./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/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_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/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_75f8b648-a7bf-4582-a710-4dbc18c09f2a/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 c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 --- 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 10:44:42,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:44:42,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:44:42,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:44:42,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:44:42,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:44:42,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:44:42,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:44:42,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:44:42,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:44:42,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:44:42,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:44:42,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:44:42,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:44:42,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:44:42,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:44:42,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:44:42,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:44:42,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:44:42,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:44:42,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:44:42,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:44:42,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:44:42,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:44:42,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:44:42,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:44:42,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:44:42,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:44:42,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:44:42,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:44:42,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:44:42,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:44:42,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:44:42,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:44:42,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:44:42,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:44:42,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:44:42,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:44:42,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:44:42,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:44:42,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:44:42,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:44:42,670 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:44:42,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:44:42,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:44:42,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:44:42,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:44:42,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:44:42,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:44:42,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:44:42,674 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:44:42,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:44:42,674 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:44:42,674 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:44:42,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:44:42,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:44:42,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:44:42,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:44:42,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:44:42,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:44:42,676 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:44:42,676 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:44:42,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:44:42,677 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:44:42,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:44:42,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:44:42,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:44:42,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:44:42,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:44:42,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:44:42,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:44:42,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:44:42,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:44:42,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:44:42,679 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:44:42,680 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:44:42,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:44:42,680 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_75f8b648-a7bf-4582-a710-4dbc18c09f2a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 [2022-11-20 10:44:42,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:44:42,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:44:43,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:44:43,006 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:44:43,007 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:44:43,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2022-11-20 10:44:46,395 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:44:46,722 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:44:46,723 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2022-11-20 10:44:46,732 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/data/d5c97fb96/adef9a3580064d708fb34bff3d8128a1/FLAG5865a4281 [2022-11-20 10:44:46,751 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/data/d5c97fb96/adef9a3580064d708fb34bff3d8128a1 [2022-11-20 10:44:46,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:44:46,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:44:46,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:44:46,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:44:46,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:44:46,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:46" (1/1) ... [2022-11-20 10:44:46,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65841414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:46, skipping insertion in model container [2022-11-20 10:44:46,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:46" (1/1) ... [2022-11-20 10:44:46,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:44:46,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:44:47,073 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_75f8b648-a7bf-4582-a710-4dbc18c09f2a/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2835,2848] [2022-11-20 10:44:47,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:44:47,105 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:44:47,158 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_75f8b648-a7bf-4582-a710-4dbc18c09f2a/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2835,2848] [2022-11-20 10:44:47,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:44:47,205 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:44:47,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:47 WrapperNode [2022-11-20 10:44:47,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:44:47,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:44:47,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:44:47,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:44:47,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:47" (1/1) ... [2022-11-20 10:44:47,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:47" (1/1) ... [2022-11-20 10:44:47,301 INFO L138 Inliner]: procedures = 25, calls = 58, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 374 [2022-11-20 10:44:47,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:44:47,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:44:47,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:44:47,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:44:47,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:47" (1/1) ... [2022-11-20 10:44:47,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:47" (1/1) ... [2022-11-20 10:44:47,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:47" (1/1) ... [2022-11-20 10:44:47,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:47" (1/1) ... [2022-11-20 10:44:47,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:47" (1/1) ... [2022-11-20 10:44:47,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:47" (1/1) ... [2022-11-20 10:44:47,345 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:47" (1/1) ... [2022-11-20 10:44:47,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:47" (1/1) ... [2022-11-20 10:44:47,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:44:47,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:44:47,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:44:47,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:44:47,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:47" (1/1) ... [2022-11-20 10:44:47,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:44:47,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:47,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:44:47,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:44:47,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:44:47,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:44:47,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:44:47,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:44:47,467 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:44:47,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:44:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:44:47,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:44:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 10:44:47,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 10:44:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:44:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 10:44:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 10:44:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:44:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:44:47,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:44:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:44:47,475 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 10:44:47,753 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:44:47,755 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:44:48,647 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:44:50,755 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:44:50,756 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 10:44:50,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:50 BoogieIcfgContainer [2022-11-20 10:44:50,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:44:50,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:44:50,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:44:50,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:44:50,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:44:46" (1/3) ... [2022-11-20 10:44:50,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610d8c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:44:50, skipping insertion in model container [2022-11-20 10:44:50,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:47" (2/3) ... [2022-11-20 10:44:50,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610d8c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:44:50, skipping insertion in model container [2022-11-20 10:44:50,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:50" (3/3) ... [2022-11-20 10:44:50,774 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2022-11-20 10:44:50,784 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:44:50,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:44:50,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2022-11-20 10:44:50,796 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:44:51,358 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:44:51,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 251 transitions, 526 flow [2022-11-20 10:44:51,668 INFO L130 PetriNetUnfolder]: 16/248 cut-off events. [2022-11-20 10:44:51,668 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:44:51,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 248 events. 16/248 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 398 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 194. Up to 2 conditions per place. [2022-11-20 10:44:51,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 251 transitions, 526 flow [2022-11-20 10:44:51,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 227 transitions, 469 flow [2022-11-20 10:44:51,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:44:51,718 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;@116a9096, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:44:51,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2022-11-20 10:44:51,747 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-20 10:44:51,747 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:44:51,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:44:51,748 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] [2022-11-20 10:44:51,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-11-20 10:44:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:51,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1654529998, now seen corresponding path program 1 times [2022-11-20 10:44:51,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:51,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758271751] [2022-11-20 10:44:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:51,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:52,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:52,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758271751] [2022-11-20 10:44:52,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758271751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:52,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:52,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:44:52,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790788361] [2022-11-20 10:44:52,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:52,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:44:52,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:52,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:44:52,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:44:52,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 251 [2022-11-20 10:44:52,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 227 transitions, 469 flow. Second operand has 4 states, 4 states have (on average 171.5) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 0 states 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 10:44:52,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:44:52,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 251 [2022-11-20 10:44:52,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:45:00,987 INFO L130 PetriNetUnfolder]: 4437/8173 cut-off events. [2022-11-20 10:45:00,988 INFO L131 PetriNetUnfolder]: For 1024/1038 co-relation queries the response was YES. [2022-11-20 10:45:01,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14539 conditions, 8173 events. 4437/8173 cut-off events. For 1024/1038 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 59604 event pairs, 2142 based on Foata normal form. 638/3369 useless extension candidates. Maximal degree in co-relation 7013. Up to 2896 conditions per place. [2022-11-20 10:45:01,120 INFO L137 encePairwiseOnDemand]: 210/251 looper letters, 84 selfloop transitions, 9 changer transitions 5/242 dead transitions. [2022-11-20 10:45:01,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 242 transitions, 700 flow [2022-11-20 10:45:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:45:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:45:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 999 transitions. [2022-11-20 10:45:01,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7960159362549801 [2022-11-20 10:45:01,146 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 999 transitions. [2022-11-20 10:45:01,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 999 transitions. [2022-11-20 10:45:01,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:45:01,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 999 transitions. [2022-11-20 10:45:01,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.8) internal successors, (999), 5 states have internal predecessors, (999), 0 states have call successors, (0), 0 states 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 10:45:01,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states 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 10:45:01,179 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states 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 10:45:01,182 INFO L175 Difference]: Start difference. First operand has 222 places, 227 transitions, 469 flow. Second operand 5 states and 999 transitions. [2022-11-20 10:45:01,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 242 transitions, 700 flow [2022-11-20 10:45:01,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 242 transitions, 682 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 10:45:01,207 INFO L231 Difference]: Finished difference. Result has 206 places, 201 transitions, 461 flow [2022-11-20 10:45:01,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=461, PETRI_PLACES=206, PETRI_TRANSITIONS=201} [2022-11-20 10:45:01,216 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, -16 predicate places. [2022-11-20 10:45:01,216 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 201 transitions, 461 flow [2022-11-20 10:45:01,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.5) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 0 states 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 10:45:01,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:45:01,218 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:01,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:45:01,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-11-20 10:45:01,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:01,221 INFO L85 PathProgramCache]: Analyzing trace with hash -457926940, now seen corresponding path program 1 times [2022-11-20 10:45:01,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:01,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407533097] [2022-11-20 10:45:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:01,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:01,589 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 10:45:01,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:01,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407533097] [2022-11-20 10:45:01,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407533097] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:01,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156450564] [2022-11-20 10:45:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:01,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:01,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:01,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:01,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:45:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:02,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:45:02,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:02,391 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 10:45:02,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:02,498 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 10:45:02,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156450564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:02,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:02,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 10:45:02,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849359226] [2022-11-20 10:45:02,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:02,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:45:02,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:02,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:45:02,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:45:02,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 251 [2022-11-20 10:45:02,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 201 transitions, 461 flow. Second operand has 12 states, 12 states have (on average 172.66666666666666) internal successors, (2072), 12 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states 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 10:45:02,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:45:02,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 251 [2022-11-20 10:45:02,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:45:20,732 INFO L130 PetriNetUnfolder]: 11091/20318 cut-off events. [2022-11-20 10:45:20,732 INFO L131 PetriNetUnfolder]: For 747/782 co-relation queries the response was YES. [2022-11-20 10:45:20,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35507 conditions, 20318 events. 11091/20318 cut-off events. For 747/782 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 159401 event pairs, 5355 based on Foata normal form. 6/6744 useless extension candidates. Maximal degree in co-relation 28204. Up to 2889 conditions per place. [2022-11-20 10:45:20,914 INFO L137 encePairwiseOnDemand]: 236/251 looper letters, 186 selfloop transitions, 40 changer transitions 0/370 dead transitions. [2022-11-20 10:45:20,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 370 transitions, 1325 flow [2022-11-20 10:45:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:45:20,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:45:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3292 transitions. [2022-11-20 10:45:20,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7286409915891987 [2022-11-20 10:45:20,924 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3292 transitions. [2022-11-20 10:45:20,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3292 transitions. [2022-11-20 10:45:20,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:45:20,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3292 transitions. [2022-11-20 10:45:20,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 182.88888888888889) internal successors, (3292), 18 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states 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 10:45:20,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states 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 10:45:20,951 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states 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 10:45:20,951 INFO L175 Difference]: Start difference. First operand has 206 places, 201 transitions, 461 flow. Second operand 18 states and 3292 transitions. [2022-11-20 10:45:20,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 370 transitions, 1325 flow [2022-11-20 10:45:20,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 370 transitions, 1320 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:45:20,965 INFO L231 Difference]: Finished difference. Result has 221 places, 228 transitions, 694 flow [2022-11-20 10:45:20,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=694, PETRI_PLACES=221, PETRI_TRANSITIONS=228} [2022-11-20 10:45:20,967 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, -1 predicate places. [2022-11-20 10:45:20,967 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 228 transitions, 694 flow [2022-11-20 10:45:20,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 172.66666666666666) internal successors, (2072), 12 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states 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 10:45:20,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:45:20,971 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:20,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:21,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:21,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-11-20 10:45:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1310831756, now seen corresponding path program 1 times [2022-11-20 10:45:21,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:21,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97899941] [2022-11-20 10:45:21,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:21,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:21,376 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 10:45:21,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:21,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97899941] [2022-11-20 10:45:21,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97899941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:21,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089869404] [2022-11-20 10:45:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:21,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:21,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:21,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:21,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:45:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:21,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:45:21,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:22,074 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 10:45:22,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:45:22,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089869404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:22,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:45:22,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:45:22,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380767609] [2022-11-20 10:45:22,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:22,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:45:22,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:22,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:45:22,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:45:22,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 251 [2022-11-20 10:45:22,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 228 transitions, 694 flow. Second operand has 6 states, 6 states have (on average 172.33333333333334) internal successors, (1034), 6 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states 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 10:45:22,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:45:22,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 251 [2022-11-20 10:45:22,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:45:36,898 INFO L130 PetriNetUnfolder]: 11091/20310 cut-off events. [2022-11-20 10:45:36,898 INFO L131 PetriNetUnfolder]: For 841/876 co-relation queries the response was YES. [2022-11-20 10:45:36,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35544 conditions, 20310 events. 11091/20310 cut-off events. For 841/876 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 159624 event pairs, 5355 based on Foata normal form. 8/6738 useless extension candidates. Maximal degree in co-relation 28404. Up to 11512 conditions per place. [2022-11-20 10:45:37,108 INFO L137 encePairwiseOnDemand]: 240/251 looper letters, 85 selfloop transitions, 27 changer transitions 0/256 dead transitions. [2022-11-20 10:45:37,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 256 transitions, 946 flow [2022-11-20 10:45:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:45:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:45:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1283 transitions. [2022-11-20 10:45:37,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.730221969265794 [2022-11-20 10:45:37,115 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1283 transitions. [2022-11-20 10:45:37,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1283 transitions. [2022-11-20 10:45:37,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:45:37,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1283 transitions. [2022-11-20 10:45:37,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.28571428571428) internal successors, (1283), 7 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states 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 10:45:37,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states 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 10:45:37,127 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states 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 10:45:37,127 INFO L175 Difference]: Start difference. First operand has 221 places, 228 transitions, 694 flow. Second operand 7 states and 1283 transitions. [2022-11-20 10:45:37,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 256 transitions, 946 flow [2022-11-20 10:45:37,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 256 transitions, 872 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-20 10:45:37,136 INFO L231 Difference]: Finished difference. Result has 216 places, 220 transitions, 620 flow [2022-11-20 10:45:37,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=620, PETRI_PLACES=216, PETRI_TRANSITIONS=220} [2022-11-20 10:45:37,138 INFO L288 CegarLoopForPetriNet]: 222 programPoint places, -6 predicate places. [2022-11-20 10:45:37,139 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 220 transitions, 620 flow [2022-11-20 10:45:37,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.33333333333334) internal successors, (1034), 6 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states 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 10:45:37,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:45:37,140 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:37,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:37,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:37,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-11-20 10:45:37,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:37,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2048188238, now seen corresponding path program 2 times [2022-11-20 10:45:37,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:37,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734212602] [2022-11-20 10:45:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:37,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:37,727 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 10:45:37,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:37,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734212602] [2022-11-20 10:45:37,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734212602] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:37,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187078491] [2022-11-20 10:45:37,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:45:37,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:37,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:37,731 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:37,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f8b648-a7bf-4582-a710-4dbc18c09f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:45:38,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:45:38,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:38,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:45:38,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:38,499 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 10:45:38,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:38,734 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 10:45:38,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187078491] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:38,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:38,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 10:45:38,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311594463] [2022-11-20 10:45:38,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:38,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:45:38,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:38,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:45:38,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:45:38,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 251 [2022-11-20 10:45:38,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 220 transitions, 620 flow. Second operand has 18 states, 18 states have (on average 153.61111111111111) internal successors, (2765), 18 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states 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 10:45:38,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:45:38,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 251 [2022-11-20 10:45:38,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand