-11-16 10:54:22,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:54:22,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:22,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:22,288 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:22,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 10:54:22,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:54:22,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:54:22,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:54:22,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2022-11-16 10:54:22,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:22,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:22,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459508161] [2022-11-16 10:54:22,855 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:22,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074584505] [2022-11-16 10:54:22,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074584505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:22,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:22,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:22,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969047081] [2022-11-16 10:54:22,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:22,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:22,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:22,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:22,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:22,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 372 [2022-11-16 10:54:22,862 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) [2022-11-16 10:54:22,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:22,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 372 [2022-11-16 10:54:22,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:23,457 INFO L130 PetriNetUnfolder]: 15/1656 cut-off events. [2022-11-16 10:54:23,458 INFO L131 PetriNetUnfolder]: For 757/770 co-relation queries the response was YES. [2022-11-16 10:54:23,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2294 conditions, 1656 events. 15/1656 cut-off events. For 757/770 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2040 event pairs, 0 based on Foata normal form. 3/1609 useless extension candidates. Maximal degree in co-relation 2076. Up to 38 conditions per place. [2022-11-16 10:54:23,468 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 15 selfloop transitions, 4 changer transitions 0/384 dead transitions. [2022-11-16 10:54:23,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 384 transitions, 1272 flow [2022-11-16 10:54:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1611 transitions. [2022-11-16 10:54:23,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8661290322580645 [2022-11-16 10:54:23,472 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1611 transitions. [2022-11-16 10:54:23,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1611 transitions. [2022-11-16 10:54:23,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:23,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1611 transitions. [2022-11-16 10:54:23,476 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) [2022-11-16 10:54:23,479 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) [2022-11-16 10:54:23,479 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) [2022-11-16 10:54:23,480 INFO L175 Difference]: Start difference. First operand has 421 places, 383 transitions, 1232 flow. Second operand 5 states and 1611 transitions. [2022-11-16 10:54:23,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 384 transitions, 1272 flow [2022-11-16 10:54:23,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 384 transitions, 1215 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-16 10:54:23,493 INFO L231 Difference]: Finished difference. Result has 407 places, 382 transitions, 1185 flow [2022-11-16 10:54:23,494 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} [2022-11-16 10:54:23,494 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 76 predicate places. [2022-11-16 10:54:23,494 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 382 transitions, 1185 flow [2022-11-16 10:54:23,495 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) [2022-11-16 10:54:23,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:23,495 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] [2022-11-16 10:54:23,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:23,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 10:54:23,701 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)] === [2022-11-16 10:54:23,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:23,702 INFO L85 PathProgramCache]: Analyzing trace with hash -170371692, now seen corresponding path program 1 times [2022-11-16 10:54:23,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:23,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622709330] [2022-11-16 10:54:23,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:23,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:23,812 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:23,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695373354] [2022-11-16 10:54:23,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:23,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:23,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:23,814 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:23,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 10:54:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:24,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 10:54:24,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:26,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:27,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:27,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622709330] [2022-11-16 10:54:27,807 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:27,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695373354] [2022-11-16 10:54:27,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695373354] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:27,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:54:27,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-16 10:54:27,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36620461] [2022-11-16 10:54:27,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:27,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-16 10:54:27,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:27,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-16 10:54:27,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 10:54:27,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 372 [2022-11-16 10:54:27,846 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) [2022-11-16 10:54:27,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:27,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 372 [2022-11-16 10:54:27,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:31,564 INFO L130 PetriNetUnfolder]: 15/2916 cut-off events. [2022-11-16 10:54:31,564 INFO L131 PetriNetUnfolder]: For 4974/4978 co-relation queries the response was YES. [2022-11-16 10:54:31,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4698 conditions, 2916 events. 15/2916 cut-off events. For 4974/4978 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2092 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. [2022-11-16 10:54:31,576 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 248 selfloop transitions, 91 changer transitions 0/654 dead transitions. [2022-11-16 10:54:31,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 654 transitions, 3275 flow [2022-11-16 10:54:31,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-16 10:54:31,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-16 10:54:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 28613 transitions. [2022-11-16 10:54:31,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8546296296296296 [2022-11-16 10:54:31,615 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 28613 transitions. [2022-11-16 10:54:31,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 28613 transitions. [2022-11-16 10:54:31,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:31,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 28613 transitions. [2022-11-16 10:54:31,662 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) [2022-11-16 10:54:31,698 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) [2022-11-16 10:54:31,705 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) [2022-11-16 10:54:31,705 INFO L175 Difference]: Start difference. First operand has 407 places, 382 transitions, 1185 flow. Second operand 90 states and 28613 transitions. [2022-11-16 10:54:31,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 654 transitions, 3275 flow [2022-11-16 10:54:31,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 654 transitions, 3267 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:31,728 INFO L231 Difference]: Finished difference. Result has 508 places, 428 transitions, 1866 flow [2022-11-16 10:54:31,728 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} [2022-11-16 10:54:31,729 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 177 predicate places. [2022-11-16 10:54:31,729 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 428 transitions, 1866 flow [2022-11-16 10:54:31,732 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) [2022-11-16 10:54:31,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:31,733 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] [2022-11-16 10:54:31,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:31,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 10:54:31,943 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)] === [2022-11-16 10:54:31,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:31,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2068518102, now seen corresponding path program 2 times [2022-11-16 10:54:31,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:31,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577378727] [2022-11-16 10:54:31,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:31,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:32,205 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:32,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222807258] [2022-11-16 10:54:32,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:54:32,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:32,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:32,210 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:32,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 10:54:33,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:54:33,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:54:33,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 10:54:33,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-16 10:54:33,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:33,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:33,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577378727] [2022-11-16 10:54:33,116 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:33,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222807258] [2022-11-16 10:54:33,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222807258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:33,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:33,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:33,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066245025] [2022-11-16 10:54:33,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:33,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:33,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:33,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:33,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:33,121 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 372 [2022-11-16 10:54:33,122 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) [2022-11-16 10:54:33,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:33,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 372 [2022-11-16 10:54:33,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:34,715 INFO L130 PetriNetUnfolder]: 15/2915 cut-off events. [2022-11-16 10:54:34,715 INFO L131 PetriNetUnfolder]: For 2984/2996 co-relation queries the response was YES. [2022-11-16 10:54:34,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4393 conditions, 2915 events. 15/2915 cut-off events. For 2984/2996 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2078 event pairs, 0 based on Foata normal form. 1/2868 useless extension candidates. Maximal degree in co-relation 4158. Up to 96 conditions per place. [2022-11-16 10:54:34,727 INFO L137 encePairwiseOnDemand]: 368/372 looper letters, 13 selfloop transitions, 3 changer transitions 0/427 dead transitions. [2022-11-16 10:54:34,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 427 transitions, 1896 flow [2022-11-16 10:54:34,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1289 transitions. [2022-11-16 10:54:34,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.866263440860215 [2022-11-16 10:54:34,729 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1289 transitions. [2022-11-16 10:54:34,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1289 transitions. [2022-11-16 10:54:34,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:34,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1289 transitions. [2022-11-16 10:54:34,732 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) [2022-11-16 10:54:34,734 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) [2022-11-16 10:54:34,735 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) [2022-11-16 10:54:34,735 INFO L175 Difference]: Start difference. First operand has 508 places, 428 transitions, 1866 flow. Second operand 4 states and 1289 transitions. [2022-11-16 10:54:34,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 427 transitions, 1896 flow [2022-11-16 10:54:34,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 427 transitions, 1777 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-16 10:54:34,771 INFO L231 Difference]: Finished difference. Result has 468 places, 427 transitions, 1751 flow [2022-11-16 10:54:34,772 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} [2022-11-16 10:54:34,772 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 137 predicate places. [2022-11-16 10:54:34,773 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 427 transitions, 1751 flow [2022-11-16 10:54:34,773 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) [2022-11-16 10:54:34,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:34,774 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] [2022-11-16 10:54:34,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:34,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 10:54:34,980 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)] === [2022-11-16 10:54:34,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:34,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2059074967, now seen corresponding path program 1 times [2022-11-16 10:54:34,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:34,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803964582] [2022-11-16 10:54:34,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:34,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:35,249 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:35,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199172767] [2022-11-16 10:54:35,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:35,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:35,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:35,250 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:35,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 10:54:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:36,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 5187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:54:36,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-16 10:54:38,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-16 10:54:40,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:40,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803964582] [2022-11-16 10:54:40,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:40,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199172767] [2022-11-16 10:54:40,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199172767] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:40,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:54:40,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 10:54:40,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489566623] [2022-11-16 10:54:40,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:40,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:40,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:40,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:40,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:40,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 372 [2022-11-16 10:54:40,193 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) [2022-11-16 10:54:40,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:40,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 372 [2022-11-16 10:54:40,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:43,298 INFO L130 PetriNetUnfolder]: 16/4221 cut-off events. [2022-11-16 10:54:43,298 INFO L131 PetriNetUnfolder]: For 4637/4641 co-relation queries the response was YES. [2022-11-16 10:54:43,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6772 conditions, 4221 events. 16/4221 cut-off events. For 4637/4641 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1774 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. [2022-11-16 10:54:43,312 INFO L137 encePairwiseOnDemand]: 365/372 looper letters, 42 selfloop transitions, 9 changer transitions 0/451 dead transitions. [2022-11-16 10:54:43,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 451 transitions, 1915 flow [2022-11-16 10:54:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:54:43,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 10:54:43,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2853 transitions. [2022-11-16 10:54:43,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8521505376344086 [2022-11-16 10:54:43,316 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2853 transitions. [2022-11-16 10:54:43,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2853 transitions. [2022-11-16 10:54:43,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:43,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2853 transitions. [2022-11-16 10:54:43,321 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) [2022-11-16 10:54:43,324 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) [2022-11-16 10:54:43,325 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) [2022-11-16 10:54:43,325 INFO L175 Difference]: Start difference. First operand has 468 places, 427 transitions, 1751 flow. Second operand 9 states and 2853 transitions. [2022-11-16 10:54:43,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 451 transitions, 1915 flow [2022-11-16 10:54:43,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 451 transitions, 1909 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 10:54:43,361 INFO L231 Difference]: Finished difference. Result has 478 places, 431 transitions, 1801 flow [2022-11-16 10:54:43,362 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} [2022-11-16 10:54:43,362 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 147 predicate places. [2022-11-16 10:54:43,362 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 431 transitions, 1801 flow [2022-11-16 10:54:43,363 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) [2022-11-16 10:54:43,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:43,364 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] [2022-11-16 10:54:43,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:43,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:43,578 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)] === [2022-11-16 10:54:43,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:43,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2008241645, now seen corresponding path program 1 times [2022-11-16 10:54:43,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:43,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784238185] [2022-11-16 10:54:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:43,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:43,778 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:43,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590397646] [2022-11-16 10:54:43,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:43,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:43,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:43,780 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:43,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 10:54:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:49,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 5333 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 10:54:49,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 10:54:51,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 10:54:53,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:53,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784238185] [2022-11-16 10:54:53,214 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:54:53,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590397646] [2022-11-16 10:54:53,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590397646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:53,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:54:53,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 10:54:53,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247112551] [2022-11-16 10:54:53,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:53,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 10:54:53,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:53,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 10:54:53,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-16 10:54:53,221 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 372 [2022-11-16 10:54:53,223 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) [2022-11-16 10:54:53,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:53,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 372 [2022-11-16 10:54:53,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:56,577 INFO L130 PetriNetUnfolder]: 16/4189 cut-off events. [2022-11-16 10:54:56,577 INFO L131 PetriNetUnfolder]: For 4825/4829 co-relation queries the response was YES. [2022-11-16 10:54:56,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 4189 events. 16/4189 cut-off events. For 4825/4829 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1625 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. [2022-11-16 10:54:56,590 INFO L137 encePairwiseOnDemand]: 358/372 looper letters, 228 selfloop transitions, 144 changer transitions 0/671 dead transitions. [2022-11-16 10:54:56,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 671 transitions, 4669 flow [2022-11-16 10:54:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 10:54:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 10:54:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7331 transitions. [2022-11-16 10:54:56,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8211245519713262 [2022-11-16 10:54:56,598 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7331 transitions. [2022-11-16 10:54:56,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7331 transitions. [2022-11-16 10:54:56,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:56,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7331 transitions. [2022-11-16 10:54:56,610 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) [2022-11-16 10:54:56,619 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) [2022-11-16 10:54:56,621 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) [2022-11-16 10:54:56,621 INFO L175 Difference]: Start difference. First operand has 478 places, 431 transitions, 1801 flow. Second operand 24 states and 7331 transitions. [2022-11-16 10:54:56,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 671 transitions, 4669 flow [2022-11-16 10:54:56,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 671 transitions, 4653 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:56,664 INFO L231 Difference]: Finished difference. Result has 502 places, 562 transitions, 3840 flow [2022-11-16 10:54:56,665 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} [2022-11-16 10:54:56,666 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 171 predicate places. [2022-11-16 10:54:56,666 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 562 transitions, 3840 flow [2022-11-16 10:54:56,667 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) [2022-11-16 10:54:56,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:56,667 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] [2022-11-16 10:54:56,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:56,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 10:54:56,882 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)] === [2022-11-16 10:54:56,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:56,882 INFO L85 PathProgramCache]: Analyzing trace with hash 150223635, now seen corresponding path program 1 times [2022-11-16 10:54:56,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:56,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201192798] [2022-11-16 10:54:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:56,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:57,088 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:54:57,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651435115] [2022-11-16 10:54:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:57,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:57,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:57,090 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:57,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 10:55:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:07,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 5501 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 10:55:07,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2610 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 10:55:09,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:09,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:09,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201192798] [2022-11-16 10:55:09,431 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:09,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651435115] [2022-11-16 10:55:09,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651435115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:09,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:09,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 10:55:09,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705037979] [2022-11-16 10:55:09,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:09,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 10:55:09,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:09,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 10:55:09,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-16 10:55:09,436 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 372 [2022-11-16 10:55:09,438 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) [2022-11-16 10:55:09,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:09,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 372 [2022-11-16 10:55:09,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:12,663 INFO L130 PetriNetUnfolder]: 16/4132 cut-off events. [2022-11-16 10:55:12,664 INFO L131 PetriNetUnfolder]: For 7164/7168 co-relation queries the response was YES. [2022-11-16 10:55:12,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7689 conditions, 4132 events. 16/4132 cut-off events. For 7164/7168 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1542 event pairs, 0 based on Foata normal form. 57/4141 useless extension candidates. Maximal degree in co-relation 7443. Up to 310 conditions per place. [2022-11-16 10:55:12,683 INFO L137 encePairwiseOnDemand]: 362/372 looper letters, 151 selfloop transitions, 202 changer transitions 0/652 dead transitions. [2022-11-16 10:55:12,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 652 transitions, 5332 flow [2022-11-16 10:55:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 10:55:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 10:55:12,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4891 transitions. [2022-11-16 10:55:12,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8217405913978495 [2022-11-16 10:55:12,691 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4891 transitions. [2022-11-16 10:55:12,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4891 transitions. [2022-11-16 10:55:12,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:12,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4891 transitions. [2022-11-16 10:55:12,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 305.6875) internal successors, (4891), 16 states have internal predecessors, (4891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:12,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:12,711 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:12,711 INFO L175 Difference]: Start difference. First operand has 502 places, 562 transitions, 3840 flow. Second operand 16 states and 4891 transitions. [2022-11-16 10:55:12,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 652 transitions, 5332 flow [2022-11-16 10:55:12,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 652 transitions, 5300 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-16 10:55:12,779 INFO L231 Difference]: Finished difference. Result has 510 places, 624 transitions, 5255 flow [2022-11-16 10:55:12,780 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=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5255, PETRI_PLACES=510, PETRI_TRANSITIONS=624} [2022-11-16 10:55:12,780 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 179 predicate places. [2022-11-16 10:55:12,780 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 624 transitions, 5255 flow [2022-11-16 10:55:12,781 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) [2022-11-16 10:55:12,781 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:12,782 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] [2022-11-16 10:55:12,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:12,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:12,998 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)] === [2022-11-16 10:55:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:12,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1663053395, now seen corresponding path program 2 times [2022-11-16 10:55:12,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:12,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547927225] [2022-11-16 10:55:12,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:12,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:13,456 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:55:13,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435406720] [2022-11-16 10:55:13,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:55:13,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:13,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:13,458 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:13,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 10:55:54,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:55:54,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:54,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 10560 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:55:54,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:57,998 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 42044 proven. 0 refuted. 0 times theorem prover too weak. 35773 trivial. 0 not checked. [2022-11-16 10:55:57,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:57,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:57,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547927225] [2022-11-16 10:55:57,999 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:55:57,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435406720] [2022-11-16 10:55:58,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435406720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:58,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:55:58,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 10:55:58,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037880809] [2022-11-16 10:55:58,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:58,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 10:55:58,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:58,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 10:55:58,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 10:55:58,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 372 [2022-11-16 10:55:58,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 624 transitions, 5255 flow. Second operand has 9 states, 9 states have (on average 311.44444444444446) internal successors, (2803), 9 states have internal predecessors, (2803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:58,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:58,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 372 [2022-11-16 10:55:58,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:56:01,607 INFO L130 PetriNetUnfolder]: 16/4104 cut-off events. [2022-11-16 10:56:01,607 INFO L131 PetriNetUnfolder]: For 10766/10770 co-relation queries the response was YES. [2022-11-16 10:56:01,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7727 conditions, 4104 events. 16/4104 cut-off events. For 10766/10770 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1481 event pairs, 0 based on Foata normal form. 28/4084 useless extension candidates. Maximal degree in co-relation 7479. Up to 217 conditions per place. [2022-11-16 10:56:01,619 INFO L137 encePairwiseOnDemand]: 363/372 looper letters, 204 selfloop transitions, 50 changer transitions 0/645 dead transitions. [2022-11-16 10:56:01,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 645 transitions, 5941 flow [2022-11-16 10:56:01,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 10:56:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 10:56:01,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3733 transitions. [2022-11-16 10:56:01,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8362455197132617 [2022-11-16 10:56:01,624 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3733 transitions. [2022-11-16 10:56:01,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3733 transitions. [2022-11-16 10:56:01,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:56:01,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3733 transitions. [2022-11-16 10:56:01,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 311.0833333333333) internal successors, (3733), 12 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:01,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 372.0) internal successors, (4836), 13 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:01,642 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 372.0) internal successors, (4836), 13 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:01,642 INFO L175 Difference]: Start difference. First operand has 510 places, 624 transitions, 5255 flow. Second operand 12 states and 3733 transitions. [2022-11-16 10:56:01,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 645 transitions, 5941 flow [2022-11-16 10:56:01,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 645 transitions, 5751 flow, removed 67 selfloop flow, removed 10 redundant places. [2022-11-16 10:56:01,714 INFO L231 Difference]: Finished difference. Result has 511 places, 624 transitions, 5208 flow [2022-11-16 10:56:01,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=5059, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5208, PETRI_PLACES=511, PETRI_TRANSITIONS=624} [2022-11-16 10:56:01,715 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 180 predicate places. [2022-11-16 10:56:01,715 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 624 transitions, 5208 flow [2022-11-16 10:56:01,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 311.44444444444446) internal successors, (2803), 9 states have internal predecessors, (2803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:01,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:56:01,717 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] [2022-11-16 10:56:01,943 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2022-11-16 10:56:01,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:01,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 10:56:01,985 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)] === [2022-11-16 10:56:01,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:01,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1562762791, now seen corresponding path program 2 times [2022-11-16 10:56:01,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:01,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630180368] [2022-11-16 10:56:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:01,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:02,477 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:56:02,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452490677] [2022-11-16 10:56:02,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:56:02,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:02,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:02,483 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:02,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 10:56:07,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 10:56:07,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:56:07,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 15307 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 10:56:07,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:56:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-16 10:56:13,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:56:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-16 10:56:19,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:56:19,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630180368] [2022-11-16 10:56:19,037 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 10:56:19,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452490677] [2022-11-16 10:56:19,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452490677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:56:19,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 10:56:19,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 10:56:19,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902829414] [2022-11-16 10:56:19,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 10:56:19,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 10:56:19,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:56:19,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 10:56:19,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 10:56:19,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 372 [2022-11-16 10:56:19,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 624 transitions, 5208 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) [2022-11-16 10:56:19,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:56:19,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 372 [2022-11-16 10:56:19,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:56:32,078 INFO L130 PetriNetUnfolder]: 20/9092 cut-off events. [2022-11-16 10:56:32,078 INFO L131 PetriNetUnfolder]: For 24582/24586 co-relation queries the response was YES. [2022-11-16 10:56:32,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17205 conditions, 9092 events. 20/9092 cut-off events. For 24582/24586 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1490 event pairs, 0 based on Foata normal form. 4/9048 useless extension candidates. Maximal degree in co-relation 16957. Up to 336 conditions per place. [2022-11-16 10:56:32,102 INFO L137 encePairwiseOnDemand]: 366/372 looper letters, 78 selfloop transitions, 21 changer transitions 0/693 dead transitions. [2022-11-16 10:56:32,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 693 transitions, 5700 flow [2022-11-16 10:56:32,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 10:56:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 10:56:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6629 transitions. [2022-11-16 10:56:32,109 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8485663082437276 [2022-11-16 10:56:32,110 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6629 transitions. [2022-11-16 10:56:32,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6629 transitions. [2022-11-16 10:56:32,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:56:32,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6629 transitions. [2022-11-16 10:56:32,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 315.6666666666667) internal successors, (6629), 21 states have internal predecessors, (6629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:56:32,125 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) [2022-11-16 10:56:32,127 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) [2022-11-16 10:56:32,127 INFO L175 Difference]: Start difference. First operand has 511 places, 624 transitions, 5208 flow. Second operand 21 states and 6629 transitions. [2022-11-16 10:56:32,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 693 transitions, 5700 flow [2022-11-16 10:56:32,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 693 transitions, 5607 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-11-16 10:56:32,255 INFO L231 Difference]: Finished difference. Result has 526 places, 637 transitions, 5310 flow [2022-11-16 10:56:32,255 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=5139, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5310, PETRI_PLACES=526, PETRI_TRANSITIONS=637} [2022-11-16 10:56:32,256 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 195 predicate places. [2022-11-16 10:56:32,256 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 637 transitions, 5310 flow [2022-11-16 10:56:32,257 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) [2022-11-16 10:56:32,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:56:32,259 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] [2022-11-16 10:56:32,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 10:56:32,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 10:56:32,486 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 10:56:32,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:56:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash 413305017, now seen corresponding path program 3 times [2022-11-16 10:56:32,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:56:32,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184949943] [2022-11-16 10:56:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:56:32,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:56:33,860 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:56:33,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996331491] [2022-11-16 10:56:33,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 10:56:33,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:56:33,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:56:33,866 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:56:33,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_065e323f-371a-45b0-91cd-53028c6c8899/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process