./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:12:12,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:12:12,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:12:12,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:12:12,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:12:12,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:12:12,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:12:12,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:12:12,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:12:12,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:12:12,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:12:12,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:12:12,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:12:12,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:12:12,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:12:12,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:12:12,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:12:12,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:12:12,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:12:12,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:12:12,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:12:12,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:12:12,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:12:12,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:12:12,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:12:12,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:12:12,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:12:12,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:12:12,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:12:12,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:12:12,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:12:12,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:12:12,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:12:12,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:12:12,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:12:12,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:12:12,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:12:12,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:12:12,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:12:12,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:12:12,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:12:12,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:12:12,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:12:12,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:12:12,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:12:12,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:12:12,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:12:12,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:12:12,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:12:12,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:12:12,430 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:12:12,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:12:12,430 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:12:12,431 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:12:12,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:12:12,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:12:12,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:12:12,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:12:12,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:12:12,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:12:12,432 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:12:12,432 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:12:12,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:12:12,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:12:12,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:12:12,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:12:12,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:12:12,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:12:12,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:12,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:12:12,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:12:12,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:12:12,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:12:12,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:12:12,435 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:12:12,435 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:12:12,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:12:12,435 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_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f [2022-11-20 11:12:12,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:12:12,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:12:12,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:12:12,740 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:12:12,741 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:12:12,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-11-20 11:12:15,833 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:12:16,058 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:12:16,059 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-11-20 11:12:16,066 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/data/18a14e7db/2a991512931b40598ea380caa2b6a34c/FLAGe7be696a6 [2022-11-20 11:12:16,086 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/data/18a14e7db/2a991512931b40598ea380caa2b6a34c [2022-11-20 11:12:16,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:12:16,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:12:16,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:16,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:12:16,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:12:16,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:16" (1/1) ... [2022-11-20 11:12:16,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516ef511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16, skipping insertion in model container [2022-11-20 11:12:16,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:16" (1/1) ... [2022-11-20 11:12:16,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:12:16,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:12:16,339 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2022-11-20 11:12:16,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:16,357 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:12:16,379 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2022-11-20 11:12:16,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:12:16,396 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:12:16,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16 WrapperNode [2022-11-20 11:12:16,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:12:16,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:12:16,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:12:16,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:12:16,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16" (1/1) ... [2022-11-20 11:12:16,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16" (1/1) ... [2022-11-20 11:12:16,443 INFO L138 Inliner]: procedures = 25, calls = 37, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 230 [2022-11-20 11:12:16,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:12:16,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:12:16,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:12:16,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:12:16,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16" (1/1) ... [2022-11-20 11:12:16,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16" (1/1) ... [2022-11-20 11:12:16,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16" (1/1) ... [2022-11-20 11:12:16,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16" (1/1) ... [2022-11-20 11:12:16,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16" (1/1) ... [2022-11-20 11:12:16,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16" (1/1) ... [2022-11-20 11:12:16,473 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16" (1/1) ... [2022-11-20 11:12:16,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16" (1/1) ... [2022-11-20 11:12:16,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:12:16,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:12:16,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:12:16,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:12:16,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16" (1/1) ... [2022-11-20 11:12:16,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:12:16,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:16,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:12:16,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:12:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:12:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:12:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:12:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:12:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:12:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:12:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:12:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:12:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:12:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:12:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:12:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:12:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:12:16,571 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:12:16,748 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:12:16,750 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:12:17,283 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:12:17,296 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:12:17,296 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:12:17,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:17 BoogieIcfgContainer [2022-11-20 11:12:17,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:12:17,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:12:17,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:12:17,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:12:17,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:16" (1/3) ... [2022-11-20 11:12:17,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f1bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:17, skipping insertion in model container [2022-11-20 11:12:17,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:16" (2/3) ... [2022-11-20 11:12:17,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f1bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:17, skipping insertion in model container [2022-11-20 11:12:17,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:17" (3/3) ... [2022-11-20 11:12:17,308 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2022-11-20 11:12:17,317 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:12:17,328 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:12:17,328 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-20 11:12:17,328 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:12:17,454 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:12:17,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 321 transitions, 658 flow [2022-11-20 11:12:17,668 INFO L130 PetriNetUnfolder]: 25/319 cut-off events. [2022-11-20 11:12:17,668 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:12:17,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 319 events. 25/319 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 538 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 200. Up to 2 conditions per place. [2022-11-20 11:12:17,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 321 transitions, 658 flow [2022-11-20 11:12:17,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 284 transitions, 577 flow [2022-11-20 11:12:17,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:12:17,725 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;@5d59c996, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:12:17,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-20 11:12:17,737 INFO L130 PetriNetUnfolder]: 3/56 cut-off events. [2022-11-20 11:12:17,737 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:12:17,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:17,738 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:17,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:12:17,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:17,744 INFO L85 PathProgramCache]: Analyzing trace with hash -309025070, now seen corresponding path program 1 times [2022-11-20 11:12:17,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:17,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969316408] [2022-11-20 11:12:17,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:17,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:18,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:18,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969316408] [2022-11-20 11:12:18,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969316408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:18,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:18,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:12:18,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416926048] [2022-11-20 11:12:18,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:18,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:12:18,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:18,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:12:18,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:12:18,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-20 11:12:18,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 284 transitions, 577 flow. Second operand has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:18,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:18,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-20 11:12:18,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:18,515 INFO L130 PetriNetUnfolder]: 15/474 cut-off events. [2022-11-20 11:12:18,515 INFO L131 PetriNetUnfolder]: For 10/12 co-relation queries the response was YES. [2022-11-20 11:12:18,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 474 events. 