./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:26:40,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:26:40,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:26:40,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:26:40,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:26:40,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:26:40,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:26:40,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:26:40,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:26:40,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:26:40,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:26:40,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:26:40,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:26:40,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:26:40,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:26:40,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:26:40,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:26:40,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:26:40,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:26:40,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:26:40,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:26:40,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:26:40,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:26:40,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:26:40,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:26:40,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:26:40,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:26:40,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:26:40,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:26:40,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:26:40,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:26:40,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:26:40,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:26:40,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:26:40,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:26:40,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:26:40,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:26:40,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:26:40,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:26:40,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:26:40,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:26:40,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:26:40,437 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:26:40,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:26:40,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:26:40,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:26:40,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:26:40,439 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:26:40,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:26:40,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:26:40,440 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:26:40,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:26:40,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:26:40,441 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:26:40,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:26:40,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:26:40,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:26:40,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:26:40,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:26:40,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:26:40,443 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:26:40,444 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:26:40,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:26:40,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:26:40,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:26:40,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:26:40,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:26:40,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:26:40,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:26:40,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:26:40,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:26:40,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:26:40,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:26:40,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:26:40,447 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:26:40,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:26:40,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:26:40,448 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_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2022-11-16 12:26:40,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:26:40,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:26:40,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:26:40,745 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:26:40,746 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:26:40,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-11-16 12:26:40,820 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/data/ba4081e9f/7c4ee89d622141ffa5379d32956614c4/FLAGc593071a6 [2022-11-16 12:26:41,516 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:26:41,517 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-11-16 12:26:41,548 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/data/ba4081e9f/7c4ee89d622141ffa5379d32956614c4/FLAGc593071a6 [2022-11-16 12:26:41,769 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/data/ba4081e9f/7c4ee89d622141ffa5379d32956614c4 [2022-11-16 12:26:41,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:26:41,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:26:41,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:26:41,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:26:41,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:26:41,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:26:41" (1/1) ... [2022-11-16 12:26:41,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3737e7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:41, skipping insertion in model container [2022-11-16 12:26:41,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:26:41" (1/1) ... [2022-11-16 12:26:41,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:26:41,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:26:42,541 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-11-16 12:26:42,551 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:26:42,552 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:26:42,553 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:26:42,553 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:26:42,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:26:42,604 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:26:42,650 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-11-16 12:26:42,654 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:26:42,654 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:26:42,655 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:26:42,656 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:26:42,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:26:42,744 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:26:42,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:42 WrapperNode [2022-11-16 12:26:42,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:26:42,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:26:42,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:26:42,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:26:42,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:42" (1/1) ... [2022-11-16 12:26:42,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:42" (1/1) ... [2022-11-16 12:26:42,838 INFO L138 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 239 [2022-11-16 12:26:42,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:26:42,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:26:42,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:26:42,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:26:42,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:42" (1/1) ... [2022-11-16 12:26:42,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:42" (1/1) ... [2022-11-16 12:26:42,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:42" (1/1) ... [2022-11-16 12:26:42,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:42" (1/1) ... [2022-11-16 12:26:42,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:42" (1/1) ... [2022-11-16 12:26:42,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:42" (1/1) ... [2022-11-16 12:26:42,937 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:42" (1/1) ... [2022-11-16 12:26:42,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:42" (1/1) ... [2022-11-16 12:26:42,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:26:42,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:26:42,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:26:42,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:26:42,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:42" (1/1) ... [2022-11-16 12:26:42,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:26:42,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:43,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:26:43,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:26:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:26:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:26:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:26:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:26:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:26:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:26:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:26:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:26:43,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:26:43,063 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:26:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:26:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:26:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:26:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:26:43,067 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:26:43,415 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:26:43,417 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:26:44,111 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:26:44,123 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:26:44,123 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-16 12:26:44,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:26:44 BoogieIcfgContainer [2022-11-16 12:26:44,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:26:44,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:26:44,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:26:44,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:26:44,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:26:41" (1/3) ... [2022-11-16 12:26:44,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359aa1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:26:44, skipping insertion in model container [2022-11-16 12:26:44,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:26:42" (2/3) ... [2022-11-16 12:26:44,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359aa1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:26:44, skipping insertion in model container [2022-11-16 12:26:44,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:26:44" (3/3) ... [2022-11-16 12:26:44,162 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2022-11-16 12:26:44,180 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:26:44,192 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:26:44,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-16 12:26:44,193 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:26:44,405 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:26:44,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 287 transitions, 582 flow [2022-11-16 12:26:44,585 INFO L130 PetriNetUnfolder]: 29/304 cut-off events. [2022-11-16 12:26:44,586 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-16 12:26:44,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 304 events. 29/304 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 750 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 167. Up to 4 conditions per place. [2022-11-16 12:26:44,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 287 transitions, 582 flow [2022-11-16 12:26:44,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 284 transitions, 576 flow [2022-11-16 12:26:44,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:26:44,623 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;@609e9a4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:26:44,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-16 12:26:44,641 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-16 12:26:44,641 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:26:44,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:44,643 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] [2022-11-16 12:26:44,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:26:44,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:44,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1356515754, now seen corresponding path program 1 times [2022-11-16 12:26:44,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:44,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330292413] [2022-11-16 12:26:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:44,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:44,839 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:26:44,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760712241] [2022-11-16 12:26:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:44,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:44,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:44,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:44,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:26:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:45,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:26:45,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:45,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:45,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:45,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330292413] [2022-11-16 12:26:45,142 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:26:45,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760712241] [2022-11-16 12:26:45,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760712241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:45,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:45,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:26:45,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349737960] [2022-11-16 12:26:45,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:45,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:26:45,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:45,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:26:45,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:26:45,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 287 [2022-11-16 12:26:45,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 284 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:45,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:45,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 287 [2022-11-16 12:26:45,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:45,369 INFO L130 PetriNetUnfolder]: 7/338 cut-off events. [2022-11-16 12:26:45,369 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-16 12:26:45,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 338 events. 7/338 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 839 event pairs, 0 based on Foata normal form. 22/326 useless extension candidates. Maximal degree in co-relation 244. Up to 17 conditions per place. [2022-11-16 12:26:45,373 INFO L137 encePairwiseOnDemand]: 262/287 looper letters, 23 selfloop transitions, 2 changer transitions 2/272 dead transitions. [2022-11-16 12:26:45,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 272 transitions, 602 flow [2022-11-16 12:26:45,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:26:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:26:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 800 transitions. [2022-11-16 12:26:45,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9291521486643438 [2022-11-16 12:26:45,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 800 transitions. [2022-11-16 12:26:45,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 800 transitions. [2022-11-16 12:26:45,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:45,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 800 transitions. [2022-11-16 12:26:45,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:45,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:45,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:45,432 INFO L175 Difference]: Start difference. First operand has 261 places, 284 transitions, 576 flow. Second operand 3 states and 800 transitions. [2022-11-16 12:26:45,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 272 transitions, 602 flow [2022-11-16 12:26:45,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 272 transitions, 602 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:26:45,445 INFO L231 Difference]: Finished difference. Result has 263 places, 262 transitions, 546 flow [2022-11-16 12:26:45,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=263, PETRI_TRANSITIONS=262} [2022-11-16 12:26:45,462 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 2 predicate places. [2022-11-16 12:26:45,462 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 262 transitions, 546 flow [2022-11-16 12:26:45,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:45,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:45,463 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] [2022-11-16 12:26:45,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:45,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 12:26:45,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:26:45,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:45,666 INFO L85 PathProgramCache]: Analyzing trace with hash 897686301, now seen corresponding path program 1 times [2022-11-16 12:26:45,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:45,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843992424] [2022-11-16 12:26:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:45,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:45,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:45,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843992424] [2022-11-16 12:26:45,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843992424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:45,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:45,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:45,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396864250] [2022-11-16 12:26:45,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:45,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:26:45,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:45,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:26:45,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:26:45,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 287 [2022-11-16 12:26:45,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 262 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:45,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:45,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 287 [2022-11-16 12:26:45,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:46,052 INFO L130 PetriNetUnfolder]: 7/420 cut-off events. [2022-11-16 12:26:46,052 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-11-16 12:26:46,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 420 events. 7/420 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 947 event pairs, 0 based on Foata normal form. 2/389 useless extension candidates. Maximal degree in co-relation 341. Up to 22 conditions per place. [2022-11-16 12:26:46,056 INFO L137 encePairwiseOnDemand]: 282/287 looper letters, 17 selfloop transitions, 2 changer transitions 0/268 dead transitions. [2022-11-16 12:26:46,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 268 transitions, 596 flow [2022-11-16 12:26:46,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:26:46,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:26:46,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 781 transitions. [2022-11-16 12:26:46,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070847851335656 [2022-11-16 12:26:46,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 781 transitions. [2022-11-16 12:26:46,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 781 transitions. [2022-11-16 12:26:46,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:46,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 781 transitions. [2022-11-16 12:26:46,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:46,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:46,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:46,068 INFO L175 Difference]: Start difference. First operand has 263 places, 262 transitions, 546 flow. Second operand 3 states and 781 transitions. [2022-11-16 12:26:46,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 268 transitions, 596 flow [2022-11-16 12:26:46,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 268 transitions, 594 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:26:46,083 INFO L231 Difference]: Finished difference. Result has 263 places, 263 transitions, 560 flow [2022-11-16 12:26:46,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=560, PETRI_PLACES=263, PETRI_TRANSITIONS=263} [2022-11-16 12:26:46,085 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 2 predicate places. [2022-11-16 12:26:46,086 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 263 transitions, 560 flow [2022-11-16 12:26:46,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:46,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:46,087 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] [2022-11-16 12:26:46,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:26:46,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:26:46,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:46,090 INFO L85 PathProgramCache]: Analyzing trace with hash -326552014, now seen corresponding path program 1 times [2022-11-16 12:26:46,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:46,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012438695] [2022-11-16 12:26:46,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:46,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:46,179 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:26:46,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698534183] [2022-11-16 12:26:46,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:46,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:46,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:46,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:46,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:26:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:46,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:26:46,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:46,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:46,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:46,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:46,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012438695] [2022-11-16 12:26:46,619 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:26:46,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698534183] [2022-11-16 12:26:46,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698534183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:46,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:46,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:46,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456907973] [2022-11-16 12:26:46,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:46,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:46,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:46,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:46,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:26:46,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-16 12:26:46,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 263 transitions, 560 flow. Second operand has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:46,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:46,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-16 12:26:46,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:46,857 INFO L130 PetriNetUnfolder]: 7/420 cut-off events. [2022-11-16 12:26:46,857 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-16 12:26:46,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 420 events. 7/420 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 951 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 370. Up to 30 conditions per place. [2022-11-16 12:26:46,860 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 23 selfloop transitions, 5 changer transitions 0/272 dead transitions. [2022-11-16 12:26:46,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 272 transitions, 634 flow [2022-11-16 12:26:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:26:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:26:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1269 transitions. [2022-11-16 12:26:46,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8843205574912892 [2022-11-16 12:26:46,867 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1269 transitions. [2022-11-16 12:26:46,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1269 transitions. [2022-11-16 12:26:46,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:46,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1269 transitions. [2022-11-16 12:26:46,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 253.8) internal successors, (1269), 5 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:46,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:46,880 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:46,880 INFO L175 Difference]: Start difference. First operand has 263 places, 263 transitions, 560 flow. Second operand 5 states and 1269 transitions. [2022-11-16 12:26:46,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 272 transitions, 634 flow [2022-11-16 12:26:46,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 272 transitions, 632 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:26:46,889 INFO L231 Difference]: Finished difference. Result has 270 places, 266 transitions, 592 flow [2022-11-16 12:26:46,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=592, PETRI_PLACES=270, PETRI_TRANSITIONS=266} [2022-11-16 12:26:46,892 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 9 predicate places. [2022-11-16 12:26:46,893 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 266 transitions, 592 flow [2022-11-16 12:26:46,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:46,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:46,894 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] [2022-11-16 12:26:46,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:47,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:47,104 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:26:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1533177195, now seen corresponding path program 1 times [2022-11-16 12:26:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:47,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841573020] [2022-11-16 12:26:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:47,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:47,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:26:47,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193438146] [2022-11-16 12:26:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:47,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:47,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:47,186 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:47,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:26:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:47,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:26:47,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:47,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:47,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:47,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841573020] [2022-11-16 12:26:47,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:26:47,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193438146] [2022-11-16 12:26:47,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193438146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:47,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:47,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:47,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401355923] [2022-11-16 12:26:47,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:47,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:47,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:47,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:47,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:26:47,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-16 12:26:47,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 266 transitions, 592 flow. Second operand has 4 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:47,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:47,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-16 12:26:47,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:47,692 INFO L130 PetriNetUnfolder]: 7/416 cut-off events. [2022-11-16 12:26:47,693 INFO L131 PetriNetUnfolder]: For 36/37 co-relation queries the response was YES. [2022-11-16 12:26:47,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 416 events. 7/416 cut-off events. For 36/37 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 939 event pairs, 0 based on Foata normal form. 4/397 useless extension candidates. Maximal degree in co-relation 382. Up to 28 conditions per place. [2022-11-16 12:26:47,695 INFO L137 encePairwiseOnDemand]: 283/287 looper letters, 16 selfloop transitions, 5 changer transitions 0/265 dead transitions. [2022-11-16 12:26:47,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 265 transitions, 632 flow [2022-11-16 12:26:47,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:26:47,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:26:47,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1011 transitions. [2022-11-16 12:26:47,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8806620209059234 [2022-11-16 12:26:47,699 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1011 transitions. [2022-11-16 12:26:47,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1011 transitions. [2022-11-16 12:26:47,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:47,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1011 transitions. [2022-11-16 12:26:47,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:47,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:47,708 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:47,709 INFO L175 Difference]: Start difference. First operand has 270 places, 266 transitions, 592 flow. Second operand 4 states and 1011 transitions. [2022-11-16 12:26:47,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 265 transitions, 632 flow [2022-11-16 12:26:47,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 265 transitions, 623 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:26:47,716 INFO L231 Difference]: Finished difference. Result has 270 places, 265 transitions, 594 flow [2022-11-16 12:26:47,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=594, PETRI_PLACES=270, PETRI_TRANSITIONS=265} [2022-11-16 12:26:47,718 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 9 predicate places. [2022-11-16 12:26:47,718 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 265 transitions, 594 flow [2022-11-16 12:26:47,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:47,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:47,720 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:47,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:47,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:47,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:26:47,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:47,926 INFO L85 PathProgramCache]: Analyzing trace with hash -134957359, now seen corresponding path program 1 times [2022-11-16 12:26:47,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:47,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838292740] [2022-11-16 12:26:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:47,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:47,956 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:26:47,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892908929] [2022-11-16 12:26:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:47,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:47,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:47,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:47,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:26:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:48,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:26:48,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:48,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:48,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:48,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838292740] [2022-11-16 12:26:48,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:26:48,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892908929] [2022-11-16 12:26:48,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892908929] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:48,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:26:48,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 12:26:48,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5778634] [2022-11-16 12:26:48,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:48,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:26:48,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:48,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:26:48,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:26:48,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-16 12:26:48,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 265 transitions, 594 flow. Second operand has 8 states, 8 states have (on average 250.875) internal successors, (2007), 8 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:48,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:48,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-16 12:26:48,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:48,506 INFO L130 PetriNetUnfolder]: 7/502 cut-off events. [2022-11-16 12:26:48,507 INFO L131 PetriNetUnfolder]: For 52/53 co-relation queries the response was YES. [2022-11-16 12:26:48,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 502 events. 7/502 cut-off events. For 52/53 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 699 event pairs, 0 based on Foata normal form. 6/485 useless extension candidates. Maximal degree in co-relation 509. Up to 22 conditions per place. [2022-11-16 12:26:48,509 INFO L137 encePairwiseOnDemand]: 280/287 looper letters, 29 selfloop transitions, 10 changer transitions 0/283 dead transitions. [2022-11-16 12:26:48,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 283 transitions, 726 flow [2022-11-16 12:26:48,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:26:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:26:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2273 transitions. [2022-11-16 12:26:48,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8799845141308555 [2022-11-16 12:26:48,516 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2273 transitions. [2022-11-16 12:26:48,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2273 transitions. [2022-11-16 12:26:48,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:48,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2273 transitions. [2022-11-16 12:26:48,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 252.55555555555554) internal successors, (2273), 9 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:48,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 287.0) internal successors, (2870), 10 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:48,533 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 287.0) internal successors, (2870), 10 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:48,533 INFO L175 Difference]: Start difference. First operand has 270 places, 265 transitions, 594 flow. Second operand 9 states and 2273 transitions. [2022-11-16 12:26:48,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 283 transitions, 726 flow [2022-11-16 12:26:48,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 283 transitions, 713 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:26:48,541 INFO L231 Difference]: Finished difference. Result has 281 places, 269 transitions, 644 flow [2022-11-16 12:26:48,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=644, PETRI_PLACES=281, PETRI_TRANSITIONS=269} [2022-11-16 12:26:48,542 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 20 predicate places. [2022-11-16 12:26:48,542 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 269 transitions, 644 flow [2022-11-16 12:26:48,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 250.875) internal successors, (2007), 8 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:48,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:48,544 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:48,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:48,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:48,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:26:48,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1827181646, now seen corresponding path program 1 times [2022-11-16 12:26:48,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:48,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232660666] [2022-11-16 12:26:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:48,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:48,795 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:26:48,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811099206] [2022-11-16 12:26:48,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:48,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:48,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:48,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:48,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:26:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:49,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:26:49,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:49,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:49,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:49,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232660666] [2022-11-16 12:26:49,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:26:49,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811099206] [2022-11-16 12:26:49,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811099206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:49,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:26:49,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:26:49,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864953865] [2022-11-16 12:26:49,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:49,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:26:49,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:49,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:26:49,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:26:49,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-16 12:26:49,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 269 transitions, 644 flow. Second operand has 14 states, 14 states have (on average 251.64285714285714) internal successors, (3523), 14 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:49,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:49,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-16 12:26:49,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:49,947 INFO L130 PetriNetUnfolder]: 13/792 cut-off events. [2022-11-16 12:26:49,947 INFO L131 PetriNetUnfolder]: For 134/136 co-relation queries the response was YES. [2022-11-16 12:26:49,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 792 events. 13/792 cut-off events. For 134/136 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1980 event pairs, 0 based on Foata normal form. 4/750 useless extension candidates. Maximal degree in co-relation 767. Up to 19 conditions per place. [2022-11-16 12:26:49,952 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 37 selfloop transitions, 16 changer transitions 0/297 dead transitions. [2022-11-16 12:26:49,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 297 transitions, 860 flow [2022-11-16 12:26:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:26:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:26:49,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3775 transitions. [2022-11-16 12:26:49,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8768873403019745 [2022-11-16 12:26:49,964 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3775 transitions. [2022-11-16 12:26:49,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3775 transitions. [2022-11-16 12:26:49,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:49,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3775 transitions. [2022-11-16 12:26:49,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 251.66666666666666) internal successors, (3775), 15 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:49,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:49,991 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:49,991 INFO L175 Difference]: Start difference. First operand has 281 places, 269 transitions, 644 flow. Second operand 15 states and 3775 transitions. [2022-11-16 12:26:49,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 297 transitions, 860 flow [2022-11-16 12:26:49,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 297 transitions, 842 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 12:26:50,001 INFO L231 Difference]: Finished difference. Result has 290 places, 273 transitions, 693 flow [2022-11-16 12:26:50,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=693, PETRI_PLACES=290, PETRI_TRANSITIONS=273} [2022-11-16 12:26:50,002 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 29 predicate places. [2022-11-16 12:26:50,003 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 273 transitions, 693 flow [2022-11-16 12:26:50,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 251.64285714285714) internal successors, (3523), 14 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:50,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:50,005 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:50,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:50,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:50,221 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:26:50,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:50,222 INFO L85 PathProgramCache]: Analyzing trace with hash 426036305, now seen corresponding path program 2 times [2022-11-16 12:26:50,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:50,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19706710] [2022-11-16 12:26:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:50,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:50,267 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:26:50,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957965761] [2022-11-16 12:26:50,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:26:50,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:50,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:50,271 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:50,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:26:50,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:26:50,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:26:50,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:26:50,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-16 12:26:50,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:50,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:50,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19706710] [2022-11-16 12:26:50,653 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:26:50,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957965761] [2022-11-16 12:26:50,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957965761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:50,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:50,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:50,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044021209] [2022-11-16 12:26:50,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:50,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:50,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:50,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:50,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:26:50,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-16 12:26:50,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 273 transitions, 693 flow. Second operand has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:50,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:50,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-16 12:26:50,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:50,866 INFO L130 PetriNetUnfolder]: 13/792 cut-off events. [2022-11-16 12:26:50,866 INFO L131 PetriNetUnfolder]: For 135/137 co-relation queries the response was YES. [2022-11-16 12:26:50,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 792 events. 13/792 cut-off events. For 135/137 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1976 event pairs, 0 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 773. Up to 50 conditions per place. [2022-11-16 12:26:50,870 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 29 selfloop transitions, 5 changer transitions 0/285 dead transitions. [2022-11-16 12:26:50,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 285 transitions, 785 flow [2022-11-16 12:26:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:26:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:26:50,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1260 transitions. [2022-11-16 12:26:50,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8780487804878049 [2022-11-16 12:26:50,874 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1260 transitions. [2022-11-16 12:26:50,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1260 transitions. [2022-11-16 12:26:50,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:50,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1260 transitions. [2022-11-16 12:26:50,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:50,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:50,882 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:50,882 INFO L175 Difference]: Start difference. First operand has 290 places, 273 transitions, 693 flow. Second operand 5 states and 1260 transitions. [2022-11-16 12:26:50,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 285 transitions, 785 flow [2022-11-16 12:26:50,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 285 transitions, 726 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-16 12:26:50,889 INFO L231 Difference]: Finished difference. Result has 285 places, 276 transitions, 668 flow [2022-11-16 12:26:50,889 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=668, PETRI_PLACES=285, PETRI_TRANSITIONS=276} [2022-11-16 12:26:50,890 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 24 predicate places. [2022-11-16 12:26:50,890 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 276 transitions, 668 flow [2022-11-16 12:26:50,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:50,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:50,891 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:50,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:51,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:51,097 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:26:51,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:51,098 INFO L85 PathProgramCache]: Analyzing trace with hash 322224053, now seen corresponding path program 1 times [2022-11-16 12:26:51,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:51,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630644388] [2022-11-16 12:26:51,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:51,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:51,132 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:26:51,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998048654] [2022-11-16 12:26:51,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:51,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:51,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:51,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:51,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:26:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:51,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:26:51,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:51,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:51,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:51,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630644388] [2022-11-16 12:26:51,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:26:51,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998048654] [2022-11-16 12:26:51,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998048654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:51,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:26:51,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:26:51,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878212543] [2022-11-16 12:26:51,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:51,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:26:51,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:51,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:26:51,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:26:51,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-16 12:26:51,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 276 transitions, 668 flow. Second operand has 16 states, 16 states have (on average 251.6875) internal successors, (4027), 16 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:51,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:51,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-16 12:26:51,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:52,435 INFO L130 PetriNetUnfolder]: 7/836 cut-off events. [2022-11-16 12:26:52,436 INFO L131 PetriNetUnfolder]: For 122/123 co-relation queries the response was YES. [2022-11-16 12:26:52,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 836 events. 7/836 cut-off events. For 122/123 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 711 event pairs, 0 based on Foata normal form. 8/825 useless extension candidates. Maximal degree in co-relation 1011. Up to 20 conditions per place. [2022-11-16 12:26:52,439 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 60 selfloop transitions, 22 changer transitions 0/329 dead transitions. [2022-11-16 12:26:52,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 329 transitions, 1025 flow [2022-11-16 12:26:52,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:26:52,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:26:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5293 transitions. [2022-11-16 12:26:52,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8782147005143521 [2022-11-16 12:26:52,452 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5293 transitions. [2022-11-16 12:26:52,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5293 transitions. [2022-11-16 12:26:52,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:52,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5293 transitions. [2022-11-16 12:26:52,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 252.04761904761904) internal successors, (5293), 21 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:52,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 287.0) internal successors, (6314), 22 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:52,486 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 287.0) internal successors, (6314), 22 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:52,487 INFO L175 Difference]: Start difference. First operand has 285 places, 276 transitions, 668 flow. Second operand 21 states and 5293 transitions. [2022-11-16 12:26:52,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 329 transitions, 1025 flow [2022-11-16 12:26:52,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 329 transitions, 1015 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-16 12:26:52,496 INFO L231 Difference]: Finished difference. Result has 309 places, 285 transitions, 778 flow [2022-11-16 12:26:52,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=778, PETRI_PLACES=309, PETRI_TRANSITIONS=285} [2022-11-16 12:26:52,501 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 48 predicate places. [2022-11-16 12:26:52,501 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 285 transitions, 778 flow [2022-11-16 12:26:52,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 251.6875) internal successors, (4027), 16 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:52,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:52,503 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] [2022-11-16 12:26:52,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:52,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 12:26:52,710 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:26:52,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:52,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1832840011, now seen corresponding path program 2 times [2022-11-16 12:26:52,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:52,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260483319] [2022-11-16 12:26:52,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:52,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:52,789 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:26:52,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244674352] [2022-11-16 12:26:52,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:26:52,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:52,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:52,791 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:52,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:26:53,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:26:53,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:26:53,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:26:53,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-16 12:26:53,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:53,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:53,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260483319] [2022-11-16 12:26:53,589 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:26:53,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244674352] [2022-11-16 12:26:53,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244674352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:53,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:53,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:53,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354805238] [2022-11-16 12:26:53,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:53,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:53,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:53,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:53,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:26:53,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-16 12:26:53,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 285 transitions, 778 flow. Second operand has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:53,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:53,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-16 12:26:53,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:53,814 INFO L130 PetriNetUnfolder]: 7/834 cut-off events. [2022-11-16 12:26:53,814 INFO L131 PetriNetUnfolder]: For 186/187 co-relation queries the response was YES. [2022-11-16 12:26:53,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 834 events. 7/834 cut-off events. For 186/187 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 705 event pairs, 0 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 1012. Up to 80 conditions per place. [2022-11-16 12:26:53,817 INFO L137 encePairwiseOnDemand]: 283/287 looper letters, 18 selfloop transitions, 5 changer transitions 0/283 dead transitions. [2022-11-16 12:26:53,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 283 transitions, 814 flow [2022-11-16 12:26:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:26:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:26:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1001 transitions. [2022-11-16 12:26:53,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8719512195121951 [2022-11-16 12:26:53,820 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1001 transitions. [2022-11-16 12:26:53,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1001 transitions. [2022-11-16 12:26:53,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:53,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1001 transitions. [2022-11-16 12:26:53,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:53,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:53,826 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:53,826 INFO L175 Difference]: Start difference. First operand has 309 places, 285 transitions, 778 flow. Second operand 4 states and 1001 transitions. [2022-11-16 12:26:53,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 283 transitions, 814 flow [2022-11-16 12:26:53,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 283 transitions, 791 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-16 12:26:53,833 INFO L231 Difference]: Finished difference. Result has 300 places, 283 transitions, 755 flow [2022-11-16 12:26:53,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=755, PETRI_PLACES=300, PETRI_TRANSITIONS=283} [2022-11-16 12:26:53,834 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 39 predicate places. [2022-11-16 12:26:53,834 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 283 transitions, 755 flow [2022-11-16 12:26:53,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:53,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:53,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:53,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:54,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:54,041 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:26:54,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:54,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1027237298, now seen corresponding path program 1 times [2022-11-16 12:26:54,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:54,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457756695] [2022-11-16 12:26:54,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:54,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:54,114 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:26:54,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14753694] [2022-11-16 12:26:54,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:54,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:54,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:54,115 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:54,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:26:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:54,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:26:54,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:55,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 1 proven. 868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:56,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:56,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457756695] [2022-11-16 12:26:56,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:26:56,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14753694] [2022-11-16 12:26:56,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14753694] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:56,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:26:56,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-16 12:26:56,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178061073] [2022-11-16 12:26:56,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:56,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:26:56,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:56,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:26:56,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:26:56,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-16 12:26:56,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 283 transitions, 755 flow. Second operand has 32 states, 32 states have (on average 252.125) internal successors, (8068), 32 states have internal predecessors, (8068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:56,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:56,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-16 12:26:56,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:57,754 INFO L130 PetriNetUnfolder]: 7/1506 cut-off events. [2022-11-16 12:26:57,755 INFO L131 PetriNetUnfolder]: For 731/732 co-relation queries the response was YES. [2022-11-16 12:26:57,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 1506 events. 7/1506 cut-off events. For 731/732 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 744 event pairs, 0 based on Foata normal form. 16/1503 useless extension candidates. Maximal degree in co-relation 2126. Up to 38 conditions per place. [2022-11-16 12:26:57,761 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 124 selfloop transitions, 46 changer transitions 0/415 dead transitions. [2022-11-16 12:26:57,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 415 transitions, 1691 flow [2022-11-16 12:26:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 12:26:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 12:26:57,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 11337 transitions. [2022-11-16 12:26:57,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8778164924506388 [2022-11-16 12:26:57,792 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 11337 transitions. [2022-11-16 12:26:57,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 11337 transitions. [2022-11-16 12:26:57,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:57,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 11337 transitions. [2022-11-16 12:26:57,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 251.93333333333334) internal successors, (11337), 45 states have internal predecessors, (11337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:57,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 287.0) internal successors, (13202), 46 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:57,866 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 287.0) internal successors, (13202), 46 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:57,867 INFO L175 Difference]: Start difference. First operand has 300 places, 283 transitions, 755 flow. Second operand 45 states and 11337 transitions. [2022-11-16 12:26:57,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 415 transitions, 1691 flow [2022-11-16 12:26:57,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 415 transitions, 1681 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:26:57,880 INFO L231 Difference]: Finished difference. Result has 350 places, 308 transitions, 1068 flow [2022-11-16 12:26:57,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1068, PETRI_PLACES=350, PETRI_TRANSITIONS=308} [2022-11-16 12:26:57,882 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 89 predicate places. [2022-11-16 12:26:57,882 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 308 transitions, 1068 flow [2022-11-16 12:26:57,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 252.125) internal successors, (8068), 32 states have internal predecessors, (8068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:57,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:57,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:57,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:58,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:26:58,096 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:26:58,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash 287313842, now seen corresponding path program 2 times [2022-11-16 12:26:58,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:58,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469065951] [2022-11-16 12:26:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:58,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:58,236 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:26:58,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878313816] [2022-11-16 12:26:58,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:26:58,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:58,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:58,240 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:58,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:26:58,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:26:58,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:26:58,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:26:58,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4321 trivial. 0 not checked. [2022-11-16 12:26:58,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:58,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:58,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469065951] [2022-11-16 12:26:58,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:26:58,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878313816] [2022-11-16 12:26:58,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878313816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:58,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:58,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:26:58,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389389415] [2022-11-16 12:26:58,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:58,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:58,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:58,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:58,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:26:58,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 287 [2022-11-16 12:26:58,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 308 transitions, 1068 flow. Second operand has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:58,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:26:58,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 287 [2022-11-16 12:26:58,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:26:59,477 INFO L130 PetriNetUnfolder]: 7/1494 cut-off events. [2022-11-16 12:26:59,478 INFO L131 PetriNetUnfolder]: For 742/761 co-relation queries the response was YES. [2022-11-16 12:26:59,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2113 conditions, 1494 events. 7/1494 cut-off events. For 742/761 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 681 event pairs, 0 based on Foata normal form. 3/1481 useless extension candidates. Maximal degree in co-relation 1955. Up to 38 conditions per place. [2022-11-16 12:26:59,482 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 11 selfloop transitions, 4 changer transitions 0/309 dead transitions. [2022-11-16 12:26:59,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 309 transitions, 1100 flow [2022-11-16 12:26:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:26:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:26:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1277 transitions. [2022-11-16 12:26:59,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8898954703832752 [2022-11-16 12:26:59,486 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1277 transitions. [2022-11-16 12:26:59,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1277 transitions. [2022-11-16 12:26:59,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:26:59,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1277 transitions. [2022-11-16 12:26:59,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 255.4) internal successors, (1277), 5 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:59,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:59,493 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 287.0) internal successors, (1722), 6 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:59,493 INFO L175 Difference]: Start difference. First operand has 350 places, 308 transitions, 1068 flow. Second operand 5 states and 1277 transitions. [2022-11-16 12:26:59,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 309 transitions, 1100 flow [2022-11-16 12:26:59,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 309 transitions, 1043 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-16 12:26:59,507 INFO L231 Difference]: Finished difference. Result has 336 places, 307 transitions, 1021 flow [2022-11-16 12:26:59,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1021, PETRI_PLACES=336, PETRI_TRANSITIONS=307} [2022-11-16 12:26:59,508 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 75 predicate places. [2022-11-16 12:26:59,509 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 307 transitions, 1021 flow [2022-11-16 12:26:59,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:59,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:26:59,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:59,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:59,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:26:59,717 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:26:59,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:59,717 INFO L85 PathProgramCache]: Analyzing trace with hash 316795095, now seen corresponding path program 1 times [2022-11-16 12:26:59,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:59,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645328110] [2022-11-16 12:26:59,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:59,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:59,855 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:26:59,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177073203] [2022-11-16 12:26:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:59,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:59,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:59,857 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:59,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:27:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:00,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 12:27:00,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:02,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4321 backedges. 1 proven. 4320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:04,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:04,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645328110] [2022-11-16 12:27:04,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:27:04,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177073203] [2022-11-16 12:27:04,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177073203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:04,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:27:04,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-16 12:27:04,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130610914] [2022-11-16 12:27:04,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:04,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-16 12:27:04,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:04,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-16 12:27:04,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 12:27:04,542 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 287 [2022-11-16 12:27:04,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 307 transitions, 1021 flow. Second operand has 61 states, 61 states have (on average 252.37704918032787) internal successors, (15395), 61 states have internal predecessors, (15395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:04,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:04,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 287 [2022-11-16 12:27:04,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:08,854 INFO L130 PetriNetUnfolder]: 7/2754 cut-off events. [2022-11-16 12:27:08,855 INFO L131 PetriNetUnfolder]: For 4950/4951 co-relation queries the response was YES. [2022-11-16 12:27:08,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4517 conditions, 2754 events. 7/2754 cut-off events. For 4950/4951 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 756 event pairs, 0 based on Foata normal form. 30/2769 useless extension candidates. Maximal degree in co-relation 4361. Up to 96 conditions per place. [2022-11-16 12:27:08,863 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 244 selfloop transitions, 91 changer transitions 0/579 dead transitions. [2022-11-16 12:27:08,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 579 transitions, 3103 flow [2022-11-16 12:27:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-16 12:27:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-16 12:27:08,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 22669 transitions. [2022-11-16 12:27:08,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8776229190863337 [2022-11-16 12:27:08,887 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 22669 transitions. [2022-11-16 12:27:08,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 22669 transitions. [2022-11-16 12:27:08,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:08,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 22669 transitions. [2022-11-16 12:27:08,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 251.87777777777777) internal successors, (22669), 90 states have internal predecessors, (22669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:08,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 287.0) internal successors, (26117), 91 states have internal predecessors, (26117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:08,966 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 287.0) internal successors, (26117), 91 states have internal predecessors, (26117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:08,966 INFO L175 Difference]: Start difference. First operand has 336 places, 307 transitions, 1021 flow. Second operand 90 states and 22669 transitions. [2022-11-16 12:27:08,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 579 transitions, 3103 flow [2022-11-16 12:27:08,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 579 transitions, 3095 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:27:08,989 INFO L231 Difference]: Finished difference. Result has 437 places, 353 transitions, 1702 flow [2022-11-16 12:27:08,990 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1702, PETRI_PLACES=437, PETRI_TRANSITIONS=353} [2022-11-16 12:27:08,991 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 176 predicate places. [2022-11-16 12:27:08,991 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 353 transitions, 1702 flow [2022-11-16 12:27:08,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 252.37704918032787) internal successors, (15395), 61 states have internal predecessors, (15395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:08,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:08,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:09,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:09,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:09,207 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:27:09,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:09,207 INFO L85 PathProgramCache]: Analyzing trace with hash -720689117, now seen corresponding path program 2 times [2022-11-16 12:27:09,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:09,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623974087] [2022-11-16 12:27:09,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:09,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:09,462 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:27:09,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943021461] [2022-11-16 12:27:09,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:27:09,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:09,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:09,464 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:09,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:27:10,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:27:10,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:27:10,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:27:10,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-16 12:27:10,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:27:10,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:10,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623974087] [2022-11-16 12:27:10,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:27:10,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943021461] [2022-11-16 12:27:10,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943021461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:10,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:10,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:10,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125221149] [2022-11-16 12:27:10,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:10,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:27:10,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:27:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:27:10,762 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 287 [2022-11-16 12:27:10,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 353 transitions, 1702 flow. Second operand has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:10,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:10,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 287 [2022-11-16 12:27:10,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:12,310 INFO L130 PetriNetUnfolder]: 7/2753 cut-off events. [2022-11-16 12:27:12,310 INFO L131 PetriNetUnfolder]: For 2968/2985 co-relation queries the response was YES. [2022-11-16 12:27:12,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4212 conditions, 2753 events. 7/2753 cut-off events. For 2968/2985 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 753 event pairs, 0 based on Foata normal form. 1/2740 useless extension candidates. Maximal degree in co-relation 4037. Up to 96 conditions per place. [2022-11-16 12:27:12,319 INFO L137 encePairwiseOnDemand]: 283/287 looper letters, 9 selfloop transitions, 3 changer transitions 0/352 dead transitions. [2022-11-16 12:27:12,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 352 transitions, 1724 flow [2022-11-16 12:27:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:27:12,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:27:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1021 transitions. [2022-11-16 12:27:12,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8893728222996515 [2022-11-16 12:27:12,322 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1021 transitions. [2022-11-16 12:27:12,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1021 transitions. [2022-11-16 12:27:12,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:12,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1021 transitions. [2022-11-16 12:27:12,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.25) internal successors, (1021), 4 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:12,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:12,326 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:12,326 INFO L175 Difference]: Start difference. First operand has 437 places, 353 transitions, 1702 flow. Second operand 4 states and 1021 transitions. [2022-11-16 12:27:12,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 352 transitions, 1724 flow [2022-11-16 12:27:12,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 352 transitions, 1605 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-16 12:27:12,366 INFO L231 Difference]: Finished difference. Result has 397 places, 352 transitions, 1587 flow [2022-11-16 12:27:12,367 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1587, PETRI_PLACES=397, PETRI_TRANSITIONS=352} [2022-11-16 12:27:12,369 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 136 predicate places. [2022-11-16 12:27:12,369 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 352 transitions, 1587 flow [2022-11-16 12:27:12,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:12,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:12,371 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:12,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:12,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:12,578 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:27:12,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:12,579 INFO L85 PathProgramCache]: Analyzing trace with hash 719844686, now seen corresponding path program 1 times [2022-11-16 12:27:12,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:12,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283721304] [2022-11-16 12:27:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:12,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:12,810 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:27:12,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791576546] [2022-11-16 12:27:12,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:12,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:12,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:12,813 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:12,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:27:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:14,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 5238 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:27:14,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-16 12:27:16,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17871 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17870 trivial. 0 not checked. [2022-11-16 12:27:18,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:18,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283721304] [2022-11-16 12:27:18,975 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:27:18,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791576546] [2022-11-16 12:27:18,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791576546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:18,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:27:18,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 12:27:18,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891770778] [2022-11-16 12:27:18,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:18,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:27:18,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:27:18,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:27:18,982 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-16 12:27:18,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 352 transitions, 1587 flow. Second operand has 8 states, 8 states have (on average 248.75) internal successors, (1990), 8 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:18,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:18,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-16 12:27:18,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:22,061 INFO L130 PetriNetUnfolder]: 8/4059 cut-off events. [2022-11-16 12:27:22,061 INFO L131 PetriNetUnfolder]: For 4613/4614 co-relation queries the response was YES. [2022-11-16 12:27:22,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6591 conditions, 4059 events. 8/4059 cut-off events. For 4613/4614 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 564 event pairs, 0 based on Foata normal form. 3/4048 useless extension candidates. Maximal degree in co-relation 6421. Up to 187 conditions per place. [2022-11-16 12:27:22,070 INFO L137 encePairwiseOnDemand]: 280/287 looper letters, 38 selfloop transitions, 9 changer transitions 0/376 dead transitions. [2022-11-16 12:27:22,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 376 transitions, 1743 flow [2022-11-16 12:27:22,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:27:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:27:22,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2255 transitions. [2022-11-16 12:27:22,074 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2022-11-16 12:27:22,074 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2255 transitions. [2022-11-16 12:27:22,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2255 transitions. [2022-11-16 12:27:22,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:22,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2255 transitions. [2022-11-16 12:27:22,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.55555555555554) internal successors, (2255), 9 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:22,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 287.0) internal successors, (2870), 10 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:22,080 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 287.0) internal successors, (2870), 10 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:22,080 INFO L175 Difference]: Start difference. First operand has 397 places, 352 transitions, 1587 flow. Second operand 9 states and 2255 transitions. [2022-11-16 12:27:22,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 376 transitions, 1743 flow [2022-11-16 12:27:22,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 376 transitions, 1737 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:27:22,126 INFO L231 Difference]: Finished difference. Result has 407 places, 356 transitions, 1637 flow [2022-11-16 12:27:22,127 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1637, PETRI_PLACES=407, PETRI_TRANSITIONS=356} [2022-11-16 12:27:22,128 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 146 predicate places. [2022-11-16 12:27:22,128 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 356 transitions, 1637 flow [2022-11-16 12:27:22,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 248.75) internal successors, (1990), 8 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:22,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:22,129 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:22,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:22,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:22,343 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:27:22,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash 937444689, now seen corresponding path program 1 times [2022-11-16 12:27:22,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:22,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718363245] [2022-11-16 12:27:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:22,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:22,537 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:27:22,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190990983] [2022-11-16 12:27:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:22,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:22,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:22,539 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:22,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:27:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:27,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 5339 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:27:27,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 12:27:30,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 0 proven. 1304 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 12:27:33,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:33,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718363245] [2022-11-16 12:27:33,103 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:27:33,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190990983] [2022-11-16 12:27:33,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190990983] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:33,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:27:33,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:27:33,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313512634] [2022-11-16 12:27:33,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:33,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:27:33,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:33,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:27:33,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:27:33,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 287 [2022-11-16 12:27:33,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 356 transitions, 1637 flow. Second operand has 14 states, 14 states have (on average 240.35714285714286) internal successors, (3365), 14 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:33,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:33,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 287 [2022-11-16 12:27:33,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:36,680 INFO L130 PetriNetUnfolder]: 8/4027 cut-off events. [2022-11-16 12:27:36,681 INFO L131 PetriNetUnfolder]: For 4801/4802 co-relation queries the response was YES. [2022-11-16 12:27:36,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7036 conditions, 4027 events. 8/4027 cut-off events. For 4801/4802 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 413 event pairs, 0 based on Foata normal form. 32/4045 useless extension candidates. Maximal degree in co-relation 6864. Up to 307 conditions per place. [2022-11-16 12:27:36,697 INFO L137 encePairwiseOnDemand]: 273/287 looper letters, 224 selfloop transitions, 144 changer transitions 0/596 dead transitions. [2022-11-16 12:27:36,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 596 transitions, 4497 flow [2022-11-16 12:27:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:27:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:27:36,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5743 transitions. [2022-11-16 12:27:36,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8337688734030198 [2022-11-16 12:27:36,707 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5743 transitions. [2022-11-16 12:27:36,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5743 transitions. [2022-11-16 12:27:36,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:36,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5743 transitions. [2022-11-16 12:27:36,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 239.29166666666666) internal successors, (5743), 24 states have internal predecessors, (5743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 287.0) internal successors, (7175), 25 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,737 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 287.0) internal successors, (7175), 25 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,737 INFO L175 Difference]: Start difference. First operand has 407 places, 356 transitions, 1637 flow. Second operand 24 states and 5743 transitions. [2022-11-16 12:27:36,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 596 transitions, 4497 flow [2022-11-16 12:27:36,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 596 transitions, 4481 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 12:27:36,776 INFO L231 Difference]: Finished difference. Result has 431 places, 487 transitions, 3676 flow [2022-11-16 12:27:36,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3676, PETRI_PLACES=431, PETRI_TRANSITIONS=487} [2022-11-16 12:27:36,778 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 170 predicate places. [2022-11-16 12:27:36,778 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 487 transitions, 3676 flow [2022-11-16 12:27:36,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 240.35714285714286) internal successors, (3365), 14 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:36,779 INFO L209 CegarLoopForPetriNet]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:36,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:36,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:27:36,995 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:27:36,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:36,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1037707410, now seen corresponding path program 1 times [2022-11-16 12:27:36,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:36,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363046149] [2022-11-16 12:27:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:36,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:37,204 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:27:37,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312663146] [2022-11-16 12:27:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:37,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:37,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:37,207 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:37,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:27:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:43,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 5507 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:27:43,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 2610 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-16 12:27:45,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:27:45,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:45,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363046149] [2022-11-16 12:27:45,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:27:45,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312663146] [2022-11-16 12:27:45,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312663146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:45,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:45,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:27:45,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391583885] [2022-11-16 12:27:45,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:45,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:27:45,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:45,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:27:45,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:27:45,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 287 [2022-11-16 12:27:45,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 487 transitions, 3676 flow. Second operand has 11 states, 11 states have (on average 239.45454545454547) internal successors, (2634), 11 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:45,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:45,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 287 [2022-11-16 12:27:45,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:49,566 INFO L130 PetriNetUnfolder]: 8/3970 cut-off events. [2022-11-16 12:27:49,566 INFO L131 PetriNetUnfolder]: For 7140/7141 co-relation queries the response was YES. [2022-11-16 12:27:49,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7508 conditions, 3970 events. 8/3970 cut-off events. For 7140/7141 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 301 event pairs, 0 based on Foata normal form. 57/4013 useless extension candidates. Maximal degree in co-relation 7330. Up to 370 conditions per place. [2022-11-16 12:27:49,581 INFO L137 encePairwiseOnDemand]: 277/287 looper letters, 208 selfloop transitions, 139 changer transitions 0/575 dead transitions. [2022-11-16 12:27:49,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 575 transitions, 5152 flow [2022-11-16 12:27:49,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:27:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:27:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3591 transitions. [2022-11-16 12:27:49,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8341463414634146 [2022-11-16 12:27:49,586 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3591 transitions. [2022-11-16 12:27:49,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3591 transitions. [2022-11-16 12:27:49,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:49,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3591 transitions. [2022-11-16 12:27:49,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 239.4) internal successors, (3591), 15 states have internal predecessors, (3591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,599 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,599 INFO L175 Difference]: Start difference. First operand has 431 places, 487 transitions, 3676 flow. Second operand 15 states and 3591 transitions. [2022-11-16 12:27:49,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 575 transitions, 5152 flow [2022-11-16 12:27:49,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 575 transitions, 5120 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-16 12:27:49,660 INFO L231 Difference]: Finished difference. Result has 438 places, 544 transitions, 4855 flow [2022-11-16 12:27:49,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=3625, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4855, PETRI_PLACES=438, PETRI_TRANSITIONS=544} [2022-11-16 12:27:49,662 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 177 predicate places. [2022-11-16 12:27:49,662 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 544 transitions, 4855 flow [2022-11-16 12:27:49,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 239.45454545454547) internal successors, (2634), 11 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:49,664 INFO L209 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 62, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:49,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:49,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:27:49,891 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:27:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:49,892 INFO L85 PathProgramCache]: Analyzing trace with hash -973559944, now seen corresponding path program 2 times [2022-11-16 12:27:49,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:49,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657703709] [2022-11-16 12:27:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:49,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:50,314 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:27:50,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291925730] [2022-11-16 12:27:50,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:27:50,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:50,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:50,323 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:50,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:29:31,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:29:31,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:29:31,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 10566 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:29:31,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 77817 backedges. 5109 proven. 0 refuted. 0 times theorem prover too weak. 72708 trivial. 0 not checked. [2022-11-16 12:29:31,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:31,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:31,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657703709] [2022-11-16 12:29:31,939 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:29:31,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291925730] [2022-11-16 12:29:31,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291925730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:31,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:31,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:29:31,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706413078] [2022-11-16 12:29:31,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:31,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:29:31,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:31,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:29:31,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:29:31,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 287 [2022-11-16 12:29:31,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 544 transitions, 4855 flow. Second operand has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:31,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:31,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 287 [2022-11-16 12:29:31,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:29:35,546 INFO L130 PetriNetUnfolder]: 8/3942 cut-off events. [2022-11-16 12:29:35,546 INFO L131 PetriNetUnfolder]: For 8276/8277 co-relation queries the response was YES. [2022-11-16 12:29:35,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7608 conditions, 3942 events. 8/3942 cut-off events. For 8276/8277 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 273 event pairs, 0 based on Foata normal form. 28/3956 useless extension candidates. Maximal degree in co-relation 7428. Up to 423 conditions per place. [2022-11-16 12:29:35,559 INFO L137 encePairwiseOnDemand]: 278/287 looper letters, 32 selfloop transitions, 292 changer transitions 0/557 dead transitions. [2022-11-16 12:29:35,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 557 transitions, 5531 flow [2022-11-16 12:29:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:29:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:29:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2923 transitions. [2022-11-16 12:29:35,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8487224157955865 [2022-11-16 12:29:35,563 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2923 transitions. [2022-11-16 12:29:35,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2923 transitions. [2022-11-16 12:29:35,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:29:35,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2923 transitions. [2022-11-16 12:29:35,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 243.58333333333334) internal successors, (2923), 12 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:35,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 287.0) internal successors, (3731), 13 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:35,574 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 287.0) internal successors, (3731), 13 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:35,574 INFO L175 Difference]: Start difference. First operand has 438 places, 544 transitions, 4855 flow. Second operand 12 states and 2923 transitions. [2022-11-16 12:29:35,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 557 transitions, 5531 flow [2022-11-16 12:29:35,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 557 transitions, 5355 flow, removed 59 selfloop flow, removed 9 redundant places. [2022-11-16 12:29:35,632 INFO L231 Difference]: Finished difference. Result has 440 places, 544 transitions, 5361 flow [2022-11-16 12:29:35,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=4667, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5361, PETRI_PLACES=440, PETRI_TRANSITIONS=544} [2022-11-16 12:29:35,633 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 179 predicate places. [2022-11-16 12:29:35,633 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 544 transitions, 5361 flow [2022-11-16 12:29:35,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:35,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:29:35,635 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:35,855 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2022-11-16 12:29:35,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 137 [2022-11-16 12:29:35,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:29:35,908 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:29:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:35,909 INFO L85 PathProgramCache]: Analyzing trace with hash -245687629, now seen corresponding path program 1 times [2022-11-16 12:29:35,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:35,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733352794] [2022-11-16 12:29:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:35,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:36,470 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:29:36,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424113189] [2022-11-16 12:29:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:36,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:29:36,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:29:36,472 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:29:36,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:29:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:41,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 15359 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:29:41,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-16 12:29:48,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 164531 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53600 trivial. 0 not checked. [2022-11-16 12:29:56,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:56,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733352794] [2022-11-16 12:29:56,693 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:29:56,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424113189] [2022-11-16 12:29:56,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424113189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:56,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:29:56,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:29:56,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837237450] [2022-11-16 12:29:56,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:56,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:29:56,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:56,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:29:56,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:29:56,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-16 12:29:56,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 544 transitions, 5361 flow. Second operand has 16 states, 16 states have (on average 249.875) internal successors, (3998), 16 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:56,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:29:56,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-16 12:29:56,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:30:09,491 INFO L130 PetriNetUnfolder]: 12/8930 cut-off events. [2022-11-16 12:30:09,492 INFO L131 PetriNetUnfolder]: For 21757/21758 co-relation queries the response was YES. [2022-11-16 12:30:09,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17094 conditions, 8930 events. 12/8930 cut-off events. For 21757/21758 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 277 event pairs, 0 based on Foata normal form. 4/8920 useless extension candidates. Maximal degree in co-relation 16914. Up to 336 conditions per place. [2022-11-16 12:30:09,513 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 74 selfloop transitions, 21 changer transitions 0/612 dead transitions. [2022-11-16 12:30:09,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 612 transitions, 5831 flow [2022-11-16 12:30:09,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:30:09,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:30:09,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5239 transitions. [2022-11-16 12:30:09,518 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.869255019080803 [2022-11-16 12:30:09,519 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5239 transitions. [2022-11-16 12:30:09,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5239 transitions. [2022-11-16 12:30:09,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:30:09,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5239 transitions. [2022-11-16 12:30:09,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 249.47619047619048) internal successors, (5239), 21 states have internal predecessors, (5239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:09,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 287.0) internal successors, (6314), 22 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:09,533 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 287.0) internal successors, (6314), 22 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:09,533 INFO L175 Difference]: Start difference. First operand has 440 places, 544 transitions, 5361 flow. Second operand 21 states and 5239 transitions. [2022-11-16 12:30:09,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 612 transitions, 5831 flow [2022-11-16 12:30:09,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 612 transitions, 5431 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-16 12:30:09,612 INFO L231 Difference]: Finished difference. Result has 456 places, 557 transitions, 5145 flow [2022-11-16 12:30:09,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=4973, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5145, PETRI_PLACES=456, PETRI_TRANSITIONS=557} [2022-11-16 12:30:09,614 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 195 predicate places. [2022-11-16 12:30:09,614 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 557 transitions, 5145 flow [2022-11-16 12:30:09,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 249.875) internal successors, (3998), 16 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:09,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:30:09,617 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:09,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:30:09,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:30:09,831 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:30:09,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash -5566729, now seen corresponding path program 2 times [2022-11-16 12:30:09,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:09,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101840777] [2022-11-16 12:30:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:09,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:11,063 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:30:11,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307317823] [2022-11-16 12:30:11,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:30:11,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:30:11,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:30:11,065 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:30:11,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 12:30:21,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:30:21,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:30:21,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 35599 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:30:21,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 901563 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125060 trivial. 0 not checked. [2022-11-16 12:30:37,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:30:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 901563 backedges. 0 proven. 776503 refuted. 0 times theorem prover too weak. 125060 trivial. 0 not checked. [2022-11-16 12:30:55,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:55,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101840777] [2022-11-16 12:30:55,266 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:30:55,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307317823] [2022-11-16 12:30:55,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307317823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:30:55,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:30:55,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-16 12:30:55,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624449876] [2022-11-16 12:30:55,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:30:55,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:30:55,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:55,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:30:55,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:30:55,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 287 [2022-11-16 12:30:55,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 557 transitions, 5145 flow. Second operand has 21 states, 21 states have (on average 250.42857142857142) internal successors, (5259), 21 states have internal predecessors, (5259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:55,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:30:55,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 287 [2022-11-16 12:30:55,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:31:23,422 INFO L130 PetriNetUnfolder]: 15/12671 cut-off events. [2022-11-16 12:31:23,423 INFO L131 PetriNetUnfolder]: For 29184/29185 co-relation queries the response was YES. [2022-11-16 12:31:23,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23740 conditions, 12671 events. 15/12671 cut-off events. For 29184/29185 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 279 event pairs, 0 based on Foata normal form. 3/12660 useless extension candidates. Maximal degree in co-relation 23556. Up to 480 conditions per place. [2022-11-16 12:31:23,463 INFO L137 encePairwiseOnDemand]: 281/287 looper letters, 104 selfloop transitions, 30 changer transitions 0/651 dead transitions. [2022-11-16 12:31:23,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 651 transitions, 5793 flow [2022-11-16 12:31:23,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:31:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:31:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7479 transitions. [2022-11-16 12:31:23,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8686411149825783 [2022-11-16 12:31:23,472 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7479 transitions. [2022-11-16 12:31:23,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7479 transitions. [2022-11-16 12:31:23,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:31:23,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7479 transitions. [2022-11-16 12:31:23,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 249.3) internal successors, (7479), 30 states have internal predecessors, (7479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:23,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 287.0) internal successors, (8897), 31 states have internal predecessors, (8897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:23,496 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 287.0) internal successors, (8897), 31 states have internal predecessors, (8897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:23,496 INFO L175 Difference]: Start difference. First operand has 456 places, 557 transitions, 5145 flow. Second operand 30 states and 7479 transitions. [2022-11-16 12:31:23,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 651 transitions, 5793 flow [2022-11-16 12:31:23,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 651 transitions, 5763 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-11-16 12:31:23,612 INFO L231 Difference]: Finished difference. Result has 482 places, 567 transitions, 5306 flow [2022-11-16 12:31:23,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=5121, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5306, PETRI_PLACES=482, PETRI_TRANSITIONS=567} [2022-11-16 12:31:23,613 INFO L288 CegarLoopForPetriNet]: 261 programPoint places, 221 predicate places. [2022-11-16 12:31:23,614 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 567 transitions, 5306 flow [2022-11-16 12:31:23,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 250.42857142857142) internal successors, (5259), 21 states have internal predecessors, (5259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:31:23,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:31:23,618 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:31:23,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:31:23,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:31:23,843 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:31:23,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:31:23,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1600032458, now seen corresponding path program 3 times [2022-11-16 12:31:23,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:31:23,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578228071] [2022-11-16 12:31:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:23,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:31:25,569 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:31:25,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054862975] [2022-11-16 12:31:25,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:31:25,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:31:25,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:31:25,575 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:31:25,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7535bd10-73d3-4d8b-8f4f-8dda537e42ec/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process