./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro --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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- 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-8393723 [2022-11-18 18:34:48,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:34:48,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:34:48,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:34:48,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:34:48,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:34:48,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:34:48,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:34:48,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:34:48,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:34:48,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:34:48,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:34:48,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:34:48,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:34:48,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:34:48,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:34:48,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:34:48,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:34:48,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:34:48,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:34:48,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:34:48,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:34:48,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:34:48,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:34:48,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:34:48,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:34:48,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:34:48,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:34:48,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:34:48,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:34:48,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:34:48,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:34:48,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:34:48,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:34:48,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:34:48,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:34:48,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:34:48,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:34:48,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:34:48,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:34:48,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:34:48,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:34:48,379 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:34:48,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:34:48,380 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:34:48,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:34:48,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:34:48,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:34:48,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:34:48,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:34:48,382 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:34:48,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:34:48,382 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:34:48,383 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:34:48,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:34:48,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:34:48,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:34:48,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:34:48,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:34:48,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:34:48,384 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:34:48,387 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:34:48,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:34:48,388 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:34:48,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:34:48,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:34:48,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:34:48,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:34:48,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:34:48,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:34:48,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:34:48,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:34:48,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:34:48,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:34:48,391 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:34:48,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:34:48,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:34:48,392 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_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2022-11-18 18:34:48,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:34:48,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:34:48,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:34:48,681 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:34:48,683 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:34:48,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-18 18:34:48,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/data/db151d73a/523e587a5e4940e5a8b988791600bf62/FLAGe89547372 [2022-11-18 18:34:49,314 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:34:49,315 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-18 18:34:49,329 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/data/db151d73a/523e587a5e4940e5a8b988791600bf62/FLAGe89547372 [2022-11-18 18:34:49,609 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/data/db151d73a/523e587a5e4940e5a8b988791600bf62 [2022-11-18 18:34:49,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:34:49,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:34:49,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:34:49,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:34:49,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:34:49,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:34:49" (1/1) ... [2022-11-18 18:34:49,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c8baec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:49, skipping insertion in model container [2022-11-18 18:34:49,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:34:49" (1/1) ... [2022-11-18 18:34:49,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:34:49,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:34:50,166 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:34:50,166 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:34:50,169 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:34:50,171 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:34:50,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:34:50,237 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:34:50,296 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:34:50,296 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:34:50,297 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:34:50,297 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:34:50,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:34:50,401 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:34:50,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:50 WrapperNode [2022-11-18 18:34:50,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:34:50,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:34:50,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:34:50,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:34:50,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:50" (1/1) ... [2022-11-18 18:34:50,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:50" (1/1) ... [2022-11-18 18:34:50,477 INFO L138 Inliner]: procedures = 272, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 137 [2022-11-18 18:34:50,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:34:50,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:34:50,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:34:50,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:34:50,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:50" (1/1) ... [2022-11-18 18:34:50,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:50" (1/1) ... [2022-11-18 18:34:50,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:50" (1/1) ... [2022-11-18 18:34:50,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:50" (1/1) ... [2022-11-18 18:34:50,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:50" (1/1) ... [2022-11-18 18:34:50,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:50" (1/1) ... [2022-11-18 18:34:50,525 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:50" (1/1) ... [2022-11-18 18:34:50,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:50" (1/1) ... [2022-11-18 18:34:50,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:34:50,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:34:50,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:34:50,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:34:50,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:50" (1/1) ... [2022-11-18 18:34:50,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:34:50,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:50,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:34:50,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:34:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-18 18:34:50,612 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-18 18:34:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:34:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:34:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:34:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:34:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:34:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:34:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:34:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:34:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:34:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:34:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:34:50,615 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:34:50,765 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:34:50,767 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:34:51,177 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:34:51,186 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:34:51,186 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 18:34:51,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:34:51 BoogieIcfgContainer [2022-11-18 18:34:51,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:34:51,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:34:51,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:34:51,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:34:51,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:34:49" (1/3) ... [2022-11-18 18:34:51,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3401b77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:34:51, skipping insertion in model container [2022-11-18 18:34:51,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:50" (2/3) ... [2022-11-18 18:34:51,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3401b77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:34:51, skipping insertion in model container [2022-11-18 18:34:51,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:34:51" (3/3) ... [2022-11-18 18:34:51,207 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2022-11-18 18:34:51,216 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:34:51,227 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:34:51,227 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-18 18:34:51,227 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:34:51,361 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:34:51,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 217 transitions, 444 flow [2022-11-18 18:34:51,487 INFO L130 PetriNetUnfolder]: 15/215 cut-off events. [2022-11-18 18:34:51,488 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:34:51,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 215 events. 15/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 513 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2022-11-18 18:34:51,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 217 transitions, 444 flow [2022-11-18 18:34:51,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 215 transitions, 436 flow [2022-11-18 18:34:51,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:34:51,527 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;@1fcc3171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:34:51,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-18 18:34:51,552 INFO L130 PetriNetUnfolder]: 3/56 cut-off events. [2022-11-18 18:34:51,552 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:34:51,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:51,559 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] [2022-11-18 18:34:51,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:51,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash -648803015, now seen corresponding path program 1 times [2022-11-18 18:34:51,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:51,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404557828] [2022-11-18 18:34:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:51,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:51,705 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:34:51,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145543080] [2022-11-18 18:34:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:51,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:51,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:51,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:51,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:34:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:51,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:34:51,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:51,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:51,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404557828] [2022-11-18 18:34:51,934 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:34:51,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145543080] [2022-11-18 18:34:51,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145543080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:51,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:51,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:34:51,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080765241] [2022-11-18 18:34:51,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:51,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:34:51,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:51,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:34:51,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:34:51,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 217 [2022-11-18 18:34:51,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 215 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:51,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:51,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 217 [2022-11-18 18:34:51,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:52,142 INFO L130 PetriNetUnfolder]: 7/266 cut-off events. [2022-11-18 18:34:52,142 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:34:52,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 266 events. 7/266 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 749 event pairs, 0 based on Foata normal form. 9/247 useless extension candidates. Maximal degree in co-relation 234. Up to 17 conditions per place. [2022-11-18 18:34:52,147 INFO L137 encePairwiseOnDemand]: 203/217 looper letters, 23 selfloop transitions, 2 changer transitions 1/215 dead transitions. [2022-11-18 18:34:52,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 215 transitions, 486 flow [2022-11-18 18:34:52,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:34:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:34:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2022-11-18 18:34:52,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9447004608294931 [2022-11-18 18:34:52,182 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2022-11-18 18:34:52,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2022-11-18 18:34:52,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:52,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2022-11-18 18:34:52,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:52,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:52,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:52,220 INFO L175 Difference]: Start difference. First operand has 207 places, 215 transitions, 436 flow. Second operand 3 states and 615 transitions. [2022-11-18 18:34:52,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 215 transitions, 486 flow [2022-11-18 18:34:52,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 215 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:34:52,230 INFO L231 Difference]: Finished difference. Result has 208 places, 206 transitions, 430 flow [2022-11-18 18:34:52,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=208, PETRI_TRANSITIONS=206} [2022-11-18 18:34:52,236 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 1 predicate places. [2022-11-18 18:34:52,236 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 206 transitions, 430 flow [2022-11-18 18:34:52,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:52,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:52,237 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] [2022-11-18 18:34:52,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 18:34:52,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 18:34:52,443 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:52,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:52,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1361942790, now seen corresponding path program 1 times [2022-11-18 18:34:52,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:52,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30814445] [2022-11-18 18:34:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:52,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:52,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:52,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30814445] [2022-11-18 18:34:52,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30814445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:52,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:52,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:34:52,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40644368] [2022-11-18 18:34:52,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:52,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:34:52,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:52,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:34:52,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:34:52,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 217 [2022-11-18 18:34:52,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 206 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:52,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:52,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 217 [2022-11-18 18:34:52,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:52,843 INFO L130 PetriNetUnfolder]: 7/349 cut-off events. [2022-11-18 18:34:52,844 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:34:52,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 349 events. 7/349 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 710 event pairs, 0 based on Foata normal form. 2/323 useless extension candidates. Maximal degree in co-relation 248. Up to 22 conditions per place. [2022-11-18 18:34:52,848 INFO L137 encePairwiseOnDemand]: 212/217 looper letters, 17 selfloop transitions, 2 changer transitions 0/212 dead transitions. [2022-11-18 18:34:52,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 212 transitions, 480 flow [2022-11-18 18:34:52,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:34:52,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:34:52,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2022-11-18 18:34:52,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9324116743471582 [2022-11-18 18:34:52,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2022-11-18 18:34:52,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2022-11-18 18:34:52,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:52,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2022-11-18 18:34:52,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:52,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:52,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:52,859 INFO L175 Difference]: Start difference. First operand has 208 places, 206 transitions, 430 flow. Second operand 3 states and 607 transitions. [2022-11-18 18:34:52,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 212 transitions, 480 flow [2022-11-18 18:34:52,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 212 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:34:52,866 INFO L231 Difference]: Finished difference. Result has 209 places, 207 transitions, 444 flow [2022-11-18 18:34:52,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=444, PETRI_PLACES=209, PETRI_TRANSITIONS=207} [2022-11-18 18:34:52,867 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 2 predicate places. [2022-11-18 18:34:52,867 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 207 transitions, 444 flow [2022-11-18 18:34:52,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:52,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:52,869 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] [2022-11-18 18:34:52,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:34:52,869 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:52,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:52,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1662733345, now seen corresponding path program 1 times [2022-11-18 18:34:52,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:52,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667166556] [2022-11-18 18:34:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:52,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:52,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:34:52,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436179723] [2022-11-18 18:34:52,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:52,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:52,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:52,934 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:52,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:34:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:53,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:34:53,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:53,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:53,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:53,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667166556] [2022-11-18 18:34:53,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:34:53,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436179723] [2022-11-18 18:34:53,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436179723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:53,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:53,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:34:53,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33041297] [2022-11-18 18:34:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:53,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:34:53,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:53,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:34:53,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:34:53,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-18 18:34:53,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 207 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:53,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:53,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-18 18:34:53,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:53,522 INFO L130 PetriNetUnfolder]: 7/349 cut-off events. [2022-11-18 18:34:53,523 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:34:53,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 349 events. 7/349 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 711 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 201. Up to 30 conditions per place. [2022-11-18 18:34:53,528 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 23 selfloop transitions, 5 changer transitions 0/216 dead transitions. [2022-11-18 18:34:53,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 216 transitions, 518 flow [2022-11-18 18:34:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:34:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:34:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 979 transitions. [2022-11-18 18:34:53,534 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9023041474654377 [2022-11-18 18:34:53,534 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 979 transitions. [2022-11-18 18:34:53,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 979 transitions. [2022-11-18 18:34:53,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:53,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 979 transitions. [2022-11-18 18:34:53,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.8) internal successors, (979), 5 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:53,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:53,543 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:53,544 INFO L175 Difference]: Start difference. First operand has 209 places, 207 transitions, 444 flow. Second operand 5 states and 979 transitions. [2022-11-18 18:34:53,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 216 transitions, 518 flow [2022-11-18 18:34:53,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 216 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:34:53,554 INFO L231 Difference]: Finished difference. Result has 216 places, 210 transitions, 476 flow [2022-11-18 18:34:53,555 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=216, PETRI_TRANSITIONS=210} [2022-11-18 18:34:53,558 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 9 predicate places. [2022-11-18 18:34:53,558 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 210 transitions, 476 flow [2022-11-18 18:34:53,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:53,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:53,559 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] [2022-11-18 18:34:53,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:53,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:53,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:53,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:53,767 INFO L85 PathProgramCache]: Analyzing trace with hash 5126545, now seen corresponding path program 1 times [2022-11-18 18:34:53,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:53,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930129330] [2022-11-18 18:34:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:53,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:53,842 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:34:53,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158133603] [2022-11-18 18:34:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:53,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:53,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:53,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:53,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:34:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:54,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:34:54,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:54,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:54,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:54,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930129330] [2022-11-18 18:34:54,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:34:54,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158133603] [2022-11-18 18:34:54,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158133603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:54,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:54,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:34:54,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321847857] [2022-11-18 18:34:54,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:54,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:34:54,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:54,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:34:54,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:34:54,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-18 18:34:54,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 210 transitions, 476 flow. Second operand has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:54,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:54,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-18 18:34:54,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:54,259 INFO L130 PetriNetUnfolder]: 7/345 cut-off events. [2022-11-18 18:34:54,259 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 18:34:54,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 345 events. 7/345 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 703 event pairs, 0 based on Foata normal form. 4/331 useless extension candidates. Maximal degree in co-relation 250. Up to 28 conditions per place. [2022-11-18 18:34:54,262 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 16 selfloop transitions, 5 changer transitions 0/209 dead transitions. [2022-11-18 18:34:54,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 209 transitions, 516 flow [2022-11-18 18:34:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:34:54,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:34:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 779 transitions. [2022-11-18 18:34:54,265 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8974654377880185 [2022-11-18 18:34:54,265 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 779 transitions. [2022-11-18 18:34:54,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 779 transitions. [2022-11-18 18:34:54,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:54,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 779 transitions. [2022-11-18 18:34:54,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:54,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:54,271 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:54,271 INFO L175 Difference]: Start difference. First operand has 216 places, 210 transitions, 476 flow. Second operand 4 states and 779 transitions. [2022-11-18 18:34:54,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 209 transitions, 516 flow [2022-11-18 18:34:54,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 209 transitions, 507 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:34:54,278 INFO L231 Difference]: Finished difference. Result has 216 places, 209 transitions, 478 flow [2022-11-18 18:34:54,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=478, PETRI_PLACES=216, PETRI_TRANSITIONS=209} [2022-11-18 18:34:54,279 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 9 predicate places. [2022-11-18 18:34:54,279 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 209 transitions, 478 flow [2022-11-18 18:34:54,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:54,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:54,280 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] [2022-11-18 18:34:54,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:54,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:54,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:54,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:54,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1278315239, now seen corresponding path program 1 times [2022-11-18 18:34:54,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:54,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341600287] [2022-11-18 18:34:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:54,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:54,517 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:34:54,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894474668] [2022-11-18 18:34:54,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:54,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:54,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:54,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:54,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:34:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:54,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:34:54,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:54,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:34:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:54,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:54,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341600287] [2022-11-18 18:34:54,894 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:34:54,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894474668] [2022-11-18 18:34:54,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894474668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:34:54,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:34:54,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:34:54,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633116280] [2022-11-18 18:34:54,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:34:54,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:34:54,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:54,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:34:54,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:34:54,900 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-18 18:34:54,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 209 transitions, 478 flow. Second operand has 8 states, 8 states have (on average 192.875) internal successors, (1543), 8 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:54,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:54,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-18 18:34:54,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:55,103 INFO L130 PetriNetUnfolder]: 7/431 cut-off events. [2022-11-18 18:34:55,104 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-18 18:34:55,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 431 events. 7/431 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 466 event pairs, 0 based on Foata normal form. 6/419 useless extension candidates. Maximal degree in co-relation 317. Up to 22 conditions per place. [2022-11-18 18:34:55,107 INFO L137 encePairwiseOnDemand]: 210/217 looper letters, 29 selfloop transitions, 10 changer transitions 0/227 dead transitions. [2022-11-18 18:34:55,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 227 transitions, 610 flow [2022-11-18 18:34:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:34:55,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:34:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1751 transitions. [2022-11-18 18:34:55,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8965693804403482 [2022-11-18 18:34:55,112 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1751 transitions. [2022-11-18 18:34:55,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1751 transitions. [2022-11-18 18:34:55,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:55,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1751 transitions. [2022-11-18 18:34:55,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.55555555555554) internal successors, (1751), 9 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:55,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:55,123 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:55,123 INFO L175 Difference]: Start difference. First operand has 216 places, 209 transitions, 478 flow. Second operand 9 states and 1751 transitions. [2022-11-18 18:34:55,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 227 transitions, 610 flow [2022-11-18 18:34:55,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 227 transitions, 597 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:34:55,129 INFO L231 Difference]: Finished difference. Result has 227 places, 213 transitions, 528 flow [2022-11-18 18:34:55,130 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=528, PETRI_PLACES=227, PETRI_TRANSITIONS=213} [2022-11-18 18:34:55,131 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 20 predicate places. [2022-11-18 18:34:55,131 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 213 transitions, 528 flow [2022-11-18 18:34:55,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 192.875) internal successors, (1543), 8 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:55,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:55,132 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] [2022-11-18 18:34:55,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 18:34:55,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:55,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash -235804927, now seen corresponding path program 1 times [2022-11-18 18:34:55,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:55,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014932608] [2022-11-18 18:34:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:55,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:55,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:34:55,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704251318] [2022-11-18 18:34:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:55,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:55,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:55,396 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:55,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:34:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:55,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:34:55,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:55,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:34:56,129 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:56,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:56,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014932608] [2022-11-18 18:34:56,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:34:56,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704251318] [2022-11-18 18:34:56,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704251318] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:34:56,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:34:56,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 18:34:56,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827339069] [2022-11-18 18:34:56,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:34:56,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:34:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:56,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:34:56,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:34:56,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-18 18:34:56,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 213 transitions, 528 flow. Second operand has 14 states, 14 states have (on average 193.64285714285714) internal successors, (2711), 14 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:56,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:56,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-18 18:34:56,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:56,443 INFO L130 PetriNetUnfolder]: 13/655 cut-off events. [2022-11-18 18:34:56,443 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-11-18 18:34:56,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889 conditions, 655 events. 13/655 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1271 event pairs, 0 based on Foata normal form. 4/623 useless extension candidates. Maximal degree in co-relation 539. Up to 19 conditions per place. [2022-11-18 18:34:56,448 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 37 selfloop transitions, 16 changer transitions 0/241 dead transitions. [2022-11-18 18:34:56,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 241 transitions, 742 flow [2022-11-18 18:34:56,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:34:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:34:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2905 transitions. [2022-11-18 18:34:56,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8924731182795699 [2022-11-18 18:34:56,455 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2905 transitions. [2022-11-18 18:34:56,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2905 transitions. [2022-11-18 18:34:56,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:56,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2905 transitions. [2022-11-18 18:34:56,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 193.66666666666666) internal successors, (2905), 15 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:56,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 217.0) internal successors, (3472), 16 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:56,471 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 217.0) internal successors, (3472), 16 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:56,472 INFO L175 Difference]: Start difference. First operand has 227 places, 213 transitions, 528 flow. Second operand 15 states and 2905 transitions. [2022-11-18 18:34:56,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 241 transitions, 742 flow [2022-11-18 18:34:56,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 241 transitions, 724 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 18:34:56,479 INFO L231 Difference]: Finished difference. Result has 236 places, 217 transitions, 577 flow [2022-11-18 18:34:56,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=577, PETRI_PLACES=236, PETRI_TRANSITIONS=217} [2022-11-18 18:34:56,481 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 29 predicate places. [2022-11-18 18:34:56,481 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 217 transitions, 577 flow [2022-11-18 18:34:56,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 193.64285714285714) internal successors, (2711), 14 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:56,482 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:56,483 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] [2022-11-18 18:34:56,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 18:34:56,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:56,690 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:56,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:56,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1415545401, now seen corresponding path program 2 times [2022-11-18 18:34:56,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:56,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285276087] [2022-11-18 18:34:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:56,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:56,731 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:34:56,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150960688] [2022-11-18 18:34:56,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:34:56,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:56,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:56,733 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:56,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:34:56,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:34:56,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:34:56,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:34:56,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-18 18:34:57,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:34:57,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:57,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285276087] [2022-11-18 18:34:57,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:34:57,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150960688] [2022-11-18 18:34:57,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150960688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:57,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:57,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:34:57,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476839386] [2022-11-18 18:34:57,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:57,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:34:57,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:57,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:34:57,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:34:57,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-18 18:34:57,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 217 transitions, 577 flow. Second operand has 4 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:57,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:57,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-18 18:34:57,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:57,328 INFO L130 PetriNetUnfolder]: 13/655 cut-off events. [2022-11-18 18:34:57,328 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-18 18:34:57,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 655 events. 13/655 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1262 event pairs, 0 based on Foata normal form. 0/621 useless extension candidates. Maximal degree in co-relation 569. Up to 50 conditions per place. [2022-11-18 18:34:57,332 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 29 selfloop transitions, 5 changer transitions 0/229 dead transitions. [2022-11-18 18:34:57,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 229 transitions, 669 flow [2022-11-18 18:34:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:34:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:34:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 970 transitions. [2022-11-18 18:34:57,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8940092165898618 [2022-11-18 18:34:57,336 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 970 transitions. [2022-11-18 18:34:57,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 970 transitions. [2022-11-18 18:34:57,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:57,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 970 transitions. [2022-11-18 18:34:57,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.0) internal successors, (970), 5 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:57,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:57,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:57,342 INFO L175 Difference]: Start difference. First operand has 236 places, 217 transitions, 577 flow. Second operand 5 states and 970 transitions. [2022-11-18 18:34:57,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 229 transitions, 669 flow [2022-11-18 18:34:57,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 229 transitions, 610 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-18 18:34:57,350 INFO L231 Difference]: Finished difference. Result has 231 places, 220 transitions, 552 flow [2022-11-18 18:34:57,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=231, PETRI_TRANSITIONS=220} [2022-11-18 18:34:57,351 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 24 predicate places. [2022-11-18 18:34:57,351 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 220 transitions, 552 flow [2022-11-18 18:34:57,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:57,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:57,352 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] [2022-11-18 18:34:57,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 18:34:57,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:57,558 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:57,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:57,558 INFO L85 PathProgramCache]: Analyzing trace with hash -932234146, now seen corresponding path program 1 times [2022-11-18 18:34:57,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:57,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048131808] [2022-11-18 18:34:57,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:57,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:57,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:34:57,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770604141] [2022-11-18 18:34:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:57,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:57,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:57,600 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:57,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:34:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:57,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:34:57,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:58,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:34:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:58,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:58,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048131808] [2022-11-18 18:34:58,444 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:34:58,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770604141] [2022-11-18 18:34:58,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770604141] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:34:58,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:34:58,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 18:34:58,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394179223] [2022-11-18 18:34:58,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:34:58,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:34:58,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:58,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:34:58,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:34:58,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-18 18:34:58,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 220 transitions, 552 flow. Second operand has 16 states, 16 states have (on average 193.6875) internal successors, (3099), 16 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:58,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:58,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-18 18:34:58,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:58,953 INFO L130 PetriNetUnfolder]: 7/765 cut-off events. [2022-11-18 18:34:58,953 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-18 18:34:58,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 765 events. 7/765 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 481 event pairs, 0 based on Foata normal form. 8/759 useless extension candidates. Maximal degree in co-relation 604. Up to 20 conditions per place. [2022-11-18 18:34:58,957 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 60 selfloop transitions, 22 changer transitions 0/273 dead transitions. [2022-11-18 18:34:58,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 273 transitions, 909 flow [2022-11-18 18:34:58,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:34:58,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:34:58,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4075 transitions. [2022-11-18 18:34:58,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8942286592056178 [2022-11-18 18:34:58,966 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4075 transitions. [2022-11-18 18:34:58,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4075 transitions. [2022-11-18 18:34:58,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:58,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4075 transitions. [2022-11-18 18:34:59,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 194.04761904761904) internal successors, (4075), 21 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:59,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:59,019 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:59,020 INFO L175 Difference]: Start difference. First operand has 231 places, 220 transitions, 552 flow. Second operand 21 states and 4075 transitions. [2022-11-18 18:34:59,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 273 transitions, 909 flow [2022-11-18 18:34:59,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 273 transitions, 899 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-18 18:34:59,028 INFO L231 Difference]: Finished difference. Result has 255 places, 229 transitions, 662 flow [2022-11-18 18:34:59,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=662, PETRI_PLACES=255, PETRI_TRANSITIONS=229} [2022-11-18 18:34:59,032 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 48 predicate places. [2022-11-18 18:34:59,032 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 229 transitions, 662 flow [2022-11-18 18:34:59,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 193.6875) internal successors, (3099), 16 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:59,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:59,050 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] [2022-11-18 18:34:59,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:59,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 18:34:59,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:59,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:59,252 INFO L85 PathProgramCache]: Analyzing trace with hash -740231522, now seen corresponding path program 2 times [2022-11-18 18:34:59,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:59,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982520831] [2022-11-18 18:34:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:59,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:59,319 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:34:59,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153513140] [2022-11-18 18:34:59,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:34:59,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:59,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:59,321 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:59,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:34:59,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:34:59,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:34:59,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:34:59,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-18 18:35:00,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:00,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:00,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982520831] [2022-11-18 18:35:00,075 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:35:00,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153513140] [2022-11-18 18:35:00,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153513140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:00,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:00,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:35:00,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298930097] [2022-11-18 18:35:00,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:00,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:00,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:00,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:00,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:00,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-18 18:35:00,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 229 transitions, 662 flow. Second operand has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:00,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:00,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-18 18:35:00,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:00,295 INFO L130 PetriNetUnfolder]: 7/763 cut-off events. [2022-11-18 18:35:00,295 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-11-18 18:35:00,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 763 events. 7/763 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 477 event pairs, 0 based on Foata normal form. 2/751 useless extension candidates. Maximal degree in co-relation 605. Up to 80 conditions per place. [2022-11-18 18:35:00,298 INFO L137 encePairwiseOnDemand]: 213/217 looper letters, 18 selfloop transitions, 5 changer transitions 0/227 dead transitions. [2022-11-18 18:35:00,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 227 transitions, 698 flow [2022-11-18 18:35:00,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:35:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:35:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 769 transitions. [2022-11-18 18:35:00,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-11-18 18:35:00,301 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 769 transitions. [2022-11-18 18:35:00,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 769 transitions. [2022-11-18 18:35:00,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:00,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 769 transitions. [2022-11-18 18:35:00,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:00,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:00,305 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:00,305 INFO L175 Difference]: Start difference. First operand has 255 places, 229 transitions, 662 flow. Second operand 4 states and 769 transitions. [2022-11-18 18:35:00,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 227 transitions, 698 flow [2022-11-18 18:35:00,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 227 transitions, 675 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 18:35:00,312 INFO L231 Difference]: Finished difference. Result has 246 places, 227 transitions, 639 flow [2022-11-18 18:35:00,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=639, PETRI_PLACES=246, PETRI_TRANSITIONS=227} [2022-11-18 18:35:00,313 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 39 predicate places. [2022-11-18 18:35:00,313 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 227 transitions, 639 flow [2022-11-18 18:35:00,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:00,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:00,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:00,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:00,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:00,528 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:35:00,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:00,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1998132056, now seen corresponding path program 1 times [2022-11-18 18:35:00,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:00,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154995368] [2022-11-18 18:35:00,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:00,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:00,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:35:00,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846897795] [2022-11-18 18:35:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:00,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:00,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:00,601 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:35:00,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:35:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:01,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:35:01,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:01,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:02,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:02,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154995368] [2022-11-18 18:35:02,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:35:02,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846897795] [2022-11-18 18:35:02,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846897795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:35:02,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:35:02,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-18 18:35:02,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516572899] [2022-11-18 18:35:02,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:35:02,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:35:02,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:02,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:35:02,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:35:02,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-18 18:35:02,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 227 transitions, 639 flow. Second operand has 32 states, 32 states have (on average 194.125) internal successors, (6212), 32 states have internal predecessors, (6212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:02,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:02,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-18 18:35:02,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:03,610 INFO L130 PetriNetUnfolder]: 7/1435 cut-off events. [2022-11-18 18:35:03,610 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2022-11-18 18:35:03,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 1435 events. 7/1435 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 518 event pairs, 0 based on Foata normal form. 16/1437 useless extension candidates. Maximal degree in co-relation 1194. Up to 38 conditions per place. [2022-11-18 18:35:03,614 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 124 selfloop transitions, 46 changer transitions 0/359 dead transitions. [2022-11-18 18:35:03,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 359 transitions, 1575 flow [2022-11-18 18:35:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 18:35:03,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 18:35:03,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 8727 transitions. [2022-11-18 18:35:03,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8937019969278034 [2022-11-18 18:35:03,632 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 8727 transitions. [2022-11-18 18:35:03,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 8727 transitions. [2022-11-18 18:35:03,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:03,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 8727 transitions. [2022-11-18 18:35:03,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 193.93333333333334) internal successors, (8727), 45 states have internal predecessors, (8727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:03,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 217.0) internal successors, (9982), 46 states have internal predecessors, (9982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:03,675 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 217.0) internal successors, (9982), 46 states have internal predecessors, (9982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:03,676 INFO L175 Difference]: Start difference. First operand has 246 places, 227 transitions, 639 flow. Second operand 45 states and 8727 transitions. [2022-11-18 18:35:03,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 359 transitions, 1575 flow [2022-11-18 18:35:03,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 359 transitions, 1565 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:35:03,686 INFO L231 Difference]: Finished difference. Result has 296 places, 252 transitions, 952 flow [2022-11-18 18:35:03,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=952, PETRI_PLACES=296, PETRI_TRANSITIONS=252} [2022-11-18 18:35:03,688 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 89 predicate places. [2022-11-18 18:35:03,688 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 252 transitions, 952 flow [2022-11-18 18:35:03,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 194.125) internal successors, (6212), 32 states have internal predecessors, (6212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:03,690 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:03,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:03,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-18 18:35:03,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:35:03,898 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:35:03,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash 282355752, now seen corresponding path program 2 times [2022-11-18 18:35:03,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:03,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911274291] [2022-11-18 18:35:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:03,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:04,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:35:04,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741825601] [2022-11-18 18:35:04,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:35:04,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:04,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:04,031 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:35:04,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:35:04,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:35:04,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:04,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:35:04,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2022-11-18 18:35:04,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:35:04,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:04,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911274291] [2022-11-18 18:35:04,556 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:35:04,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741825601] [2022-11-18 18:35:04,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741825601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:04,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:04,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:35:04,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993469773] [2022-11-18 18:35:04,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:04,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:04,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:04,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:04,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:04,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-18 18:35:04,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 252 transitions, 952 flow. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:04,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:04,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-18 18:35:04,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:05,187 INFO L130 PetriNetUnfolder]: 23/1491 cut-off events. [2022-11-18 18:35:05,187 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2022-11-18 18:35:05,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2168 conditions, 1491 events. 23/1491 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 982 event pairs, 3 based on Foata normal form. 0/1471 useless extension candidates. Maximal degree in co-relation 1897. Up to 38 conditions per place. [2022-11-18 18:35:05,192 INFO L137 encePairwiseOnDemand]: 212/217 looper letters, 16 selfloop transitions, 4 changer transitions 0/254 dead transitions. [2022-11-18 18:35:05,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 254 transitions, 1002 flow [2022-11-18 18:35:05,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:35:05,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:35:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 971 transitions. [2022-11-18 18:35:05,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8949308755760369 [2022-11-18 18:35:05,195 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 971 transitions. [2022-11-18 18:35:05,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 971 transitions. [2022-11-18 18:35:05,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:05,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 971 transitions. [2022-11-18 18:35:05,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:05,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:05,200 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:05,200 INFO L175 Difference]: Start difference. First operand has 296 places, 252 transitions, 952 flow. Second operand 5 states and 971 transitions. [2022-11-18 18:35:05,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 254 transitions, 1002 flow [2022-11-18 18:35:05,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 254 transitions, 945 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-18 18:35:05,212 INFO L231 Difference]: Finished difference. Result has 281 places, 251 transitions, 901 flow [2022-11-18 18:35:05,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=901, PETRI_PLACES=281, PETRI_TRANSITIONS=251} [2022-11-18 18:35:05,213 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 74 predicate places. [2022-11-18 18:35:05,213 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 251 transitions, 901 flow [2022-11-18 18:35:05,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:05,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:05,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:05,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:05,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:35:05,421 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:35:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:05,421 INFO L85 PathProgramCache]: Analyzing trace with hash 282386537, now seen corresponding path program 1 times [2022-11-18 18:35:05,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:05,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876710034] [2022-11-18 18:35:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:05,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:05,552 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:35:05,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131541532] [2022-11-18 18:35:05,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:05,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:05,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:05,554 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:35:05,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:35:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:06,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:35:06,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:07,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:09,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:09,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876710034] [2022-11-18 18:35:09,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:35:09,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131541532] [2022-11-18 18:35:09,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131541532] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:35:09,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:35:09,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-18 18:35:09,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097397351] [2022-11-18 18:35:09,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:35:09,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 18:35:09,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:09,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 18:35:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 18:35:09,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 217 [2022-11-18 18:35:09,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 251 transitions, 901 flow. Second operand has 61 states, 61 states have (on average 194.37704918032787) internal successors, (11857), 61 states have internal predecessors, (11857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:09,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:09,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 217 [2022-11-18 18:35:09,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:13,418 INFO L130 PetriNetUnfolder]: 7/2694 cut-off events. [2022-11-18 18:35:13,418 INFO L131 PetriNetUnfolder]: For 4943/4943 co-relation queries the response was YES. [2022-11-18 18:35:13,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 2694 events. 7/2694 cut-off events. For 4943/4943 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 587 event pairs, 0 based on Foata normal form. 30/2712 useless extension candidates. Maximal degree in co-relation 4393. Up to 96 conditions per place. [2022-11-18 18:35:13,427 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 244 selfloop transitions, 91 changer transitions 0/523 dead transitions. [2022-11-18 18:35:13,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 523 transitions, 2983 flow [2022-11-18 18:35:13,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-18 18:35:13,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-18 18:35:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 17449 transitions. [2022-11-18 18:35:13,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8934459805427547 [2022-11-18 18:35:13,452 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 17449 transitions. [2022-11-18 18:35:13,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 17449 transitions. [2022-11-18 18:35:13,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:13,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 17449 transitions. [2022-11-18 18:35:13,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 193.87777777777777) internal successors, (17449), 90 states have internal predecessors, (17449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:13,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 217.0) internal successors, (19747), 91 states have internal predecessors, (19747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:13,522 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 217.0) internal successors, (19747), 91 states have internal predecessors, (19747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:13,522 INFO L175 Difference]: Start difference. First operand has 281 places, 251 transitions, 901 flow. Second operand 90 states and 17449 transitions. [2022-11-18 18:35:13,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 523 transitions, 2983 flow [2022-11-18 18:35:13,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 523 transitions, 2975 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:35:13,541 INFO L231 Difference]: Finished difference. Result has 382 places, 297 transitions, 1582 flow [2022-11-18 18:35:13,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1582, PETRI_PLACES=382, PETRI_TRANSITIONS=297} [2022-11-18 18:35:13,543 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 175 predicate places. [2022-11-18 18:35:13,543 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 297 transitions, 1582 flow [2022-11-18 18:35:13,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 194.37704918032787) internal successors, (11857), 61 states have internal predecessors, (11857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:13,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:13,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:13,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:13,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:13,757 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:35:13,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:13,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1185555336, now seen corresponding path program 2 times [2022-11-18 18:35:13,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:13,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713991210] [2022-11-18 18:35:13,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:13,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:13,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:35:13,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800839898] [2022-11-18 18:35:13,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:35:13,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:13,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:13,994 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:35:14,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:35:15,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:35:15,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:15,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 5208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:35:15,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 18:35:17,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 18:35:19,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:19,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713991210] [2022-11-18 18:35:19,276 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:35:19,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800839898] [2022-11-18 18:35:19,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800839898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:35:19,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:35:19,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:35:19,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6200767] [2022-11-18 18:35:19,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:35:19,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:35:19,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:19,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:35:19,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:35:19,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-18 18:35:19,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 297 transitions, 1582 flow. Second operand has 8 states, 8 states have (on average 190.75) internal successors, (1526), 8 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:19,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:19,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-18 18:35:19,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:22,321 INFO L130 PetriNetUnfolder]: 8/4000 cut-off events. [2022-11-18 18:35:22,321 INFO L131 PetriNetUnfolder]: For 4582/4582 co-relation queries the response was YES. [2022-11-18 18:35:22,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6701 conditions, 4000 events. 8/4000 cut-off events. For 4582/4582 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 526 event pairs, 0 based on Foata normal form. 3/3990 useless extension candidates. Maximal degree in co-relation 4617. Up to 187 conditions per place. [2022-11-18 18:35:22,331 INFO L137 encePairwiseOnDemand]: 210/217 looper letters, 38 selfloop transitions, 9 changer transitions 0/321 dead transitions. [2022-11-18 18:35:22,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 321 transitions, 1738 flow [2022-11-18 18:35:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:35:22,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:35:22,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1733 transitions. [2022-11-18 18:35:22,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8873527905785971 [2022-11-18 18:35:22,334 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1733 transitions. [2022-11-18 18:35:22,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1733 transitions. [2022-11-18 18:35:22,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:22,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1733 transitions. [2022-11-18 18:35:22,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.55555555555554) internal successors, (1733), 9 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:22,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:22,341 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:22,342 INFO L175 Difference]: Start difference. First operand has 382 places, 297 transitions, 1582 flow. Second operand 9 states and 1733 transitions. [2022-11-18 18:35:22,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 321 transitions, 1738 flow [2022-11-18 18:35:22,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 321 transitions, 1619 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-18 18:35:22,375 INFO L231 Difference]: Finished difference. Result has 353 places, 301 transitions, 1519 flow [2022-11-18 18:35:22,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1519, PETRI_PLACES=353, PETRI_TRANSITIONS=301} [2022-11-18 18:35:22,376 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 146 predicate places. [2022-11-18 18:35:22,376 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 301 transitions, 1519 flow [2022-11-18 18:35:22,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 190.75) internal successors, (1526), 8 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:22,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:22,378 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] [2022-11-18 18:35:22,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:22,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:22,591 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:35:22,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:22,591 INFO L85 PathProgramCache]: Analyzing trace with hash -894325561, now seen corresponding path program 1 times [2022-11-18 18:35:22,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:22,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052817033] [2022-11-18 18:35:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:22,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:22,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:35:22,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103215065] [2022-11-18 18:35:22,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:22,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:22,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:22,846 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:35:22,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:35:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:27,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 5339 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:35:27,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:29,074 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 18:35:29,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 18:35:31,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:31,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052817033] [2022-11-18 18:35:31,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:35:31,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103215065] [2022-11-18 18:35:31,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103215065] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:35:31,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:35:31,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 18:35:31,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480209976] [2022-11-18 18:35:31,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:35:31,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:35:31,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:31,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:35:31,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:35:31,234 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 217 [2022-11-18 18:35:31,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 301 transitions, 1519 flow. Second operand has 14 states, 14 states have (on average 182.35714285714286) internal successors, (2553), 14 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:31,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:31,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 217 [2022-11-18 18:35:31,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:34,277 INFO L130 PetriNetUnfolder]: 8/3968 cut-off events. [2022-11-18 18:35:34,277 INFO L131 PetriNetUnfolder]: For 4795/4795 co-relation queries the response was YES. [2022-11-18 18:35:34,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6973 conditions, 3968 events. 8/3968 cut-off events. For 4795/4795 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 432 event pairs, 0 based on Foata normal form. 32/3987 useless extension candidates. Maximal degree in co-relation 4758. Up to 307 conditions per place. [2022-11-18 18:35:34,286 INFO L137 encePairwiseOnDemand]: 203/217 looper letters, 224 selfloop transitions, 144 changer transitions 0/541 dead transitions. [2022-11-18 18:35:34,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 541 transitions, 4379 flow [2022-11-18 18:35:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:35:34,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 18:35:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4351 transitions. [2022-11-18 18:35:34,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8354454685099847 [2022-11-18 18:35:34,295 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4351 transitions. [2022-11-18 18:35:34,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4351 transitions. [2022-11-18 18:35:34,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:34,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4351 transitions. [2022-11-18 18:35:34,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 181.29166666666666) internal successors, (4351), 24 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:34,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 217.0) internal successors, (5425), 25 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:34,309 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 217.0) internal successors, (5425), 25 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:34,309 INFO L175 Difference]: Start difference. First operand has 353 places, 301 transitions, 1519 flow. Second operand 24 states and 4351 transitions. [2022-11-18 18:35:34,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 541 transitions, 4379 flow [2022-11-18 18:35:34,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 541 transitions, 4363 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 18:35:34,348 INFO L231 Difference]: Finished difference. Result has 377 places, 432 transitions, 3558 flow [2022-11-18 18:35:34,349 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3558, PETRI_PLACES=377, PETRI_TRANSITIONS=432} [2022-11-18 18:35:34,349 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 170 predicate places. [2022-11-18 18:35:34,349 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 432 transitions, 3558 flow [2022-11-18 18:35:34,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 182.35714285714286) internal successors, (2553), 14 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:34,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:34,351 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] [2022-11-18 18:35:34,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:34,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:34,566 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:35:34,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:34,566 INFO L85 PathProgramCache]: Analyzing trace with hash 123984631, now seen corresponding path program 1 times [2022-11-18 18:35:34,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:34,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652722979] [2022-11-18 18:35:34,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:34,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:34,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:35:34,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349676046] [2022-11-18 18:35:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:34,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:34,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:34,778 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:35:34,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:35:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:42,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 5507 conjuncts, 226 conjunts are in the unsatisfiable core [2022-11-18 18:35:42,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:42,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:42,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-18 18:35:42,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:42,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-18 18:35:42,761 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 18:35:42,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 18:35:44,045 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-18 18:35:44,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-18 18:35:45,474 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-18 18:35:45,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-11-18 18:35:47,277 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 18:35:47,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 32 treesize of output 57 [2022-11-18 18:35:50,244 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:35:50,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:35:53,494 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:35:53,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:35:57,706 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:35:57,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:00,839 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:00,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:04,309 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:04,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:07,747 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:07,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:11,373 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:11,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:14,544 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:14,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:18,164 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:18,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:22,034 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:22,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:25,250 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:25,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:28,941 INFO L321 Elim1Store]: treesize reduction 70, result has 27.1 percent of original size [2022-11-18 18:36:28,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 46 [2022-11-18 18:36:32,322 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:32,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:35,673 INFO L321 Elim1Store]: treesize reduction 70, result has 27.1 percent of original size [2022-11-18 18:36:35,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 46 [2022-11-18 18:36:39,578 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:39,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:42,841 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:42,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:46,232 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:46,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:50,242 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:50,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:53,498 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:36:53,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:36:57,126 INFO L321 Elim1Store]: treesize reduction 70, result has 27.1 percent of original size [2022-11-18 18:36:57,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 46 [2022-11-18 18:37:00,676 INFO L321 Elim1Store]: treesize reduction 70, result has 27.1 percent of original size [2022-11-18 18:37:00,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 46 [2022-11-18 18:37:03,878 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:37:03,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:37:07,876 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:37:07,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:37:11,148 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:37:11,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:37:14,646 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:37:14,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:37:18,620 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-18 18:37:18,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 37 treesize of output 69 [2022-11-18 18:37:22,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:37:22,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2022-11-18 18:37:23,921 INFO L321 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2022-11-18 18:37:23,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 39 [2022-11-18 18:37:24,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 18:37:24,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 18:37:24,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:37:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2375 proven. 4783 refuted. 0 times theorem prover too weak. 13317 trivial. 0 not checked. [2022-11-18 18:37:25,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 5766 proven. 2560 refuted. 0 times theorem prover too weak. 12149 trivial. 0 not checked. [2022-11-18 18:37:50,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:50,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652722979] [2022-11-18 18:37:50,063 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:37:50,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349676046] [2022-11-18 18:37:50,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349676046] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:50,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:37:50,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 16] total 54 [2022-11-18 18:37:50,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175847352] [2022-11-18 18:37:50,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:50,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-18 18:37:50,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:50,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-18 18:37:50,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=625, Invalid=2345, Unknown=0, NotChecked=0, Total=2970 [2022-11-18 18:37:50,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 217 [2022-11-18 18:37:50,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 432 transitions, 3558 flow. Second operand has 55 states, 55 states have (on average 134.1818181818182) internal successors, (7380), 55 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:50,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:50,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 217 [2022-11-18 18:37:50,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:00,250 INFO L130 PetriNetUnfolder]: 349/5335 cut-off events. [2022-11-18 18:38:00,250 INFO L131 PetriNetUnfolder]: For 6755/6755 co-relation queries the response was YES. [2022-11-18 18:38:00,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11335 conditions, 5335 events. 349/5335 cut-off events. For 6755/6755 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 12345 event pairs, 287 based on Foata normal form. 56/5163 useless extension candidates. Maximal degree in co-relation 6205. Up to 729 conditions per place. [2022-11-18 18:38:00,275 INFO L137 encePairwiseOnDemand]: 186/217 looper letters, 391 selfloop transitions, 250 changer transitions 0/762 dead transitions. [2022-11-18 18:38:00,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 762 transitions, 6201 flow [2022-11-18 18:38:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-18 18:38:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2022-11-18 18:38:00,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 8633 transitions. [2022-11-18 18:38:00,286 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6027789414886189 [2022-11-18 18:38:00,286 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 8633 transitions. [2022-11-18 18:38:00,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 8633 transitions. [2022-11-18 18:38:00,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:00,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 8633 transitions. [2022-11-18 18:38:00,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 130.8030303030303) internal successors, (8633), 66 states have internal predecessors, (8633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:00,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 217.0) internal successors, (14539), 67 states have internal predecessors, (14539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:00,318 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 217.0) internal successors, (14539), 67 states have internal predecessors, (14539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:00,318 INFO L175 Difference]: Start difference. First operand has 377 places, 432 transitions, 3558 flow. Second operand 66 states and 8633 transitions. [2022-11-18 18:38:00,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 762 transitions, 6201 flow [2022-11-18 18:38:00,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 762 transitions, 6165 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-11-18 18:38:00,379 INFO L231 Difference]: Finished difference. Result has 450 places, 551 transitions, 5223 flow [2022-11-18 18:38:00,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=3512, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=5223, PETRI_PLACES=450, PETRI_TRANSITIONS=551} [2022-11-18 18:38:00,380 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 243 predicate places. [2022-11-18 18:38:00,380 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 551 transitions, 5223 flow [2022-11-18 18:38:00,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 134.1818181818182) internal successors, (7380), 55 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:00,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:00,384 INFO L209 CegarLoopForPetriNet]: trace histogram [62, 62, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 61, 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] [2022-11-18 18:38:00,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:00,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:38:00,596 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:38:00,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:00,597 INFO L85 PathProgramCache]: Analyzing trace with hash 415109579, now seen corresponding path program 2 times [2022-11-18 18:38:00,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:00,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065344378] [2022-11-18 18:38:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:00,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:00,939 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:38:00,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902486217] [2022-11-18 18:38:00,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:38:00,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:00,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:00,941 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:00,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:40:11,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:40:11,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:40:11,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 10400 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:40:11,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 75373 backedges. 39643 proven. 0 refuted. 0 times theorem prover too weak. 35730 trivial. 0 not checked. [2022-11-18 18:40:15,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:40:15,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:15,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065344378] [2022-11-18 18:40:15,451 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:15,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902486217] [2022-11-18 18:40:15,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902486217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:15,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:15,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:40:15,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544102809] [2022-11-18 18:40:15,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:15,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:40:15,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:15,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:40:15,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:40:15,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 217 [2022-11-18 18:40:15,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 551 transitions, 5223 flow. Second operand has 11 states, 11 states have (on average 182.36363636363637) internal successors, (2006), 11 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:15,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:15,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 217 [2022-11-18 18:40:15,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:19,087 INFO L130 PetriNetUnfolder]: 8/3920 cut-off events. [2022-11-18 18:40:19,087 INFO L131 PetriNetUnfolder]: For 9440/9440 co-relation queries the response was YES. [2022-11-18 18:40:19,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9329 conditions, 3920 events. 8/3920 cut-off events. For 9440/9440 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 286 event pairs, 0 based on Foata normal form. 1/3908 useless extension candidates. Maximal degree in co-relation 5991. Up to 307 conditions per place. [2022-11-18 18:40:19,096 INFO L137 encePairwiseOnDemand]: 207/217 looper letters, 252 selfloop transitions, 108 changer transitions 0/581 dead transitions. [2022-11-18 18:40:19,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 581 transitions, 6132 flow [2022-11-18 18:40:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:40:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 18:40:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2912 transitions. [2022-11-18 18:40:19,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2022-11-18 18:40:19,100 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2912 transitions. [2022-11-18 18:40:19,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2912 transitions. [2022-11-18 18:40:19,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:19,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2912 transitions. [2022-11-18 18:40:19,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 182.0) internal successors, (2912), 16 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:19,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 217.0) internal successors, (3689), 17 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:19,109 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 217.0) internal successors, (3689), 17 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:19,109 INFO L175 Difference]: Start difference. First operand has 450 places, 551 transitions, 5223 flow. Second operand 16 states and 2912 transitions. [2022-11-18 18:40:19,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 581 transitions, 6132 flow [2022-11-18 18:40:19,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 581 transitions, 5735 flow, removed 74 selfloop flow, removed 21 redundant places. [2022-11-18 18:40:19,202 INFO L231 Difference]: Finished difference. Result has 444 places, 552 transitions, 5105 flow [2022-11-18 18:40:19,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=4819, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5105, PETRI_PLACES=444, PETRI_TRANSITIONS=552} [2022-11-18 18:40:19,203 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 237 predicate places. [2022-11-18 18:40:19,203 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 552 transitions, 5105 flow [2022-11-18 18:40:19,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 182.36363636363637) internal successors, (2006), 11 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:19,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:19,205 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] [2022-11-18 18:40:19,418 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2022-11-18 18:40:19,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:19,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:40:19,456 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:40:19,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:19,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1047335675, now seen corresponding path program 2 times [2022-11-18 18:40:19,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:19,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518829173] [2022-11-18 18:40:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:19,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:19,786 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:19,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901385608] [2022-11-18 18:40:19,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:40:19,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:19,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:19,793 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:19,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:43:06,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:43:06,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:06,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 10566 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:43:06,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 5109 proven. 0 refuted. 0 times theorem prover too weak. 72708 trivial. 0 not checked. [2022-11-18 18:43:06,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:06,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:06,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518829173] [2022-11-18 18:43:06,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:06,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901385608] [2022-11-18 18:43:06,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901385608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:06,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:06,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:43:06,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510810684] [2022-11-18 18:43:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:06,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:43:06,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:06,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:43:06,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:06,760 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 217 [2022-11-18 18:43:06,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 552 transitions, 5105 flow. Second operand has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:06,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:06,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 217 [2022-11-18 18:43:06,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:10,266 INFO L130 PetriNetUnfolder]: 8/3892 cut-off events. [2022-11-18 18:43:10,266 INFO L131 PetriNetUnfolder]: For 8576/8576 co-relation queries the response was YES. [2022-11-18 18:43:10,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8981 conditions, 3892 events. 8/3892 cut-off events. For 8576/8576 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 257 event pairs, 0 based on Foata normal form. 28/3907 useless extension candidates. Maximal degree in co-relation 5849. Up to 423 conditions per place. [2022-11-18 18:43:10,278 INFO L137 encePairwiseOnDemand]: 208/217 looper letters, 39 selfloop transitions, 299 changer transitions 0/566 dead transitions. [2022-11-18 18:43:10,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 566 transitions, 5845 flow [2022-11-18 18:43:10,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:43:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:43:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2227 transitions. [2022-11-18 18:43:10,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8552227342549923 [2022-11-18 18:43:10,282 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2227 transitions. [2022-11-18 18:43:10,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2227 transitions. [2022-11-18 18:43:10,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:10,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2227 transitions. [2022-11-18 18:43:10,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.58333333333334) internal successors, (2227), 12 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:10,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 217.0) internal successors, (2821), 13 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:10,289 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 217.0) internal successors, (2821), 13 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:10,289 INFO L175 Difference]: Start difference. First operand has 444 places, 552 transitions, 5105 flow. Second operand 12 states and 2227 transitions. [2022-11-18 18:43:10,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 566 transitions, 5845 flow [2022-11-18 18:43:10,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 566 transitions, 5728 flow, removed 3 selfloop flow, removed 12 redundant places. [2022-11-18 18:43:10,365 INFO L231 Difference]: Finished difference. Result has 444 places, 553 transitions, 5717 flow [2022-11-18 18:43:10,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=4982, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5717, PETRI_PLACES=444, PETRI_TRANSITIONS=553} [2022-11-18 18:43:10,366 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 237 predicate places. [2022-11-18 18:43:10,366 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 553 transitions, 5717 flow [2022-11-18 18:43:10,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:10,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:10,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:10,593 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2022-11-18 18:43:10,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:10,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:43:10,613 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:43:10,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:10,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1032449126, now seen corresponding path program 3 times [2022-11-18 18:43:10,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:10,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281877799] [2022-11-18 18:43:10,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:10,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:11,082 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:11,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003626084] [2022-11-18 18:43:11,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:43:11,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:11,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:11,090 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:11,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 18:43:16,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 18:43:16,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:43:16,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:43:16,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:23,767 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-18 18:43:23,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-18 18:43:35,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:35,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281877799] [2022-11-18 18:43:35,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:43:35,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003626084] [2022-11-18 18:43:35,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003626084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:35,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:43:35,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 18:43:35,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481238360] [2022-11-18 18:43:35,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:35,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:43:35,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:35,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:43:35,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:43:35,530 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-18 18:43:35,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 553 transitions, 5717 flow. Second operand has 16 states, 16 states have (on average 191.875) internal successors, (3070), 16 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:35,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:35,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-18 18:43:35,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:52,774 INFO L130 PetriNetUnfolder]: 12/8871 cut-off events. [2022-11-18 18:43:52,774 INFO L131 PetriNetUnfolder]: For 24298/24298 co-relation queries the response was YES. [2022-11-18 18:43:52,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20661 conditions, 8871 events. 12/8871 cut-off events. For 24298/24298 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 241 event pairs, 0 based on Foata normal form. 4/8862 useless extension candidates. Maximal degree in co-relation 17559. Up to 450 conditions per place. [2022-11-18 18:43:52,794 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 77 selfloop transitions, 21 changer transitions 0/618 dead transitions. [2022-11-18 18:43:52,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 618 transitions, 6253 flow [2022-11-18 18:43:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:43:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:43:52,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4021 transitions. [2022-11-18 18:43:52,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8823787579547948 [2022-11-18 18:43:52,799 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4021 transitions. [2022-11-18 18:43:52,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4021 transitions. [2022-11-18 18:43:52,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:52,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4021 transitions. [2022-11-18 18:43:52,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 191.47619047619048) internal successors, (4021), 21 states have internal predecessors, (4021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:52,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:52,811 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 217.0) internal successors, (4774), 22 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:52,811 INFO L175 Difference]: Start difference. First operand has 444 places, 553 transitions, 5717 flow. Second operand 21 states and 4021 transitions. [2022-11-18 18:43:52,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 618 transitions, 6253 flow [2022-11-18 18:43:52,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 618 transitions, 5860 flow, removed 4 selfloop flow, removed 8 redundant places. [2022-11-18 18:43:52,935 INFO L231 Difference]: Finished difference. Result has 461 places, 566 transitions, 5527 flow [2022-11-18 18:43:52,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=5328, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5527, PETRI_PLACES=461, PETRI_TRANSITIONS=566} [2022-11-18 18:43:52,936 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 254 predicate places. [2022-11-18 18:43:52,936 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 566 transitions, 5527 flow [2022-11-18 18:43:52,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 191.875) internal successors, (3070), 16 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:52,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:52,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:52,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:53,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:43:53,155 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:43:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:53,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1448848162, now seen corresponding path program 4 times [2022-11-18 18:43:53,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:53,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463962951] [2022-11-18 18:43:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:53,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:54,243 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:54,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177612473] [2022-11-18 18:43:54,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:43:54,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:54,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:54,245 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:54,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 18:44:04,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:44:04,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:04,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 31930 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:44:04,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125055 trivial. 0 not checked. [2022-11-18 18:44:16,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 901558 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125055 trivial. 0 not checked. [2022-11-18 18:44:30,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:30,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463962951] [2022-11-18 18:44:30,477 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:44:30,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177612473] [2022-11-18 18:44:30,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177612473] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:30,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:44:30,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-18 18:44:30,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378020139] [2022-11-18 18:44:30,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:30,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 18:44:30,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:30,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 18:44:30,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:44:30,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 217 [2022-11-18 18:44:30,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 566 transitions, 5527 flow. Second operand has 21 states, 21 states have (on average 192.42857142857142) internal successors, (4041), 21 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:30,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:44:30,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 217 [2022-11-18 18:44:30,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:45:01,933 INFO L130 PetriNetUnfolder]: 15/12612 cut-off events. [2022-11-18 18:45:01,933 INFO L131 PetriNetUnfolder]: For 32632/32632 co-relation queries the response was YES. [2022-11-18 18:45:01,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28965 conditions, 12612 events. 15/12612 cut-off events. For 32632/32632 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 245 event pairs, 0 based on Foata normal form. 3/12602 useless extension candidates. Maximal degree in co-relation 25928. Up to 720 conditions per place. [2022-11-18 18:45:01,966 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 107 selfloop transitions, 30 changer transitions 0/657 dead transitions. [2022-11-18 18:45:01,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 657 transitions, 6267 flow [2022-11-18 18:45:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:45:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 18:45:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5739 transitions. [2022-11-18 18:45:01,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8815668202764977 [2022-11-18 18:45:01,980 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5739 transitions. [2022-11-18 18:45:01,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5739 transitions. [2022-11-18 18:45:01,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:45:01,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5739 transitions. [2022-11-18 18:45:01,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 191.3) internal successors, (5739), 30 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:45:02,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 217.0) internal successors, (6727), 31 states have internal predecessors, (6727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:45:02,002 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 217.0) internal successors, (6727), 31 states have internal predecessors, (6727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:45:02,003 INFO L175 Difference]: Start difference. First operand has 461 places, 566 transitions, 5527 flow. Second operand 30 states and 5739 transitions. [2022-11-18 18:45:02,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 657 transitions, 6267 flow [2022-11-18 18:45:02,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 657 transitions, 6255 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 18:45:02,182 INFO L231 Difference]: Finished difference. Result has 488 places, 576 transitions, 5726 flow [2022-11-18 18:45:02,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=5515, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5726, PETRI_PLACES=488, PETRI_TRANSITIONS=576} [2022-11-18 18:45:02,184 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, 281 predicate places. [2022-11-18 18:45:02,184 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 576 transitions, 5726 flow [2022-11-18 18:45:02,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 192.42857142857142) internal successors, (4041), 21 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:45:02,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:45:02,188 INFO L209 CegarLoopForPetriNet]: trace histogram [300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:02,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 18:45:02,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:45:02,410 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:45:02,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:02,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1728833935, now seen corresponding path program 5 times [2022-11-18 18:45:02,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:02,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726716677] [2022-11-18 18:45:02,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:02,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:04,081 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:45:04,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30956618] [2022-11-18 18:45:04,083 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:45:04,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:45:04,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:45:04,086 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:45:04,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13dbea57-9d6b-4f78-bce9-887cef7fe52b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process