15/474 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1443 event pairs, 0 based on Foata normal form. 26/432 useless extension candidates. Maximal degree in co-relation 357. Up to 29 conditions per place. [2022-11-20 11:12:18,523 INFO L137 encePairwiseOnDemand]: 294/321 looper letters, 38 selfloop transitions, 9 changer transitions 4/290 dead transitions. [2022-11-20 11:12:18,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 290 transitions, 692 flow [2022-11-20 11:12:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:12:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:12:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1450 transitions. [2022-11-20 11:12:18,542 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9034267912772586 [2022-11-20 11:12:18,543 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1450 transitions. [2022-11-20 11:12:18,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1450 transitions. [2022-11-20 11:12:18,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:18,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1450 transitions. [2022-11-20 11:12:18,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:18,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:18,571 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:18,573 INFO L175 Difference]: Start difference. First operand has 269 places, 284 transitions, 577 flow. Second operand 5 states and 1450 transitions. [2022-11-20 11:12:18,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 290 transitions, 692 flow [2022-11-20 11:12:18,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 290 transitions, 682 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:12:18,588 INFO L231 Difference]: Finished difference. Result has 273 places, 273 transitions, 603 flow [2022-11-20 11:12:18,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=603, PETRI_PLACES=273, PETRI_TRANSITIONS=273} [2022-11-20 11:12:18,596 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 4 predicate places. [2022-11-20 11:12:18,596 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 273 transitions, 603 flow [2022-11-20 11:12:18,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:18,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:18,598 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:18,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:12:18,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:12:18,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:18,600 INFO L85 PathProgramCache]: Analyzing trace with hash 630141069, now seen corresponding path program 1 times [2022-11-20 11:12:18,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:18,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447230349] [2022-11-20 11:12:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:18,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:18,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:18,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447230349] [2022-11-20 11:12:18,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447230349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:18,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399071918] [2022-11-20 11:12:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:18,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:18,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:18,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:18,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:12:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:18,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:12:18,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:19,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:19,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:19,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399071918] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:19,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:19,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:12:19,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678663144] [2022-11-20 11:12:19,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:19,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:12:19,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:19,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:12:19,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:12:19,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-20 11:12:19,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 273 transitions, 603 flow. Second operand has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:19,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:19,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-20 11:12:19,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:19,742 INFO L130 PetriNetUnfolder]: 36/1086 cut-off events. [2022-11-20 11:12:19,742 INFO L131 PetriNetUnfolder]: For 32/37 co-relation queries the response was YES. [2022-11-20 11:12:19,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 1086 events. 36/1086 cut-off events. For 32/37 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5642 event pairs, 0 based on Foata normal form. 6/942 useless extension candidates. Maximal degree in co-relation 820. Up to 22 conditions per place. [2022-11-20 11:12:19,755 INFO L137 encePairwiseOnDemand]: 306/321 looper letters, 71 selfloop transitions, 40 changer transitions 0/350 dead transitions. [2022-11-20 11:12:19,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 350 transitions, 1045 flow [2022-11-20 11:12:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:12:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:12:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5067 transitions. [2022-11-20 11:12:19,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769470404984424 [2022-11-20 11:12:19,766 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5067 transitions. [2022-11-20 11:12:19,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5067 transitions. [2022-11-20 11:12:19,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:19,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5067 transitions. [2022-11-20 11:12:19,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 281.5) internal successors, (5067), 18 states have internal predecessors, (5067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:19,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:19,840 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:19,840 INFO L175 Difference]: Start difference. First operand has 273 places, 273 transitions, 603 flow. Second operand 18 states and 5067 transitions. [2022-11-20 11:12:19,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 350 transitions, 1045 flow [2022-11-20 11:12:19,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 350 transitions, 1040 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:12:19,854 INFO L231 Difference]: Finished difference. Result has 289 places, 300 transitions, 836 flow [2022-11-20 11:12:19,855 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=836, PETRI_PLACES=289, PETRI_TRANSITIONS=300} [2022-11-20 11:12:19,856 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 20 predicate places. [2022-11-20 11:12:19,856 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 300 transitions, 836 flow [2022-11-20 11:12:19,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:19,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:19,861 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:19,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:12:20,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:20,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:12:20,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:20,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1940462778, now seen corresponding path program 1 times [2022-11-20 11:12:20,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:20,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993336767] [2022-11-20 11:12:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:20,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:20,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:20,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993336767] [2022-11-20 11:12:20,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993336767] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:20,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849443649] [2022-11-20 11:12:20,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:20,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:20,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:20,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:20,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:12:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:20,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:12:20,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:20,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:20,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:12:20,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849443649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:20,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:12:20,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:12:20,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883468042] [2022-11-20 11:12:20,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:20,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:12:20,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:20,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:12:20,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:12:20,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-20 11:12:20,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 300 transitions, 836 flow. Second operand has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:20,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:20,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-20 11:12:20,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:20,886 INFO L130 PetriNetUnfolder]: 36/1078 cut-off events. [2022-11-20 11:12:20,887 INFO L131 PetriNetUnfolder]: For 126/131 co-relation queries the response was YES. [2022-11-20 11:12:20,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 1078 events. 36/1078 cut-off events. For 126/131 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5615 event pairs, 0 based on Foata normal form. 8/936 useless extension candidates. Maximal degree in co-relation 1013. Up to 44 conditions per place. [2022-11-20 11:12:20,897 INFO L137 encePairwiseOnDemand]: 310/321 looper letters, 39 selfloop transitions, 27 changer transitions 0/305 dead transitions. [2022-11-20 11:12:20,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 305 transitions, 948 flow [2022-11-20 11:12:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:12:20,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:12:20,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1972 transitions. [2022-11-20 11:12:20,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8776145972407655 [2022-11-20 11:12:20,904 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1972 transitions. [2022-11-20 11:12:20,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1972 transitions. [2022-11-20 11:12:20,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:20,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1972 transitions. [2022-11-20 11:12:20,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.7142857142857) internal successors, (1972), 7 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:20,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:20,915 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:20,915 INFO L175 Difference]: Start difference. First operand has 289 places, 300 transitions, 836 flow. Second operand 7 states and 1972 transitions. [2022-11-20 11:12:20,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 305 transitions, 948 flow [2022-11-20 11:12:20,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 305 transitions, 874 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-20 11:12:20,927 INFO L231 Difference]: Finished difference. Result has 284 places, 292 transitions, 762 flow [2022-11-20 11:12:20,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=762, PETRI_PLACES=284, PETRI_TRANSITIONS=292} [2022-11-20 11:12:20,933 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 15 predicate places. [2022-11-20 11:12:20,934 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 292 transitions, 762 flow [2022-11-20 11:12:20,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.3333333333333) internal successors, (1664), 6 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:20,935 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:20,935 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:20,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:21,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:21,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:12:21,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:21,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1096002670, now seen corresponding path program 2 times [2022-11-20 11:12:21,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:21,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736441539] [2022-11-20 11:12:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:21,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:21,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:21,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736441539] [2022-11-20 11:12:21,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736441539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:21,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526533089] [2022-11-20 11:12:21,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:12:21,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:21,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:21,469 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:21,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:12:21,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:12:21,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:21,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:12:21,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:12:21,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:12:21,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526533089] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:21,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:21,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-20 11:12:21,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396340551] [2022-11-20 11:12:21,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:21,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:12:21,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:21,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:12:21,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:12:21,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 321 [2022-11-20 11:12:21,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 292 transitions, 762 flow. Second operand has 18 states, 18 states have (on average 269.0) internal successors, (4842), 18 states have internal predecessors, (4842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:21,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:21,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 321 [2022-11-20 11:12:21,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:22,675 INFO L130 PetriNetUnfolder]: 43/1266 cut-off events. [2022-11-20 11:12:22,676 INFO L131 PetriNetUnfolder]: For 114/120 co-relation queries the response was YES. [2022-11-20 11:12:22,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 1266 events. 43/1266 cut-off events. For 114/120 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7003 event pairs, 0 based on Foata normal form. 2/1088 useless extension candidates. Maximal degree in co-relation 1020. Up to 14 conditions per place. [2022-11-20 11:12:22,687 INFO L137 encePairwiseOnDemand]: 305/321 looper letters, 83 selfloop transitions, 43 changer transitions 0/355 dead transitions. [2022-11-20 11:12:22,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 355 transitions, 1170 flow [2022-11-20 11:12:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:12:22,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 11:12:22,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5428 transitions. [2022-11-20 11:12:22,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8454828660436137 [2022-11-20 11:12:22,699 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5428 transitions. [2022-11-20 11:12:22,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5428 transitions. [2022-11-20 11:12:22,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:22,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5428 transitions. [2022-11-20 11:12:22,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 271.4) internal successors, (5428), 20 states have internal predecessors, (5428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:22,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 321.0) internal successors, (6741), 21 states have internal predecessors, (6741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:22,727 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 321.0) internal successors, (6741), 21 states have internal predecessors, (6741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:22,727 INFO L175 Difference]: Start difference. First operand has 284 places, 292 transitions, 762 flow. Second operand 20 states and 5428 transitions. [2022-11-20 11:12:22,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 355 transitions, 1170 flow [2022-11-20 11:12:22,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 355 transitions, 1117 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 11:12:22,735 INFO L231 Difference]: Finished difference. Result has 293 places, 295 transitions, 808 flow [2022-11-20 11:12:22,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=808, PETRI_PLACES=293, PETRI_TRANSITIONS=295} [2022-11-20 11:12:22,736 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 24 predicate places. [2022-11-20 11:12:22,737 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 295 transitions, 808 flow [2022-11-20 11:12:22,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 269.0) internal successors, (4842), 18 states have internal predecessors, (4842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:22,739 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:22,739 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:22,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:22,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:22,945 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:12:22,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:22,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1201390210, now seen corresponding path program 1 times [2022-11-20 11:12:22,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:22,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758447771] [2022-11-20 11:12:22,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:22,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:23,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:23,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758447771] [2022-11-20 11:12:23,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758447771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:23,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:23,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:12:23,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354350231] [2022-11-20 11:12:23,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:23,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:12:23,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:23,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:12:23,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:12:23,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-20 11:12:23,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 295 transitions, 808 flow. Second operand has 5 states, 5 states have (on average 278.4) internal successors, (1392), 5 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:23,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:23,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-20 11:12:23,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:23,350 INFO L130 PetriNetUnfolder]: 36/1080 cut-off events. [2022-11-20 11:12:23,351 INFO L131 PetriNetUnfolder]: For 148/153 co-relation queries the response was YES. [2022-11-20 11:12:23,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1305 conditions, 1080 events. 36/1080 cut-off events. For 148/153 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5430 event pairs, 0 based on Foata normal form. 2/942 useless extension candidates. Maximal degree in co-relation 203. Up to 74 conditions per place. [2022-11-20 11:12:23,361 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 41 selfloop transitions, 12 changer transitions 0/298 dead transitions. [2022-11-20 11:12:23,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 298 transitions, 919 flow [2022-11-20 11:12:23,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:12:23,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:12:23,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1412 transitions. [2022-11-20 11:12:23,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8797507788161993 [2022-11-20 11:12:23,365 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1412 transitions. [2022-11-20 11:12:23,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1412 transitions. [2022-11-20 11:12:23,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:23,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1412 transitions. [2022-11-20 11:12:23,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 282.4) internal successors, (1412), 5 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:23,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:23,373 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:23,373 INFO L175 Difference]: Start difference. First operand has 293 places, 295 transitions, 808 flow. Second operand 5 states and 1412 transitions. [2022-11-20 11:12:23,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 298 transitions, 919 flow [2022-11-20 11:12:23,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 298 transitions, 828 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-11-20 11:12:23,380 INFO L231 Difference]: Finished difference. Result has 283 places, 294 transitions, 742 flow [2022-11-20 11:12:23,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=742, PETRI_PLACES=283, PETRI_TRANSITIONS=294} [2022-11-20 11:12:23,382 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 14 predicate places. [2022-11-20 11:12:23,382 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 294 transitions, 742 flow [2022-11-20 11:12:23,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.4) internal successors, (1392), 5 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:23,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:23,383 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:23,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:12:23,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:12:23,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:23,384 INFO L85 PathProgramCache]: Analyzing trace with hash 262610193, now seen corresponding path program 1 times [2022-11-20 11:12:23,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:23,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113129608] [2022-11-20 11:12:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:23,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:12:23,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:23,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113129608] [2022-11-20 11:12:23,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113129608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:23,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95003636] [2022-11-20 11:12:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:23,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:23,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:23,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:23,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:12:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:23,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:12:23,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:12:23,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:12:23,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95003636] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:23,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:23,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 11:12:23,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249541010] [2022-11-20 11:12:23,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:23,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:12:23,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:23,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:12:23,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:12:23,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 321 [2022-11-20 11:12:23,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 294 transitions, 742 flow. Second operand has 15 states, 15 states have (on average 268.6666666666667) internal successors, (4030), 15 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:23,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:23,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 321 [2022-11-20 11:12:23,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:24,272 INFO L130 PetriNetUnfolder]: 22/708 cut-off events. [2022-11-20 11:12:24,272 INFO L131 PetriNetUnfolder]: For 44/47 co-relation queries the response was YES. [2022-11-20 11:12:24,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 708 events. 22/708 cut-off events. For 44/47 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2634 event pairs, 0 based on Foata normal form. 4/628 useless extension candidates. Maximal degree in co-relation 648. Up to 38 conditions per place. [2022-11-20 11:12:24,280 INFO L137 encePairwiseOnDemand]: 305/321 looper letters, 51 selfloop transitions, 30 changer transitions 0/310 dead transitions. [2022-11-20 11:12:24,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 310 transitions, 946 flow [2022-11-20 11:12:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:12:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:12:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2982 transitions. [2022-11-20 11:12:24,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8445199660152931 [2022-11-20 11:12:24,287 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2982 transitions. [2022-11-20 11:12:24,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2982 transitions. [2022-11-20 11:12:24,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:24,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2982 transitions. [2022-11-20 11:12:24,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 271.09090909090907) internal successors, (2982), 11 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:24,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:24,303 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:24,303 INFO L175 Difference]: Start difference. First operand has 283 places, 294 transitions, 742 flow. Second operand 11 states and 2982 transitions. [2022-11-20 11:12:24,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 310 transitions, 946 flow [2022-11-20 11:12:24,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 310 transitions, 926 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:12:24,310 INFO L231 Difference]: Finished difference. Result has 292 places, 294 transitions, 821 flow [2022-11-20 11:12:24,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=821, PETRI_PLACES=292, PETRI_TRANSITIONS=294} [2022-11-20 11:12:24,312 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 23 predicate places. [2022-11-20 11:12:24,312 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 294 transitions, 821 flow [2022-11-20 11:12:24,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 268.6666666666667) internal successors, (4030), 15 states have internal predecessors, (4030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:24,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:24,314 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:24,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:24,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:24,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:12:24,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:24,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1124451215, now seen corresponding path program 2 times [2022-11-20 11:12:24,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:24,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192147868] [2022-11-20 11:12:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:24,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 11:12:24,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:24,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192147868] [2022-11-20 11:12:24,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192147868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:24,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853735116] [2022-11-20 11:12:24,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:12:24,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:24,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:24,805 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:24,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:12:24,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:12:24,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:24,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:12:24,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 11:12:25,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 11:12:25,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853735116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:25,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:25,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-20 11:12:25,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635989845] [2022-11-20 11:12:25,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:25,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:12:25,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:25,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:12:25,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:12:25,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 321 [2022-11-20 11:12:25,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 294 transitions, 821 flow. Second operand has 22 states, 22 states have (on average 268.77272727272725) internal successors, (5913), 22 states have internal predecessors, (5913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:25,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:12:25,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 321 [2022-11-20 11:12:25,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:12:25,860 INFO L130 PetriNetUnfolder]: 8/336 cut-off events. [2022-11-20 11:12:25,860 INFO L131 PetriNetUnfolder]: For 102/103 co-relation queries the response was YES. [2022-11-20 11:12:25,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 336 events. 8/336 cut-off events. For 102/103 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 336 event pairs, 0 based on Foata normal form. 4/312 useless extension candidates. Maximal degree in co-relation 192. Up to 18 conditions per place. [2022-11-20 11:12:25,863 INFO L137 encePairwiseOnDemand]: 305/321 looper letters, 57 selfloop transitions, 34 changer transitions 0/320 dead transitions. [2022-11-20 11:12:25,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 320 transitions, 1085 flow [2022-11-20 11:12:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:12:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 11:12:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4600 transitions. [2022-11-20 11:12:25,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8429540040315191 [2022-11-20 11:12:25,874 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4600 transitions. [2022-11-20 11:12:25,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4600 transitions. [2022-11-20 11:12:25,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:12:25,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4600 transitions. [2022-11-20 11:12:25,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 270.5882352941176) internal successors, (4600), 17 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:25,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 321.0) internal successors, (5778), 18 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:25,897 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 321.0) internal successors, (5778), 18 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:25,897 INFO L175 Difference]: Start difference. First operand has 292 places, 294 transitions, 821 flow. Second operand 17 states and 4600 transitions. [2022-11-20 11:12:25,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 320 transitions, 1085 flow [2022-11-20 11:12:25,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 320 transitions, 1030 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-20 11:12:25,905 INFO L231 Difference]: Finished difference. Result has 301 places, 292 transitions, 848 flow [2022-11-20 11:12:25,906 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=848, PETRI_PLACES=301, PETRI_TRANSITIONS=292} [2022-11-20 11:12:25,907 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 32 predicate places. [2022-11-20 11:12:25,907 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 292 transitions, 848 flow [2022-11-20 11:12:25,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 268.77272727272725) internal successors, (5913), 22 states have internal predecessors, (5913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:25,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:12:25,910 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:25,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:26,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:12:26,127 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:12:26,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:26,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1360620591, now seen corresponding path program 3 times [2022-11-20 11:12:26,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:26,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206918324] [2022-11-20 11:12:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:26,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 27 proven. 68 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 11:12:28,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:28,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206918324] [2022-11-20 11:12:28,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206918324] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:28,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519479924] [2022-11-20 11:12:28,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:12:28,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:28,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:28,847 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:28,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:12:29,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-20 11:12:29,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:29,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-20 11:12:29,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:29,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:12:29,701 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 11:12:29,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 28 [2022-11-20 11:12:30,049 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 11:12:30,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-20 11:12:30,355 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 11:12:30,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-20 11:12:30,608 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 11:12:30,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-20 11:12:31,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:12:31,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:12:31,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:12:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 11:12:31,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:31,387 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_233 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_233) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-20 11:12:31,483 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_233 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_233) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 9223372039002259456)) is different from false [2022-11-20 11:12:31,490 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_233 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_233) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456)) is different from false [2022-11-20 11:13:14,741 INFO L321 Elim1Store]: treesize reduction 280, result has 34.1 percent of original size [2022-11-20 11:13:14,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 155 [2022-11-20 11:13:14,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:13:14,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 154 treesize of output 230 [2022-11-20 11:13:15,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:13:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 11:13:17,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519479924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:13:17,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:13:17,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27, 30] total 73 [2022-11-20 11:13:17,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94192247] [2022-11-20 11:13:17,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:13:17,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-11-20 11:13:17,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:17,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-11-20 11:13:17,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=4507, Unknown=26, NotChecked=420, Total=5402 [2022-11-20 11:13:17,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 321 [2022-11-20 11:13:17,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 292 transitions, 848 flow. Second operand has 74 states, 74 states have (on average 209.47297297297297) internal successors, (15501), 74 states have internal predecessors, (15501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:17,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:17,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 321 [2022-11-20 11:13:17,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:13:22,843 INFO L130 PetriNetUnfolder]: 996/4440 cut-off events. [2022-11-20 11:13:22,843 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-11-20 11:13:22,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6507 conditions, 4440 events. 996/4440 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 39032 event pairs, 168 based on Foata normal form. 0/3669 useless extension candidates. Maximal degree in co-relation 6081. Up to 451 conditions per place. [2022-11-20 11:13:22,932 INFO L137 encePairwiseOnDemand]: 287/321 looper letters, 261 selfloop transitions, 62 changer transitions 0/495 dead transitions. [2022-11-20 11:13:22,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 495 transitions, 1925 flow [2022-11-20 11:13:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:13:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:13:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8544 transitions. [2022-11-20 11:13:22,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6654205607476635 [2022-11-20 11:13:22,951 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8544 transitions. [2022-11-20 11:13:22,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8544 transitions. [2022-11-20 11:13:22,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:22,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8544 transitions. [2022-11-20 11:13:22,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 213.6) internal successors, (8544), 40 states have internal predecessors, (8544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:22,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 321.0) internal successors, (13161), 41 states have internal predecessors, (13161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:22,998 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 321.0) internal successors, (13161), 41 states have internal predecessors, (13161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:22,998 INFO L175 Difference]: Start difference. First operand has 301 places, 292 transitions, 848 flow. Second operand 40 states and 8544 transitions. [2022-11-20 11:13:22,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 495 transitions, 1925 flow [2022-11-20 11:13:23,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 495 transitions, 1857 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-20 11:13:23,012 INFO L231 Difference]: Finished difference. Result has 343 places, 327 transitions, 1099 flow [2022-11-20 11:13:23,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1099, PETRI_PLACES=343, PETRI_TRANSITIONS=327} [2022-11-20 11:13:23,017 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 74 predicate places. [2022-11-20 11:13:23,018 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 327 transitions, 1099 flow [2022-11-20 11:13:23,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 209.47297297297297) internal successors, (15501), 74 states have internal predecessors, (15501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:23,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:13:23,023 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:23,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:23,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 11:13:23,230 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:13:23,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash 770435450, now seen corresponding path program 1 times [2022-11-20 11:13:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:23,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716696618] [2022-11-20 11:13:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:23,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 11:13:23,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:23,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716696618] [2022-11-20 11:13:23,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716696618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:23,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:23,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:13:23,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498206255] [2022-11-20 11:13:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:23,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:13:23,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:23,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:13:23,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:13:23,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 321 [2022-11-20 11:13:23,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 327 transitions, 1099 flow. Second operand has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:23,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:13:23,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 321 [2022-11-20 11:13:23,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:13:23,823 INFO L130 PetriNetUnfolder]: 118/1566 cut-off events. [2022-11-20 11:13:23,824 INFO L131 PetriNetUnfolder]: For 333/334 co-relation queries the response was YES. [2022-11-20 11:13:23,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2400 conditions, 1566 events. 118/1566 cut-off events. For 333/334 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 9521 event pairs, 30 based on Foata normal form. 12/1362 useless extension candidates. Maximal degree in co-relation 2089. Up to 141 conditions per place. [2022-11-20 11:13:23,838 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 42 selfloop transitions, 8 changer transitions 0/336 dead transitions. [2022-11-20 11:13:23,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 336 transitions, 1210 flow [2022-11-20 11:13:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:13:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:13:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1144 transitions. [2022-11-20 11:13:23,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8909657320872274 [2022-11-20 11:13:23,841 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1144 transitions. [2022-11-20 11:13:23,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1144 transitions. [2022-11-20 11:13:23,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:13:23,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1144 transitions. [2022-11-20 11:13:23,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:23,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:23,846 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:23,847 INFO L175 Difference]: Start difference. First operand has 343 places, 327 transitions, 1099 flow. Second operand 4 states and 1144 transitions. [2022-11-20 11:13:23,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 336 transitions, 1210 flow [2022-11-20 11:13:23,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 336 transitions, 1181 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-20 11:13:23,857 INFO L231 Difference]: Finished difference. Result has 336 places, 326 transitions, 1100 flow [2022-11-20 11:13:23,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1100, PETRI_PLACES=336, PETRI_TRANSITIONS=326} [2022-11-20 11:13:23,859 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 67 predicate places. [2022-11-20 11:13:23,859 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 326 transitions, 1100 flow [2022-11-20 11:13:23,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:23,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:13:23,860 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:23,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:13:23,860 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:13:23,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:23,861 INFO L85 PathProgramCache]: Analyzing trace with hash -632003458, now seen corresponding path program 1 times [2022-11-20 11:13:23,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:23,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310764368] [2022-11-20 11:13:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:23,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 11 proven. 79 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-20 11:13:26,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:26,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310764368] [2022-11-20 11:13:26,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310764368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:13:26,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249435616] [2022-11-20 11:13:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:26,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:13:26,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:13:26,431 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:13:26,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:13:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:26,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-20 11:13:26,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:27,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 11:13:27,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:27,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:13:27,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:27,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:13:28,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:28,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:13:28,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:28,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:13:28,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:28,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:13:28,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:28,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:13:28,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:13:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 48 proven. 47 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 11:13:28,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:13:29,249 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_339 (Array Int Int)) (v_ArrVal_338 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_338) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_339) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-20 11:14:50,382 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-20 11:14:50,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 74 [2022-11-20 11:14:50,397 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:14:50,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 120 [2022-11-20 11:14:50,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2022-11-20 11:14:50,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2022-11-20 11:15:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 39 proven. 53 refuted. 3 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 11:15:09,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249435616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:15:09,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:15:09,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 29] total 72 [2022-11-20 11:15:09,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775199648] [2022-11-20 11:15:09,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:15:09,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-11-20 11:15:09,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:09,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-11-20 11:15:09,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=4533, Unknown=102, NotChecked=140, Total=5256 [2022-11-20 11:15:09,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 321 [2022-11-20 11:15:09,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 326 transitions, 1100 flow. Second operand has 73 states, 73 states have (on average 215.21917808219177) internal successors, (15711), 73 states have internal predecessors, (15711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:09,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:15:09,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 321 [2022-11-20 11:15:09,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:15:16,077 INFO L130 PetriNetUnfolder]: 1597/5636 cut-off events. [2022-11-20 11:15:16,077 INFO L131 PetriNetUnfolder]: For 2203/2206 co-relation queries the response was YES. [2022-11-20 11:15:16,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10362 conditions, 5636 events. 1597/5636 cut-off events. For 2203/2206 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 48097 event pairs, 160 based on Foata normal form. 7/4914 useless extension candidates. Maximal degree in co-relation 9953. Up to 842 conditions per place. [2022-11-20 11:15:16,139 INFO L137 encePairwiseOnDemand]: 283/321 looper letters, 204 selfloop transitions, 72 changer transitions 0/457 dead transitions. [2022-11-20 11:15:16,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 457 transitions, 2079 flow [2022-11-20 11:15:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:15:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:15:16,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8722 transitions. [2022-11-20 11:15:16,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6792834890965732 [2022-11-20 11:15:16,153 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8722 transitions. [2022-11-20 11:15:16,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8722 transitions. [2022-11-20 11:15:16,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:15:16,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8722 transitions. [2022-11-20 11:15:16,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 218.05) internal successors, (8722), 40 states have internal predecessors, (8722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:16,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 321.0) internal successors, (13161), 41 states have internal predecessors, (13161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:16,202 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 321.0) internal successors, (13161), 41 states have internal predecessors, (13161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:16,202 INFO L175 Difference]: Start difference. First operand has 336 places, 326 transitions, 1100 flow. Second operand 40 states and 8722 transitions. [2022-11-20 11:15:16,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 457 transitions, 2079 flow [2022-11-20 11:15:16,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 457 transitions, 2079 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:15:16,226 INFO L231 Difference]: Finished difference. Result has 384 places, 341 transitions, 1413 flow [2022-11-20 11:15:16,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1413, PETRI_PLACES=384, PETRI_TRANSITIONS=341} [2022-11-20 11:15:16,228 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 115 predicate places. [2022-11-20 11:15:16,228 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 341 transitions, 1413 flow [2022-11-20 11:15:16,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 215.21917808219177) internal successors, (15711), 73 states have internal predecessors, (15711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:15:16,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:15:16,236 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:15:16,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 11:15:16,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:15:16,443 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:15:16,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:15:16,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1264152792, now seen corresponding path program 1 times [2022-11-20 11:15:16,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:15:16,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144166385] [2022-11-20 11:15:16,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:16,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:15:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 11 proven. 108 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-20 11:15:20,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:15:20,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144166385] [2022-11-20 11:15:20,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144166385] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:15:20,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562911910] [2022-11-20 11:15:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:15:20,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:15:20,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:15:20,535 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:15:20,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:15:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:20,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-20 11:15:20,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:15:20,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:15:20,840 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:15:20,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 11:15:21,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 11:15:21,501 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:15:21,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:15:21,800 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:15:21,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:15:22,095 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:15:22,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:15:22,415 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:15:22,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 11:15:23,124 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 11:15:23,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:15:23,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:15:23,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:15:23,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:15:23,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:15:24,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:15:24,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:15:24,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:15:24,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:15:24,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:15:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 48 proven. 76 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 11:15:24,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:16:53,438 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-20 11:16:53,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 77 [2022-11-20 11:16:53,461 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:16:53,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1954 treesize of output 1892 [2022-11-20 11:16:53,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1878 treesize of output 1750 [2022-11-20 11:16:53,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1750 treesize of output 1718 [2022-11-20 11:16:53,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1718 treesize of output 1654 [2022-11-20 11:18:01,235 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:18:01,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2022-11-20 11:18:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 39 proven. 82 refuted. 3 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 11:18:01,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562911910] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:18:01,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:18:01,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 32] total 83 [2022-11-20 11:18:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223145147] [2022-11-20 11:18:01,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:18:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-11-20 11:18:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-11-20 11:18:01,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=6372, Unknown=103, NotChecked=0, Total=6972 [2022-11-20 11:18:01,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 321 [2022-11-20 11:18:01,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 341 transitions, 1413 flow. Second operand has 84 states, 84 states have (on average 212.38095238095238) internal successors, (17840), 84 states have internal predecessors, (17840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:01,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:01,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 321 [2022-11-20 11:18:01,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:14,019 INFO L130 PetriNetUnfolder]: 6683/22420 cut-off events. [2022-11-20 11:18:14,019 INFO L131 PetriNetUnfolder]: For 8198/8253 co-relation queries the response was YES. [2022-11-20 11:18:14,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39077 conditions, 22420 events. 6683/22420 cut-off events. For 8198/8253 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 264139 event pairs, 1442 based on Foata normal form. 2/18025 useless extension candidates. Maximal degree in co-relation 38740. Up to 2827 conditions per place. [2022-11-20 11:18:14,245 INFO L137 encePairwiseOnDemand]: 289/321 looper letters, 204 selfloop transitions, 54 changer transitions 0/466 dead transitions. [2022-11-20 11:18:14,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 466 transitions, 2294 flow [2022-11-20 11:18:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 11:18:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 11:18:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 9414 transitions. [2022-11-20 11:18:14,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6665250637213254 [2022-11-20 11:18:14,264 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 9414 transitions. [2022-11-20 11:18:14,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 9414 transitions. [2022-11-20 11:18:14,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:14,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 9414 transitions. [2022-11-20 11:18:14,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 213.95454545454547) internal successors, (9414), 44 states have internal predecessors, (9414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 321.0) internal successors, (14445), 45 states have internal predecessors, (14445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,314 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 321.0) internal successors, (14445), 45 states have internal predecessors, (14445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,314 INFO L175 Difference]: Start difference. First operand has 384 places, 341 transitions, 1413 flow. Second operand 44 states and 9414 transitions. [2022-11-20 11:18:14,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 466 transitions, 2294 flow [2022-11-20 11:18:14,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 466 transitions, 2197 flow, removed 22 selfloop flow, removed 18 redundant places. [2022-11-20 11:18:14,344 INFO L231 Difference]: Finished difference. Result has 419 places, 357 transitions, 1535 flow [2022-11-20 11:18:14,344 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1535, PETRI_PLACES=419, PETRI_TRANSITIONS=357} [2022-11-20 11:18:14,346 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 150 predicate places. [2022-11-20 11:18:14,346 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 357 transitions, 1535 flow [2022-11-20 11:18:14,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 212.38095238095238) internal successors, (17840), 84 states have internal predecessors, (17840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,349 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:14,351 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:14,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:18:14,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:14,557 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:18:14,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:14,558 INFO L85 PathProgramCache]: Analyzing trace with hash 534031778, now seen corresponding path program 1 times [2022-11-20 11:18:14,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:14,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126449143] [2022-11-20 11:18:14,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:14,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 11:18:14,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:14,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126449143] [2022-11-20 11:18:14,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126449143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:14,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:14,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:18:14,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687541740] [2022-11-20 11:18:14,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:14,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:18:14,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:14,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:18:14,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:14,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 321 [2022-11-20 11:18:14,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 357 transitions, 1535 flow. Second operand has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:14,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:14,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 321 [2022-11-20 11:18:14,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:16,817 INFO L130 PetriNetUnfolder]: 672/4503 cut-off events. [2022-11-20 11:18:16,818 INFO L131 PetriNetUnfolder]: For 1564/1573 co-relation queries the response was YES. [2022-11-20 11:18:16,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7029 conditions, 4503 events. 672/4503 cut-off events. For 1564/1573 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 49750 event pairs, 270 based on Foata normal form. 44/3515 useless extension candidates. Maximal degree in co-relation 6810. Up to 657 conditions per place. [2022-11-20 11:18:16,883 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 36 selfloop transitions, 6 changer transitions 0/366 dead transitions. [2022-11-20 11:18:16,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 366 transitions, 1633 flow [2022-11-20 11:18:16,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:18:16,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:18:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1143 transitions. [2022-11-20 11:18:16,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8901869158878505 [2022-11-20 11:18:16,887 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1143 transitions. [2022-11-20 11:18:16,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1143 transitions. [2022-11-20 11:18:16,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:16,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1143 transitions. [2022-11-20 11:18:16,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:16,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:16,892 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:16,893 INFO L175 Difference]: Start difference. First operand has 419 places, 357 transitions, 1535 flow. Second operand 4 states and 1143 transitions. [2022-11-20 11:18:16,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 366 transitions, 1633 flow [2022-11-20 11:18:16,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 366 transitions, 1524 flow, removed 6 selfloop flow, removed 30 redundant places. [2022-11-20 11:18:16,910 INFO L231 Difference]: Finished difference. Result has 394 places, 357 transitions, 1452 flow [2022-11-20 11:18:16,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1452, PETRI_PLACES=394, PETRI_TRANSITIONS=357} [2022-11-20 11:18:16,912 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 125 predicate places. [2022-11-20 11:18:16,912 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 357 transitions, 1452 flow [2022-11-20 11:18:16,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:16,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:16,913 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:16,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:18:16,914 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:18:16,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:16,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1345034655, now seen corresponding path program 1 times [2022-11-20 11:18:16,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:16,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160728812] [2022-11-20 11:18:16,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:16,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 11:18:17,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:17,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160728812] [2022-11-20 11:18:17,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160728812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:18:17,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:18:17,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:18:17,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174694887] [2022-11-20 11:18:17,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:18:17,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:18:17,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:18:17,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:18:17,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:18:17,026 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 321 [2022-11-20 11:18:17,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 357 transitions, 1452 flow. Second operand has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:17,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:18:17,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 321 [2022-11-20 11:18:17,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:18:18,450 INFO L130 PetriNetUnfolder]: 169/3187 cut-off events. [2022-11-20 11:18:18,450 INFO L131 PetriNetUnfolder]: For 1118/1119 co-relation queries the response was YES. [2022-11-20 11:18:18,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4968 conditions, 3187 events. 169/3187 cut-off events. For 1118/1119 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 24523 event pairs, 36 based on Foata normal form. 8/2770 useless extension candidates. Maximal degree in co-relation 4778. Up to 182 conditions per place. [2022-11-20 11:18:18,511 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 48 selfloop transitions, 7 changer transitions 0/367 dead transitions. [2022-11-20 11:18:18,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 367 transitions, 1591 flow [2022-11-20 11:18:18,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:18:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:18:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1142 transitions. [2022-11-20 11:18:18,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8894080996884736 [2022-11-20 11:18:18,515 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1142 transitions. [2022-11-20 11:18:18,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1142 transitions. [2022-11-20 11:18:18,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:18:18,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1142 transitions. [2022-11-20 11:18:18,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:18,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:18,519 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:18,519 INFO L175 Difference]: Start difference. First operand has 394 places, 357 transitions, 1452 flow. Second operand 4 states and 1142 transitions. [2022-11-20 11:18:18,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 367 transitions, 1591 flow [2022-11-20 11:18:18,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 367 transitions, 1584 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:18:18,542 INFO L231 Difference]: Finished difference. Result has 397 places, 357 transitions, 1470 flow [2022-11-20 11:18:18,544 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1470, PETRI_PLACES=397, PETRI_TRANSITIONS=357} [2022-11-20 11:18:18,545 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 128 predicate places. [2022-11-20 11:18:18,545 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 357 transitions, 1470 flow [2022-11-20 11:18:18,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:18:18,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:18:18,546 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:18:18,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:18:18,547 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:18:18,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:18:18,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1253599483, now seen corresponding path program 1 times [2022-11-20 11:18:18,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:18:18,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310099858] [2022-11-20 11:18:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:18,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:18:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 11 proven. 79 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-20 11:18:20,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:18:20,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310099858] [2022-11-20 11:18:20,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310099858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:18:20,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146083737] [2022-11-20 11:18:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:18:20,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:18:20,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:18:20,973 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:18:20,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:18:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:18:21,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-20 11:18:21,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:18:21,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 11:18:21,767 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:18:21,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 11:18:22,014 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:18:22,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 11:18:22,251 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:18:22,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 11:18:22,495 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:18:22,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 11:18:22,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:18:22,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:18:22,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 11:18:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 48 proven. 47 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 11:18:23,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:18:23,275 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_555 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_555) c_~o_2~0.base) c_~o_2~0.offset) 4294967296))) is different from false [2022-11-20 11:18:23,307 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_555 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_555) |c_ULTIMATE.start_main_#t~ret10#1.base|) |c_ULTIMATE.start_main_#t~ret10#1.offset|) 4294967296))) is different from false [2022-11-20 11:18:23,317 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_555 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_555) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 4294967296))) is different from false [2022-11-20 11:18:23,324 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_555 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_555) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) is different from false [2022-11-20 11:19:46,137 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-20 11:19:46,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 73 [2022-11-20 11:19:46,150 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:19:46,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-11-20 11:20:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 39 proven. 24 refuted. 3 times theorem prover too weak. 95 trivial. 29 not checked. [2022-11-20 11:20:06,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146083737] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:20:06,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:20:06,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 27] total 69 [2022-11-20 11:20:06,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400138927] [2022-11-20 11:20:06,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:20:06,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-20 11:20:06,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:06,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-20 11:20:06,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=3841, Unknown=88, NotChecked=524, Total=4830 [2022-11-20 11:20:06,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 321 [2022-11-20 11:20:06,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 357 transitions, 1470 flow. Second operand has 70 states, 70 states have (on average 217.42857142857142) internal successors, (15220), 70 states have internal predecessors, (15220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:06,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:06,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 321 [2022-11-20 11:20:06,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:29,199 INFO L130 PetriNetUnfolder]: 6930/45500 cut-off events. [2022-11-20 11:20:29,199 INFO L131 PetriNetUnfolder]: For 19030/19033 co-relation queries the response was YES. [2022-11-20 11:20:29,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73054 conditions, 45500 events. 6930/45500 cut-off events. For 19030/19033 co-relation queries the response was YES. Maximal size of possible extension queue 844. Compared 651322 event pairs, 3132 based on Foata normal form. 2/38701 useless extension candidates. Maximal degree in co-relation 72811. Up to 5563 conditions per place. [2022-11-20 11:20:29,696 INFO L137 encePairwiseOnDemand]: 280/321 looper letters, 230 selfloop transitions, 93 changer transitions 0/515 dead transitions. [2022-11-20 11:20:29,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 515 transitions, 2701 flow [2022-11-20 11:20:29,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-20 11:20:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-20 11:20:29,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 11191 transitions. [2022-11-20 11:20:29,710 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6835868303707776 [2022-11-20 11:20:29,711 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 11191 transitions. [2022-11-20 11:20:29,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 11191 transitions. [2022-11-20 11:20:29,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:29,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 11191 transitions. [2022-11-20 11:20:29,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 219.4313725490196) internal successors, (11191), 51 states have internal predecessors, (11191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:29,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 321.0) internal successors, (16692), 52 states have internal predecessors, (16692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:29,750 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 321.0) internal successors, (16692), 52 states have internal predecessors, (16692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:29,750 INFO L175 Difference]: Start difference. First operand has 397 places, 357 transitions, 1470 flow. Second operand 51 states and 11191 transitions. [2022-11-20 11:20:29,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 515 transitions, 2701 flow [2022-11-20 11:20:29,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 515 transitions, 2667 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-20 11:20:29,899 INFO L231 Difference]: Finished difference. Result has 450 places, 374 transitions, 1780 flow [2022-11-20 11:20:29,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1780, PETRI_PLACES=450, PETRI_TRANSITIONS=374} [2022-11-20 11:20:29,900 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 181 predicate places. [2022-11-20 11:20:29,900 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 374 transitions, 1780 flow [2022-11-20 11:20:29,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 217.42857142857142) internal successors, (15220), 70 states have internal predecessors, (15220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:29,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:29,903 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:29,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:30,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:20:30,118 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:20:30,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:30,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1301352226, now seen corresponding path program 1 times [2022-11-20 11:20:30,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:30,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107181561] [2022-11-20 11:20:30,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:30,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:30,260 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 11:20:30,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:30,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107181561] [2022-11-20 11:20:30,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107181561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:20:30,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:20:30,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:20:30,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809784720] [2022-11-20 11:20:30,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:20:30,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:20:30,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:30,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:20:30,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:20:30,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 321 [2022-11-20 11:20:30,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 374 transitions, 1780 flow. Second operand has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:30,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:20:30,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 321 [2022-11-20 11:20:30,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:20:31,496 INFO L130 PetriNetUnfolder]: 188/3321 cut-off events. [2022-11-20 11:20:31,496 INFO L131 PetriNetUnfolder]: For 1678/1679 co-relation queries the response was YES. [2022-11-20 11:20:31,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 3321 events. 188/3321 cut-off events. For 1678/1679 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 25963 event pairs, 55 based on Foata normal form. 8/2894 useless extension candidates. Maximal degree in co-relation 5222. Up to 232 conditions per place. [2022-11-20 11:20:31,543 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 53 selfloop transitions, 7 changer transitions 0/382 dead transitions. [2022-11-20 11:20:31,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 382 transitions, 1929 flow [2022-11-20 11:20:31,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:20:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:20:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-20 11:20:31,546 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8878504672897196 [2022-11-20 11:20:31,546 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-20 11:20:31,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-20 11:20:31,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:20:31,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-20 11:20:31,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:31,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:31,552 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:31,552 INFO L175 Difference]: Start difference. First operand has 450 places, 374 transitions, 1780 flow. Second operand 4 states and 1140 transitions. [2022-11-20 11:20:31,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 382 transitions, 1929 flow [2022-11-20 11:20:31,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 382 transitions, 1771 flow, removed 10 selfloop flow, removed 42 redundant places. [2022-11-20 11:20:31,578 INFO L231 Difference]: Finished difference. Result has 412 places, 373 transitions, 1656 flow [2022-11-20 11:20:31,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1656, PETRI_PLACES=412, PETRI_TRANSITIONS=373} [2022-11-20 11:20:31,579 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 143 predicate places. [2022-11-20 11:20:31,579 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 373 transitions, 1656 flow [2022-11-20 11:20:31,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:20:31,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:20:31,580 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:31,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:20:31,581 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 11:20:31,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:31,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1933698258, now seen corresponding path program 1 times [2022-11-20 11:20:31,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:31,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635625850] [2022-11-20 11:20:31,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:31,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 27 proven. 158 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:20:35,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:35,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635625850] [2022-11-20 11:20:35,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635625850] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:35,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499574833] [2022-11-20 11:20:35,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:35,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:35,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:35,352 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:35,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2d9b07d-d0d0-4a24-a1ab-97d2d5119a8e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:20:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:20:35,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-20 11:20:35,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:36,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 11:20:36,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:20:36,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 11:20:36,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:20:36,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 11:20:37,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:20:37,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 11:20:37,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:20:37,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 11:20:38,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:20:38,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:20:38,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:20:38,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:20:38,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 11:20:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 48 proven. 47 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 11:20:38,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:20:38,836 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_661 (Array Int Int)) (v_ArrVal_660 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_660) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_661) c_~o_2~0.base) c_~o_2~0.offset) 4294967296))) is different from false [2022-11-20 11:20:38,885 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_661 (Array Int Int)) (v_ArrVal_660 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_660) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_661) |c_ULTIMATE.start_main_#t~ret10#1.base|) |c_ULTIMATE.start_main_#t~ret10#1.offset|) 4294967296))) is different from false [2022-11-20 11:20:39,055 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_661 (Array Int Int)) (v_ArrVal_660 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_660) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_661) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) is different from false [2022-11-20 11:21:37,325 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_fresh_int_array_~i~2#1_100| Int)) (or (forall ((v_ArrVal_654 Int) (|v_ULTIMATE.start_create_fresh_int_array_~i~2#1_98| Int) (v_ArrVal_653 Int) (|v_ULTIMATE.start_create_fresh_int_array_~i~2#1_99| Int) (v_ArrVal_661 (Array Int Int)) (v_ArrVal_659 Int) (v_ArrVal_660 (Array Int Int)) (v_ArrVal_656 Int) (|v_ULTIMATE.start_create_fresh_int_array_~i~2#1_97| Int)) (or (< |v_ULTIMATE.start_create_fresh_int_array_~i~2#1_99| (+ |v_ULTIMATE.start_create_fresh_int_array_~i~2#1_100| 1)) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~2#1_100| 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_653) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~2#1_99| 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_654) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~2#1_98| 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_656) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~2#1_97| 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_659)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_660) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_661) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) (< |v_ULTIMATE.start_create_fresh_int_array_~i~2#1_97| (+ |v_ULTIMATE.start_create_fresh_int_array_~i~2#1_98| 1)) (< |v_ULTIMATE.start_create_fresh_int_array_~i~2#1_98| (+ |v_ULTIMATE.start_create_fresh_int_array_~i~2#1_99| 1)))) (not (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post20#1| 1) |v_ULTIMATE.start_create_fresh_int_array_~i~2#1_100|)))) is different from false [2022-11-20 11:21:51,580 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-20 11:21:51,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 76 [2022-11-20 11:21:51,596 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:21:51,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 136 [2022-11-20 11:21:51,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 118 [2022-11-20 11:21:51,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2022-11-20 11:22:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 25 proven. 24 refuted. 8 times theorem prover too weak. 95 trivial. 38 not checked. [2022-11-20 11:22:10,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499574833] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:22:10,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:22:10,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 26, 29] total 81 [2022-11-20 11:22:10,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347084017] [2022-11-20 11:22:10,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:22:10,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-11-20 11:22:10,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-11-20 11:22:10,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=5427, Unknown=96, NotChecked=620, Total=6642 [2022-11-20 11:22:10,689 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 321 [2022-11-20 11:22:10,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 373 transitions, 1656 flow. Second operand has 82 states, 82 states have (on average 215.52439024390245) internal successors, (17673), 82 states have internal predecessors, (17673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:22:10,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:22:10,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 321 [2022-11-20 11:22:10,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand