./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a --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 c80601716e9c0111d78d12f0a88108c91b0aa7215f8e775685e33490f22c8502 --- 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-b5237d8 [2022-11-21 16:18:11,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:18:11,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:18:11,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:18:11,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:18:11,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:18:11,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:18:11,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:18:11,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:18:11,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:18:11,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:18:11,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:18:11,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:18:11,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:18:11,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:18:11,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:18:11,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:18:11,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:18:11,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:18:11,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:18:11,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:18:11,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:18:11,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:18:11,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:18:11,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:18:11,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:18:11,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:18:11,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:18:11,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:18:11,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:18:11,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:18:11,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:18:11,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:18:11,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:18:11,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:18:11,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:18:11,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:18:11,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:18:11,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:18:11,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:18:11,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:18:11,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:18:11,425 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:18:11,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:18:11,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:18:11,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:18:11,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:18:11,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:18:11,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:18:11,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:18:11,429 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:18:11,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:18:11,430 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:18:11,431 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:18:11,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:18:11,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:18:11,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:18:11,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:18:11,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:18:11,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:18:11,432 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:18:11,433 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:18:11,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:18:11,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:18:11,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:18:11,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:18:11,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:18:11,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:18:11,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:18:11,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:18:11,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:18:11,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:18:11,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:18:11,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:18:11,436 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:18:11,437 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:18:11,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:18:11,437 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_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c80601716e9c0111d78d12f0a88108c91b0aa7215f8e775685e33490f22c8502 [2022-11-21 16:18:11,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:18:11,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:18:11,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:18:11,746 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:18:11,747 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:18:11,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-11-21 16:18:14,772 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:18:15,046 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:18:15,047 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-11-21 16:18:15,054 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/data/8b3c3fdda/bafcddcfd001431080dae25bf7cff387/FLAGe2481178a [2022-11-21 16:18:15,069 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/data/8b3c3fdda/bafcddcfd001431080dae25bf7cff387 [2022-11-21 16:18:15,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:18:15,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:18:15,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:18:15,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:18:15,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:18:15,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:18:15" (1/1) ... [2022-11-21 16:18:15,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee90e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15, skipping insertion in model container [2022-11-21 16:18:15,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:18:15" (1/1) ... [2022-11-21 16:18:15,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:18:15,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:18:15,303 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_b70d562a-cc78-4f81-8f94-0f654ab3c231/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2022-11-21 16:18:15,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:18:15,337 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:18:15,362 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_b70d562a-cc78-4f81-8f94-0f654ab3c231/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2022-11-21 16:18:15,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:18:15,380 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:18:15,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15 WrapperNode [2022-11-21 16:18:15,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:18:15,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:18:15,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:18:15,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:18:15,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15" (1/1) ... [2022-11-21 16:18:15,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15" (1/1) ... [2022-11-21 16:18:15,429 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 175 [2022-11-21 16:18:15,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:18:15,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:18:15,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:18:15,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:18:15,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15" (1/1) ... [2022-11-21 16:18:15,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15" (1/1) ... [2022-11-21 16:18:15,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15" (1/1) ... [2022-11-21 16:18:15,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15" (1/1) ... [2022-11-21 16:18:15,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15" (1/1) ... [2022-11-21 16:18:15,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15" (1/1) ... [2022-11-21 16:18:15,465 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15" (1/1) ... [2022-11-21 16:18:15,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15" (1/1) ... [2022-11-21 16:18:15,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:18:15,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:18:15,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:18:15,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:18:15,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15" (1/1) ... [2022-11-21 16:18:15,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:18:15,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:18:15,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:18:15,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:18:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:18:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:18:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:18:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:18:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:18:15,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:18:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:18:15,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:18:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:18:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:18:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:18:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:18:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:18:15,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:18:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:18:15,565 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:18:15,740 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:18:15,742 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:18:16,064 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:18:16,366 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:18:16,366 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 16:18:16,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:18:16 BoogieIcfgContainer [2022-11-21 16:18:16,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:18:16,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:18:16,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:18:16,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:18:16,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:18:15" (1/3) ... [2022-11-21 16:18:16,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199d07c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:18:16, skipping insertion in model container [2022-11-21 16:18:16,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:15" (2/3) ... [2022-11-21 16:18:16,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199d07c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:18:16, skipping insertion in model container [2022-11-21 16:18:16,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:18:16" (3/3) ... [2022-11-21 16:18:16,396 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2022-11-21 16:18:16,404 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:18:16,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:18:16,413 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-21 16:18:16,413 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:18:16,497 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:18:16,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 162 transitions, 340 flow [2022-11-21 16:18:16,653 INFO L130 PetriNetUnfolder]: 11/160 cut-off events. [2022-11-21 16:18:16,653 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:18:16,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 160 events. 11/160 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2022-11-21 16:18:16,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 162 transitions, 340 flow [2022-11-21 16:18:16,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 141 transitions, 291 flow [2022-11-21 16:18:16,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:18:16,681 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;@6c8070e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:18:16,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-21 16:18:16,712 INFO L130 PetriNetUnfolder]: 3/72 cut-off events. [2022-11-21 16:18:16,712 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:18:16,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:16,714 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] [2022-11-21 16:18:16,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:18:16,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash -932682411, now seen corresponding path program 1 times [2022-11-21 16:18:16,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:16,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784090198] [2022-11-21 16:18:16,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:16,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:17,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:17,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:17,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784090198] [2022-11-21 16:18:17,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784090198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:18:17,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:18:17,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:18:17,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572071501] [2022-11-21 16:18:17,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:18:17,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:18:17,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:17,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:18:17,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:18:17,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 162 [2022-11-21 16:18:17,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 141 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:17,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:17,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 162 [2022-11-21 16:18:17,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:17,580 INFO L130 PetriNetUnfolder]: 57/368 cut-off events. [2022-11-21 16:18:17,581 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-21 16:18:17,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 368 events. 57/368 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1405 event pairs, 28 based on Foata normal form. 30/304 useless extension candidates. Maximal degree in co-relation 192. Up to 62 conditions per place. [2022-11-21 16:18:17,592 INFO L137 encePairwiseOnDemand]: 146/162 looper letters, 34 selfloop transitions, 4 changer transitions 3/148 dead transitions. [2022-11-21 16:18:17,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 148 transitions, 390 flow [2022-11-21 16:18:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:18:17,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:18:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 698 transitions. [2022-11-21 16:18:17,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2022-11-21 16:18:17,621 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 698 transitions. [2022-11-21 16:18:17,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 698 transitions. [2022-11-21 16:18:17,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:17,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 698 transitions. [2022-11-21 16:18:17,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:17,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:17,639 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:17,640 INFO L175 Difference]: Start difference. First operand has 138 places, 141 transitions, 291 flow. Second operand 5 states and 698 transitions. [2022-11-21 16:18:17,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 148 transitions, 390 flow [2022-11-21 16:18:17,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 148 transitions, 380 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:18:17,649 INFO L231 Difference]: Finished difference. Result has 139 places, 131 transitions, 290 flow [2022-11-21 16:18:17,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=139, PETRI_TRANSITIONS=131} [2022-11-21 16:18:17,655 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 1 predicate places. [2022-11-21 16:18:17,655 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 131 transitions, 290 flow [2022-11-21 16:18:17,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:17,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:17,656 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:18:17,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:18:17,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:18:17,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:17,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1791117521, now seen corresponding path program 1 times [2022-11-21 16:18:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:17,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736070701] [2022-11-21 16:18:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:17,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:17,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736070701] [2022-11-21 16:18:17,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736070701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:18:17,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864401021] [2022-11-21 16:18:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:17,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:17,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:18:17,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:18:17,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:18:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:18,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:18:18,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:18:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:18,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:18:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:18,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864401021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:18:18,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:18:18,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:18:18,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241217879] [2022-11-21 16:18:18,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:18:18,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:18:18,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:18,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:18:18,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:18:18,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 162 [2022-11-21 16:18:18,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 131 transitions, 290 flow. Second operand has 12 states, 12 states have (on average 130.66666666666666) internal successors, (1568), 12 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:18,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:18,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 162 [2022-11-21 16:18:18,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:18,700 INFO L130 PetriNetUnfolder]: 141/825 cut-off events. [2022-11-21 16:18:18,701 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-21 16:18:18,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 825 events. 141/825 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4415 event pairs, 70 based on Foata normal form. 3/608 useless extension candidates. Maximal degree in co-relation 908. Up to 57 conditions per place. [2022-11-21 16:18:18,709 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 73 selfloop transitions, 18 changer transitions 0/198 dead transitions. [2022-11-21 16:18:18,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 198 transitions, 644 flow [2022-11-21 16:18:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:18:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:18:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2398 transitions. [2022-11-21 16:18:18,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8223593964334706 [2022-11-21 16:18:18,718 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2398 transitions. [2022-11-21 16:18:18,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2398 transitions. [2022-11-21 16:18:18,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:18,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2398 transitions. [2022-11-21 16:18:18,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.22222222222223) internal successors, (2398), 18 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:18,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 162.0) internal successors, (3078), 19 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:18,736 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 162.0) internal successors, (3078), 19 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:18,736 INFO L175 Difference]: Start difference. First operand has 139 places, 131 transitions, 290 flow. Second operand 18 states and 2398 transitions. [2022-11-21 16:18:18,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 198 transitions, 644 flow [2022-11-21 16:18:18,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 198 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:18:18,745 INFO L231 Difference]: Finished difference. Result has 156 places, 143 transitions, 394 flow [2022-11-21 16:18:18,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=394, PETRI_PLACES=156, PETRI_TRANSITIONS=143} [2022-11-21 16:18:18,746 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 18 predicate places. [2022-11-21 16:18:18,746 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 143 transitions, 394 flow [2022-11-21 16:18:18,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.66666666666666) internal successors, (1568), 12 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:18,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:18,749 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:18:18,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:18:18,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-21 16:18:18,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:18:18,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:18,957 INFO L85 PathProgramCache]: Analyzing trace with hash 309932108, now seen corresponding path program 1 times [2022-11-21 16:18:18,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:18,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982035203] [2022-11-21 16:18:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:18,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:19,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:19,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982035203] [2022-11-21 16:18:19,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982035203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:18:19,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290836980] [2022-11-21 16:18:19,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:19,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:19,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:18:19,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:18:19,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:18:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:19,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:18:19,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:18:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:19,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:18:19,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290836980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:18:19,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:18:19,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:18:19,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226491161] [2022-11-21 16:18:19,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:18:19,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:18:19,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:19,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:18:19,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:18:19,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 162 [2022-11-21 16:18:19,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 143 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:19,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:19,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 162 [2022-11-21 16:18:19,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:19,638 INFO L130 PetriNetUnfolder]: 141/821 cut-off events. [2022-11-21 16:18:19,638 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-21 16:18:19,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1218 conditions, 821 events. 141/821 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4380 event pairs, 70 based on Foata normal form. 4/605 useless extension candidates. Maximal degree in co-relation 960. Up to 212 conditions per place. [2022-11-21 16:18:19,645 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 35 selfloop transitions, 11 changer transitions 0/153 dead transitions. [2022-11-21 16:18:19,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 153 transitions, 493 flow [2022-11-21 16:18:19,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:18:19,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:18:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 934 transitions. [2022-11-21 16:18:19,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8236331569664903 [2022-11-21 16:18:19,649 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 934 transitions. [2022-11-21 16:18:19,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 934 transitions. [2022-11-21 16:18:19,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:19,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 934 transitions. [2022-11-21 16:18:19,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.42857142857142) internal successors, (934), 7 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:19,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:19,655 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:19,656 INFO L175 Difference]: Start difference. First operand has 156 places, 143 transitions, 394 flow. Second operand 7 states and 934 transitions. [2022-11-21 16:18:19,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 153 transitions, 493 flow [2022-11-21 16:18:19,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 461 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-21 16:18:19,661 INFO L231 Difference]: Finished difference. Result has 152 places, 139 transitions, 357 flow [2022-11-21 16:18:19,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2022-11-21 16:18:19,662 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 14 predicate places. [2022-11-21 16:18:19,663 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 357 flow [2022-11-21 16:18:19,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:19,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:19,663 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:18:19,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:18:19,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:19,869 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:18:19,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:19,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1466865984, now seen corresponding path program 1 times [2022-11-21 16:18:19,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:19,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506685477] [2022-11-21 16:18:19,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:19,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:20,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:20,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506685477] [2022-11-21 16:18:20,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506685477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:18:20,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:18:20,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:18:20,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629300415] [2022-11-21 16:18:20,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:18:20,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:18:20,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:20,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:18:20,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:18:20,123 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 162 [2022-11-21 16:18:20,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:20,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:20,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 162 [2022-11-21 16:18:20,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:20,378 INFO L130 PetriNetUnfolder]: 113/708 cut-off events. [2022-11-21 16:18:20,379 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-21 16:18:20,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 708 events. 113/708 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3514 event pairs, 56 based on Foata normal form. 5/535 useless extension candidates. Maximal degree in co-relation 900. Up to 221 conditions per place. [2022-11-21 16:18:20,384 INFO L137 encePairwiseOnDemand]: 149/162 looper letters, 27 selfloop transitions, 6 changer transitions 3/144 dead transitions. [2022-11-21 16:18:20,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 144 transitions, 442 flow [2022-11-21 16:18:20,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:18:20,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:18:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 918 transitions. [2022-11-21 16:18:20,388 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2022-11-21 16:18:20,388 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 918 transitions. [2022-11-21 16:18:20,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 918 transitions. [2022-11-21 16:18:20,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:20,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 918 transitions. [2022-11-21 16:18:20,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.14285714285714) internal successors, (918), 7 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:20,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:20,395 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:20,396 INFO L175 Difference]: Start difference. First operand has 152 places, 139 transitions, 357 flow. Second operand 7 states and 918 transitions. [2022-11-21 16:18:20,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 144 transitions, 442 flow [2022-11-21 16:18:20,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 144 transitions, 428 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:18:20,404 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 371 flow [2022-11-21 16:18:20,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2022-11-21 16:18:20,406 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 17 predicate places. [2022-11-21 16:18:20,407 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 371 flow [2022-11-21 16:18:20,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:20,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:20,408 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:18:20,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:18:20,408 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:18:20,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:20,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1348639142, now seen corresponding path program 1 times [2022-11-21 16:18:20,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:20,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780607372] [2022-11-21 16:18:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:20,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:20,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:20,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780607372] [2022-11-21 16:18:20,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780607372] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:18:20,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932002608] [2022-11-21 16:18:20,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:20,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:20,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:18:20,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:18:20,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:18:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:20,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:18:20,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:18:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:18:20,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:18:20,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932002608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:18:20,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:18:20,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-21 16:18:20,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973981058] [2022-11-21 16:18:20,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:18:20,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:18:20,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:20,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:18:20,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:18:20,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 162 [2022-11-21 16:18:20,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:20,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:20,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 162 [2022-11-21 16:18:20,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:20,972 INFO L130 PetriNetUnfolder]: 45/501 cut-off events. [2022-11-21 16:18:20,972 INFO L131 PetriNetUnfolder]: For 79/103 co-relation queries the response was YES. [2022-11-21 16:18:20,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 501 events. 45/501 cut-off events. For 79/103 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2154 event pairs, 20 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 633. Up to 84 conditions per place. [2022-11-21 16:18:20,976 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 9 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2022-11-21 16:18:20,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 136 transitions, 383 flow [2022-11-21 16:18:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:18:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-21 16:18:20,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 551 transitions. [2022-11-21 16:18:20,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8503086419753086 [2022-11-21 16:18:20,979 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 551 transitions. [2022-11-21 16:18:20,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 551 transitions. [2022-11-21 16:18:20,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:20,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 551 transitions. [2022-11-21 16:18:20,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:20,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:20,983 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:20,983 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 371 flow. Second operand 4 states and 551 transitions. [2022-11-21 16:18:20,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 136 transitions, 383 flow [2022-11-21 16:18:20,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 136 transitions, 371 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:18:20,989 INFO L231 Difference]: Finished difference. Result has 149 places, 136 transitions, 353 flow [2022-11-21 16:18:20,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=149, PETRI_TRANSITIONS=136} [2022-11-21 16:18:20,992 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 11 predicate places. [2022-11-21 16:18:20,992 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 136 transitions, 353 flow [2022-11-21 16:18:20,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:20,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:20,993 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] [2022-11-21 16:18:20,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-21 16:18:21,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:21,198 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:18:21,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:21,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2108780891, now seen corresponding path program 1 times [2022-11-21 16:18:21,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:21,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586540533] [2022-11-21 16:18:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:21,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:18:21,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:21,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586540533] [2022-11-21 16:18:21,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586540533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:18:21,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:18:21,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:18:21,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073743031] [2022-11-21 16:18:21,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:18:21,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:18:21,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:21,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:18:21,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:18:21,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 162 [2022-11-21 16:18:21,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 136 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:21,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:21,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 162 [2022-11-21 16:18:21,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:21,512 INFO L130 PetriNetUnfolder]: 237/977 cut-off events. [2022-11-21 16:18:21,512 INFO L131 PetriNetUnfolder]: For 166/286 co-relation queries the response was YES. [2022-11-21 16:18:21,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 977 events. 237/977 cut-off events. For 166/286 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6082 event pairs, 80 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 1841. Up to 305 conditions per place. [2022-11-21 16:18:21,518 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 28 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2022-11-21 16:18:21,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 152 transitions, 466 flow [2022-11-21 16:18:21,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:18:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:18:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2022-11-21 16:18:21,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-11-21 16:18:21,521 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2022-11-21 16:18:21,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2022-11-21 16:18:21,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:21,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2022-11-21 16:18:21,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:21,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:21,526 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:21,526 INFO L175 Difference]: Start difference. First operand has 149 places, 136 transitions, 353 flow. Second operand 5 states and 684 transitions. [2022-11-21 16:18:21,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 152 transitions, 466 flow [2022-11-21 16:18:21,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 152 transitions, 460 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:18:21,530 INFO L231 Difference]: Finished difference. Result has 153 places, 139 transitions, 377 flow [2022-11-21 16:18:21,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=153, PETRI_TRANSITIONS=139} [2022-11-21 16:18:21,534 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 15 predicate places. [2022-11-21 16:18:21,534 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 139 transitions, 377 flow [2022-11-21 16:18:21,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:21,535 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:21,535 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] [2022-11-21 16:18:21,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:18:21,535 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:18:21,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:21,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1709936893, now seen corresponding path program 1 times [2022-11-21 16:18:21,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:21,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693120361] [2022-11-21 16:18:21,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:21,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:18:21,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:21,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693120361] [2022-11-21 16:18:21,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693120361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:18:21,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:18:21,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:18:21,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18430483] [2022-11-21 16:18:21,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:18:21,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:18:21,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:21,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:18:21,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:18:21,729 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 162 [2022-11-21 16:18:21,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 139 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:21,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:21,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 162 [2022-11-21 16:18:21,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:21,869 INFO L130 PetriNetUnfolder]: 65/801 cut-off events. [2022-11-21 16:18:21,870 INFO L131 PetriNetUnfolder]: For 138/178 co-relation queries the response was YES. [2022-11-21 16:18:21,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 801 events. 65/801 cut-off events. For 138/178 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4656 event pairs, 16 based on Foata normal form. 4/705 useless extension candidates. Maximal degree in co-relation 1116. Up to 124 conditions per place. [2022-11-21 16:18:21,874 INFO L137 encePairwiseOnDemand]: 158/162 looper letters, 10 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2022-11-21 16:18:21,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 142 transitions, 415 flow [2022-11-21 16:18:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:18:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:18:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2022-11-21 16:18:21,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8683127572016461 [2022-11-21 16:18:21,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2022-11-21 16:18:21,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2022-11-21 16:18:21,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:21,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2022-11-21 16:18:21,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:21,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:21,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:21,882 INFO L175 Difference]: Start difference. First operand has 153 places, 139 transitions, 377 flow. Second operand 3 states and 422 transitions. [2022-11-21 16:18:21,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 142 transitions, 415 flow [2022-11-21 16:18:21,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 142 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:18:21,889 INFO L231 Difference]: Finished difference. Result has 155 places, 141 transitions, 398 flow [2022-11-21 16:18:21,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=155, PETRI_TRANSITIONS=141} [2022-11-21 16:18:21,890 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 17 predicate places. [2022-11-21 16:18:21,891 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 141 transitions, 398 flow [2022-11-21 16:18:21,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:21,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:21,891 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] [2022-11-21 16:18:21,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:18:21,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:18:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1710692693, now seen corresponding path program 1 times [2022-11-21 16:18:21,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:21,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583131541] [2022-11-21 16:18:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:21,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:23,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:23,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583131541] [2022-11-21 16:18:23,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583131541] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:18:23,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607368702] [2022-11-21 16:18:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:23,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:23,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:18:23,719 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:18:23,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:18:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-21 16:18:23,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:18:24,538 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 [2022-11-21 16:18:25,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:25,620 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 18 treesize of output 20 [2022-11-21 16:18:25,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:25,835 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 18 treesize of output 20 [2022-11-21 16:18:26,188 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-21 16:18:26,191 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 23 treesize of output 10 [2022-11-21 16:18:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:26,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:18:27,609 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:18:27,610 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 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-21 16:18:27,623 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:18:27,624 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 158 treesize of output 146 [2022-11-21 16:18:27,633 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 130 treesize of output 118 [2022-11-21 16:18:27,641 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 94 [2022-11-21 16:18:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:29,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607368702] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:18:29,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:18:29,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2022-11-21 16:18:29,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936278081] [2022-11-21 16:18:29,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:18:29,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-21 16:18:29,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:29,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-21 16:18:29,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=3767, Unknown=5, NotChecked=0, Total=4032 [2022-11-21 16:18:29,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-11-21 16:18:29,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 141 transitions, 398 flow. Second operand has 64 states, 64 states have (on average 80.953125) internal successors, (5181), 64 states have internal predecessors, (5181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:29,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:29,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-11-21 16:18:29,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:46,971 INFO L130 PetriNetUnfolder]: 1219/3960 cut-off events. [2022-11-21 16:18:46,971 INFO L131 PetriNetUnfolder]: For 2416/2856 co-relation queries the response was YES. [2022-11-21 16:18:46,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8497 conditions, 3960 events. 1219/3960 cut-off events. For 2416/2856 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 35853 event pairs, 176 based on Foata normal form. 0/3490 useless extension candidates. Maximal degree in co-relation 8370. Up to 777 conditions per place. [2022-11-21 16:18:47,000 INFO L137 encePairwiseOnDemand]: 130/162 looper letters, 146 selfloop transitions, 68 changer transitions 0/280 dead transitions. [2022-11-21 16:18:47,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 280 transitions, 1297 flow [2022-11-21 16:18:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 16:18:47,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-21 16:18:47,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3447 transitions. [2022-11-21 16:18:47,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.518970189701897 [2022-11-21 16:18:47,010 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3447 transitions. [2022-11-21 16:18:47,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3447 transitions. [2022-11-21 16:18:47,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:47,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3447 transitions. [2022-11-21 16:18:47,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 84.07317073170732) internal successors, (3447), 41 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:47,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 162.0) internal successors, (6804), 42 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:47,036 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 162.0) internal successors, (6804), 42 states have internal predecessors, (6804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:47,036 INFO L175 Difference]: Start difference. First operand has 155 places, 141 transitions, 398 flow. Second operand 41 states and 3447 transitions. [2022-11-21 16:18:47,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 280 transitions, 1297 flow [2022-11-21 16:18:47,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 280 transitions, 1202 flow, removed 45 selfloop flow, removed 2 redundant places. [2022-11-21 16:18:47,046 INFO L231 Difference]: Finished difference. Result has 212 places, 189 transitions, 818 flow [2022-11-21 16:18:47,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=818, PETRI_PLACES=212, PETRI_TRANSITIONS=189} [2022-11-21 16:18:47,049 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 74 predicate places. [2022-11-21 16:18:47,049 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 189 transitions, 818 flow [2022-11-21 16:18:47,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 80.953125) internal successors, (5181), 64 states have internal predecessors, (5181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:47,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:47,052 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] [2022-11-21 16:18:47,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:18:47,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:47,283 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:18:47,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:47,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1676975543, now seen corresponding path program 2 times [2022-11-21 16:18:47,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:47,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847789094] [2022-11-21 16:18:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:47,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:48,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:48,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847789094] [2022-11-21 16:18:48,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847789094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:18:48,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126410814] [2022-11-21 16:18:48,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:18:48,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:48,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:18:48,272 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:18:48,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:18:48,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:18:48,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:18:48,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:18:48,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:18:48,768 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-21 16:18:48,768 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 23 treesize of output 10 [2022-11-21 16:18:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:18:48,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:18:48,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126410814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:18:48,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:18:48,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-21 16:18:48,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737789223] [2022-11-21 16:18:48,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:18:48,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:18:48,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:48,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:18:48,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:18:48,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-21 16:18:48,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 189 transitions, 818 flow. Second operand has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:48,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:48,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-21 16:18:48,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:49,691 INFO L130 PetriNetUnfolder]: 1246/3937 cut-off events. [2022-11-21 16:18:49,692 INFO L131 PetriNetUnfolder]: For 13658/14728 co-relation queries the response was YES. [2022-11-21 16:18:49,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11152 conditions, 3937 events. 1246/3937 cut-off events. For 13658/14728 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 35588 event pairs, 476 based on Foata normal form. 36/3489 useless extension candidates. Maximal degree in co-relation 11013. Up to 2077 conditions per place. [2022-11-21 16:18:49,726 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 83 selfloop transitions, 15 changer transitions 1/216 dead transitions. [2022-11-21 16:18:49,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 216 transitions, 1140 flow [2022-11-21 16:18:49,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:18:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:18:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 750 transitions. [2022-11-21 16:18:49,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7716049382716049 [2022-11-21 16:18:49,729 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 750 transitions. [2022-11-21 16:18:49,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 750 transitions. [2022-11-21 16:18:49,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:49,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 750 transitions. [2022-11-21 16:18:49,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:49,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:49,735 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:49,735 INFO L175 Difference]: Start difference. First operand has 212 places, 189 transitions, 818 flow. Second operand 6 states and 750 transitions. [2022-11-21 16:18:49,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 216 transitions, 1140 flow [2022-11-21 16:18:49,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 216 transitions, 1070 flow, removed 17 selfloop flow, removed 15 redundant places. [2022-11-21 16:18:49,817 INFO L231 Difference]: Finished difference. Result has 204 places, 197 transitions, 856 flow [2022-11-21 16:18:49,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=856, PETRI_PLACES=204, PETRI_TRANSITIONS=197} [2022-11-21 16:18:49,819 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 66 predicate places. [2022-11-21 16:18:49,819 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 197 transitions, 856 flow [2022-11-21 16:18:49,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:49,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:49,820 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] [2022-11-21 16:18:49,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:18:50,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:50,025 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:18:50,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:50,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1677988437, now seen corresponding path program 1 times [2022-11-21 16:18:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:50,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427022464] [2022-11-21 16:18:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:51,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:51,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427022464] [2022-11-21 16:18:51,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427022464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:18:51,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354998338] [2022-11-21 16:18:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:51,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:51,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:18:51,568 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:18:51,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:18:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:51,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-21 16:18:51,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:18:52,400 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 [2022-11-21 16:18:53,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:53,444 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 18 treesize of output 20 [2022-11-21 16:18:53,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:53,651 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 18 treesize of output 20 [2022-11-21 16:18:54,009 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-21 16:18:54,009 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 23 treesize of output 10 [2022-11-21 16:18:54,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:54,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:18:55,340 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:18:55,341 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 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-21 16:18:55,354 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:18:55,355 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 80 treesize of output 76 [2022-11-21 16:18:55,366 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 60 treesize of output 48 [2022-11-21 16:18:55,377 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 26 treesize of output 20 [2022-11-21 16:18:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:57,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354998338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:18:57,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:18:57,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-11-21 16:18:57,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459956069] [2022-11-21 16:18:57,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:18:57,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-21 16:18:57,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:57,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-21 16:18:57,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=3181, Unknown=8, NotChecked=0, Total=3422 [2022-11-21 16:18:57,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2022-11-21 16:18:57,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 197 transitions, 856 flow. Second operand has 59 states, 59 states have (on average 84.08474576271186) internal successors, (4961), 59 states have internal predecessors, (4961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:57,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:57,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2022-11-21 16:18:57,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:19:11,040 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 99 DAG size of output: 87 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:19:19,683 WARN L233 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 106 DAG size of output: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:19:53,021 INFO L130 PetriNetUnfolder]: 1763/5963 cut-off events. [2022-11-21 16:19:53,021 INFO L131 PetriNetUnfolder]: For 21073/21873 co-relation queries the response was YES. [2022-11-21 16:19:53,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16814 conditions, 5963 events. 1763/5963 cut-off events. For 21073/21873 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 61111 event pairs, 270 based on Foata normal form. 176/5641 useless extension candidates. Maximal degree in co-relation 16662. Up to 977 conditions per place. [2022-11-21 16:19:53,067 INFO L137 encePairwiseOnDemand]: 125/162 looper letters, 259 selfloop transitions, 166 changer transitions 2/496 dead transitions. [2022-11-21 16:19:53,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 496 transitions, 3411 flow [2022-11-21 16:19:53,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-21 16:19:53,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-11-21 16:19:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 6042 transitions. [2022-11-21 16:19:53,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5405260332796564 [2022-11-21 16:19:53,079 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 6042 transitions. [2022-11-21 16:19:53,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 6042 transitions. [2022-11-21 16:19:53,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:19:53,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 6042 transitions. [2022-11-21 16:19:53,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 87.56521739130434) internal successors, (6042), 69 states have internal predecessors, (6042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:19:53,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 162.0) internal successors, (11340), 70 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:19:53,201 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 162.0) internal successors, (11340), 70 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:19:53,201 INFO L175 Difference]: Start difference. First operand has 204 places, 197 transitions, 856 flow. Second operand 69 states and 6042 transitions. [2022-11-21 16:19:53,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 496 transitions, 3411 flow [2022-11-21 16:19:53,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 496 transitions, 3398 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-21 16:19:53,263 INFO L231 Difference]: Finished difference. Result has 292 places, 314 transitions, 2532 flow [2022-11-21 16:19:53,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=2532, PETRI_PLACES=292, PETRI_TRANSITIONS=314} [2022-11-21 16:19:53,264 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 154 predicate places. [2022-11-21 16:19:53,264 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 314 transitions, 2532 flow [2022-11-21 16:19:53,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 84.08474576271186) internal successors, (4961), 59 states have internal predecessors, (4961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:19:53,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:19:53,266 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:19:53,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:19:53,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 16:19:53,473 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:19:53,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:53,474 INFO L85 PathProgramCache]: Analyzing trace with hash 506604634, now seen corresponding path program 1 times [2022-11-21 16:19:53,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:53,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636631752] [2022-11-21 16:19:53,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:53,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:53,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:19:53,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:53,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636631752] [2022-11-21 16:19:53,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636631752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:19:53,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384352124] [2022-11-21 16:19:53,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:53,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:19:53,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:19:53,609 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:19:53,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:19:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:53,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:19:53,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:19:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:19:54,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:19:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:19:54,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384352124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:19:54,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:19:54,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-21 16:19:54,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188282725] [2022-11-21 16:19:54,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:19:54,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:19:54,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:54,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:19:54,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:19:54,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 162 [2022-11-21 16:19:54,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 314 transitions, 2532 flow. Second operand has 19 states, 19 states have (on average 113.36842105263158) internal successors, (2154), 19 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:19:54,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:19:54,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 162 [2022-11-21 16:19:54,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:19:56,325 INFO L130 PetriNetUnfolder]: 1340/4610 cut-off events. [2022-11-21 16:19:56,325 INFO L131 PetriNetUnfolder]: For 46422/47311 co-relation queries the response was YES. [2022-11-21 16:19:56,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18991 conditions, 4610 events. 1340/4610 cut-off events. For 46422/47311 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 41812 event pairs, 188 based on Foata normal form. 203/4243 useless extension candidates. Maximal degree in co-relation 18816. Up to 1156 conditions per place. [2022-11-21 16:19:56,369 INFO L137 encePairwiseOnDemand]: 144/162 looper letters, 148 selfloop transitions, 30 changer transitions 0/286 dead transitions. [2022-11-21 16:19:56,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 286 transitions, 2371 flow [2022-11-21 16:19:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 16:19:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-21 16:19:56,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2508 transitions. [2022-11-21 16:19:56,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2022-11-21 16:19:56,374 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2508 transitions. [2022-11-21 16:19:56,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2508 transitions. [2022-11-21 16:19:56,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:19:56,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2508 transitions. [2022-11-21 16:19:56,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 114.0) internal successors, (2508), 22 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:19:56,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 162.0) internal successors, (3726), 23 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:19:56,385 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 162.0) internal successors, (3726), 23 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:19:56,386 INFO L175 Difference]: Start difference. First operand has 292 places, 314 transitions, 2532 flow. Second operand 22 states and 2508 transitions. [2022-11-21 16:19:56,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 286 transitions, 2371 flow [2022-11-21 16:19:56,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 286 transitions, 1943 flow, removed 165 selfloop flow, removed 44 redundant places. [2022-11-21 16:19:56,631 INFO L231 Difference]: Finished difference. Result has 245 places, 198 transitions, 1040 flow [2022-11-21 16:19:56,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1040, PETRI_PLACES=245, PETRI_TRANSITIONS=198} [2022-11-21 16:19:56,632 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 107 predicate places. [2022-11-21 16:19:56,632 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 198 transitions, 1040 flow [2022-11-21 16:19:56,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 113.36842105263158) internal successors, (2154), 19 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:19:56,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:19:56,633 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] [2022-11-21 16:19:56,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 16:19:56,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 16:19:56,839 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:19:56,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:56,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1947187217, now seen corresponding path program 1 times [2022-11-21 16:19:56,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:56,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577970127] [2022-11-21 16:19:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:56,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:19:58,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:58,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577970127] [2022-11-21 16:19:58,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577970127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:19:58,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246297988] [2022-11-21 16:19:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:58,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:19:58,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:19:58,895 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:19:58,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:19:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:59,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-21 16:19:59,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:19:59,818 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 [2022-11-21 16:20:01,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:20:01,006 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 20 treesize of output 22 [2022-11-21 16:20:01,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:20:01,409 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 20 treesize of output 22 [2022-11-21 16:20:01,751 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-21 16:20:01,751 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 25 treesize of output 12 [2022-11-21 16:20:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:01,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:20:02,100 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_226 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_226) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) is different from false [2022-11-21 16:20:03,355 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:20:03,355 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 1 case distinctions, treesize of input 31 treesize of output 32 [2022-11-21 16:20:03,370 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:20:03,370 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 174 treesize of output 162 [2022-11-21 16:20:03,380 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 146 treesize of output 122 [2022-11-21 16:20:03,397 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 110 [2022-11-21 16:20:05,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:05,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246297988] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:20:05,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:20:05,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2022-11-21 16:20:05,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245543371] [2022-11-21 16:20:05,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:20:05,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-21 16:20:05,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:05,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-21 16:20:05,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=3652, Unknown=3, NotChecked=122, Total=4032 [2022-11-21 16:20:05,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-11-21 16:20:05,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 198 transitions, 1040 flow. Second operand has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:05,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:05,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-11-21 16:20:05,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:18,972 INFO L130 PetriNetUnfolder]: 1410/4490 cut-off events. [2022-11-21 16:20:18,972 INFO L131 PetriNetUnfolder]: For 30716/31586 co-relation queries the response was YES. [2022-11-21 16:20:18,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16580 conditions, 4490 events. 1410/4490 cut-off events. For 30716/31586 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 42331 event pairs, 196 based on Foata normal form. 311/4562 useless extension candidates. Maximal degree in co-relation 16406. Up to 990 conditions per place. [2022-11-21 16:20:19,015 INFO L137 encePairwiseOnDemand]: 126/162 looper letters, 127 selfloop transitions, 67 changer transitions 1/269 dead transitions. [2022-11-21 16:20:19,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 269 transitions, 1856 flow [2022-11-21 16:20:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:20:19,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 16:20:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3095 transitions. [2022-11-21 16:20:19,021 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5163496830163496 [2022-11-21 16:20:19,021 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3095 transitions. [2022-11-21 16:20:19,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3095 transitions. [2022-11-21 16:20:19,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:19,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3095 transitions. [2022-11-21 16:20:19,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 83.64864864864865) internal successors, (3095), 37 states have internal predecessors, (3095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:19,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 162.0) internal successors, (6156), 38 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:19,039 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 162.0) internal successors, (6156), 38 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:19,039 INFO L175 Difference]: Start difference. First operand has 245 places, 198 transitions, 1040 flow. Second operand 37 states and 3095 transitions. [2022-11-21 16:20:19,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 269 transitions, 1856 flow [2022-11-21 16:20:19,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 269 transitions, 1814 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-11-21 16:20:19,159 INFO L231 Difference]: Finished difference. Result has 274 places, 207 transitions, 1235 flow [2022-11-21 16:20:19,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1235, PETRI_PLACES=274, PETRI_TRANSITIONS=207} [2022-11-21 16:20:19,160 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 136 predicate places. [2022-11-21 16:20:19,160 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 207 transitions, 1235 flow [2022-11-21 16:20:19,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:19,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:19,162 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] [2022-11-21 16:20:19,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:19,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 16:20:19,378 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:20:19,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:19,379 INFO L85 PathProgramCache]: Analyzing trace with hash 446634859, now seen corresponding path program 2 times [2022-11-21 16:20:19,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:19,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639988523] [2022-11-21 16:20:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:19,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:21,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:21,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639988523] [2022-11-21 16:20:21,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639988523] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:21,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082217408] [2022-11-21 16:20:21,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:20:21,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:21,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:21,335 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:21,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 16:20:21,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:20:21,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:20:21,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:20:21,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:21,770 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 23 treesize of output 7 [2022-11-21 16:20:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:20:21,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:20:21,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082217408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:21,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:20:21,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 26 [2022-11-21 16:20:21,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428915631] [2022-11-21 16:20:21,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:21,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:20:21,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:21,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:20:21,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-11-21 16:20:21,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-21 16:20:21,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 207 transitions, 1235 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:21,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:21,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-21 16:20:21,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:22,787 INFO L130 PetriNetUnfolder]: 1398/4485 cut-off events. [2022-11-21 16:20:22,787 INFO L131 PetriNetUnfolder]: For 37627/38963 co-relation queries the response was YES. [2022-11-21 16:20:22,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18150 conditions, 4485 events. 1398/4485 cut-off events. For 37627/38963 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 41767 event pairs, 526 based on Foata normal form. 59/4164 useless extension candidates. Maximal degree in co-relation 17989. Up to 2466 conditions per place. [2022-11-21 16:20:22,840 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 84 selfloop transitions, 16 changer transitions 1/226 dead transitions. [2022-11-21 16:20:22,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 226 transitions, 1561 flow [2022-11-21 16:20:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:20:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:20:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 749 transitions. [2022-11-21 16:20:22,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7705761316872428 [2022-11-21 16:20:22,843 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 749 transitions. [2022-11-21 16:20:22,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 749 transitions. [2022-11-21 16:20:22,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:22,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 749 transitions. [2022-11-21 16:20:22,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:22,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:22,849 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:22,849 INFO L175 Difference]: Start difference. First operand has 274 places, 207 transitions, 1235 flow. Second operand 6 states and 749 transitions. [2022-11-21 16:20:22,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 226 transitions, 1561 flow [2022-11-21 16:20:23,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 226 transitions, 1422 flow, removed 18 selfloop flow, removed 33 redundant places. [2022-11-21 16:20:23,016 INFO L231 Difference]: Finished difference. Result has 247 places, 207 transitions, 1156 flow [2022-11-21 16:20:23,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1156, PETRI_PLACES=247, PETRI_TRANSITIONS=207} [2022-11-21 16:20:23,018 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 109 predicate places. [2022-11-21 16:20:23,018 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 207 transitions, 1156 flow [2022-11-21 16:20:23,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:23,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:23,019 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:20:23,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:23,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 16:20:23,226 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:20:23,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:23,227 INFO L85 PathProgramCache]: Analyzing trace with hash -463962155, now seen corresponding path program 2 times [2022-11-21 16:20:23,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:23,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371291391] [2022-11-21 16:20:23,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:23,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:23,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:23,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371291391] [2022-11-21 16:20:23,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371291391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:23,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020628340] [2022-11-21 16:20:23,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:20:23,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:23,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:23,525 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:23,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 16:20:23,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:20:23,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:20:23,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:20:23,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 16:20:23,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:20:24,287 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 16:20:24,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020628340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:20:24,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:20:24,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-21 16:20:24,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729157590] [2022-11-21 16:20:24,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:20:24,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:20:24,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:24,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:20:24,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:20:24,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 162 [2022-11-21 16:20:24,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 207 transitions, 1156 flow. Second operand has 18 states, 18 states have (on average 121.61111111111111) internal successors, (2189), 18 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:24,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:24,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 162 [2022-11-21 16:20:24,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:26,067 INFO L130 PetriNetUnfolder]: 833/4554 cut-off events. [2022-11-21 16:20:26,068 INFO L131 PetriNetUnfolder]: For 29209/30007 co-relation queries the response was YES. [2022-11-21 16:20:26,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16024 conditions, 4554 events. 833/4554 cut-off events. For 29209/30007 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 44816 event pairs, 337 based on Foata normal form. 31/4151 useless extension candidates. Maximal degree in co-relation 15874. Up to 749 conditions per place. [2022-11-21 16:20:26,126 INFO L137 encePairwiseOnDemand]: 151/162 looper letters, 164 selfloop transitions, 25 changer transitions 0/323 dead transitions. [2022-11-21 16:20:26,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 323 transitions, 2671 flow [2022-11-21 16:20:26,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 16:20:26,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 16:20:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2931 transitions. [2022-11-21 16:20:26,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.753858024691358 [2022-11-21 16:20:26,134 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2931 transitions. [2022-11-21 16:20:26,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2931 transitions. [2022-11-21 16:20:26,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:26,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2931 transitions. [2022-11-21 16:20:26,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 122.125) internal successors, (2931), 24 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:26,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 162.0) internal successors, (4050), 25 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:26,151 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 162.0) internal successors, (4050), 25 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:26,151 INFO L175 Difference]: Start difference. First operand has 247 places, 207 transitions, 1156 flow. Second operand 24 states and 2931 transitions. [2022-11-21 16:20:26,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 323 transitions, 2671 flow [2022-11-21 16:20:26,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 323 transitions, 2583 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-21 16:20:26,477 INFO L231 Difference]: Finished difference. Result has 261 places, 211 transitions, 1199 flow [2022-11-21 16:20:26,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1199, PETRI_PLACES=261, PETRI_TRANSITIONS=211} [2022-11-21 16:20:26,478 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 123 predicate places. [2022-11-21 16:20:26,478 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 211 transitions, 1199 flow [2022-11-21 16:20:26,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 121.61111111111111) internal successors, (2189), 18 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:26,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:26,480 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:20:26,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:26,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 16:20:26,686 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:20:26,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:26,687 INFO L85 PathProgramCache]: Analyzing trace with hash 307542054, now seen corresponding path program 1 times [2022-11-21 16:20:26,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:26,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671290732] [2022-11-21 16:20:26,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:26,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:20:26,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:26,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671290732] [2022-11-21 16:20:26,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671290732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:26,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490099405] [2022-11-21 16:20:26,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:26,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:26,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:26,851 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:26,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 16:20:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 16:20:26,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:27,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:20:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:28,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490099405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:20:28,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:20:28,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 22 [2022-11-21 16:20:28,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355629308] [2022-11-21 16:20:28,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:20:28,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:20:28,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:28,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:20:28,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:20:28,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 162 [2022-11-21 16:20:28,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 211 transitions, 1199 flow. Second operand has 22 states, 22 states have (on average 120.04545454545455) internal successors, (2641), 22 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:28,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:28,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 162 [2022-11-21 16:20:28,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:30,778 INFO L130 PetriNetUnfolder]: 948/6309 cut-off events. [2022-11-21 16:20:30,778 INFO L131 PetriNetUnfolder]: For 40286/41081 co-relation queries the response was YES. [2022-11-21 16:20:30,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21813 conditions, 6309 events. 948/6309 cut-off events. For 40286/41081 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 68414 event pairs, 263 based on Foata normal form. 236/6037 useless extension candidates. Maximal degree in co-relation 20990. Up to 979 conditions per place. [2022-11-21 16:20:30,844 INFO L137 encePairwiseOnDemand]: 146/162 looper letters, 48 selfloop transitions, 37 changer transitions 39/235 dead transitions. [2022-11-21 16:20:30,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 235 transitions, 1618 flow [2022-11-21 16:20:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 16:20:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 16:20:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2285 transitions. [2022-11-21 16:20:30,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7423651721897336 [2022-11-21 16:20:30,848 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2285 transitions. [2022-11-21 16:20:30,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2285 transitions. [2022-11-21 16:20:30,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:30,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2285 transitions. [2022-11-21 16:20:30,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 120.26315789473684) internal successors, (2285), 19 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:30,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 162.0) internal successors, (3240), 20 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:30,859 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 162.0) internal successors, (3240), 20 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:30,859 INFO L175 Difference]: Start difference. First operand has 261 places, 211 transitions, 1199 flow. Second operand 19 states and 2285 transitions. [2022-11-21 16:20:30,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 235 transitions, 1618 flow [2022-11-21 16:20:31,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 235 transitions, 1554 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-21 16:20:31,064 INFO L231 Difference]: Finished difference. Result has 263 places, 187 transitions, 1143 flow [2022-11-21 16:20:31,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1143, PETRI_PLACES=263, PETRI_TRANSITIONS=187} [2022-11-21 16:20:31,065 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 125 predicate places. [2022-11-21 16:20:31,065 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 187 transitions, 1143 flow [2022-11-21 16:20:31,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 120.04545454545455) internal successors, (2641), 22 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:31,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:31,066 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:20:31,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:31,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:31,273 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:20:31,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:31,274 INFO L85 PathProgramCache]: Analyzing trace with hash 422552089, now seen corresponding path program 3 times [2022-11-21 16:20:31,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:31,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729500241] [2022-11-21 16:20:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:31,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:35,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:35,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729500241] [2022-11-21 16:20:35,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729500241] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:35,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262593599] [2022-11-21 16:20:35,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:20:35,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:35,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:35,452 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:35,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 16:20:35,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-21 16:20:35,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:20:35,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 16:20:35,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:36,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:20:36,377 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 18 treesize of output 20 [2022-11-21 16:20:36,547 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 23 treesize of output 7 [2022-11-21 16:20:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 16:20:36,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:20:36,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262593599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:36,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:20:36,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [27] total 38 [2022-11-21 16:20:36,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695015770] [2022-11-21 16:20:36,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:36,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:20:36,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:36,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:20:36,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1380, Unknown=0, NotChecked=0, Total=1482 [2022-11-21 16:20:36,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 162 [2022-11-21 16:20:36,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 187 transitions, 1143 flow. Second operand has 13 states, 13 states have (on average 104.38461538461539) internal successors, (1357), 13 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:36,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:36,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 162 [2022-11-21 16:20:36,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:39,722 INFO L130 PetriNetUnfolder]: 3406/10146 cut-off events. [2022-11-21 16:20:39,722 INFO L131 PetriNetUnfolder]: For 127800/131420 co-relation queries the response was YES. [2022-11-21 16:20:39,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46009 conditions, 10146 events. 3406/10146 cut-off events. For 127800/131420 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 104457 event pairs, 1210 based on Foata normal form. 95/9201 useless extension candidates. Maximal degree in co-relation 44292. Up to 5622 conditions per place. [2022-11-21 16:20:39,803 INFO L137 encePairwiseOnDemand]: 148/162 looper letters, 81 selfloop transitions, 14 changer transitions 10/214 dead transitions. [2022-11-21 16:20:39,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 214 transitions, 1523 flow [2022-11-21 16:20:39,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:20:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:20:39,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1498 transitions. [2022-11-21 16:20:39,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6604938271604939 [2022-11-21 16:20:39,806 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1498 transitions. [2022-11-21 16:20:39,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1498 transitions. [2022-11-21 16:20:39,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:39,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1498 transitions. [2022-11-21 16:20:39,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.0) internal successors, (1498), 14 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:39,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 162.0) internal successors, (2430), 15 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:39,812 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 162.0) internal successors, (2430), 15 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:39,812 INFO L175 Difference]: Start difference. First operand has 263 places, 187 transitions, 1143 flow. Second operand 14 states and 1498 transitions. [2022-11-21 16:20:39,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 214 transitions, 1523 flow [2022-11-21 16:20:40,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 214 transitions, 1280 flow, removed 93 selfloop flow, removed 28 redundant places. [2022-11-21 16:20:40,246 INFO L231 Difference]: Finished difference. Result has 220 places, 187 transitions, 949 flow [2022-11-21 16:20:40,246 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=949, PETRI_PLACES=220, PETRI_TRANSITIONS=187} [2022-11-21 16:20:40,247 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 82 predicate places. [2022-11-21 16:20:40,247 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 187 transitions, 949 flow [2022-11-21 16:20:40,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 104.38461538461539) internal successors, (1357), 13 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:40,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:40,248 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:20:40,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:40,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:40,450 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:20:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:40,451 INFO L85 PathProgramCache]: Analyzing trace with hash -306722173, now seen corresponding path program 2 times [2022-11-21 16:20:40,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:40,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919765755] [2022-11-21 16:20:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:40,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:43,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:43,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919765755] [2022-11-21 16:20:43,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919765755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:43,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735480819] [2022-11-21 16:20:43,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:20:43,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:43,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:43,914 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:43,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 16:20:44,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:20:44,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:20:44,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 16:20:44,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:44,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:20:44,890 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 18 treesize of output 20 [2022-11-21 16:20:45,048 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 23 treesize of output 7 [2022-11-21 16:20:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 16:20:45,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:20:45,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735480819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:45,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:20:45,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [25] total 36 [2022-11-21 16:20:45,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055376117] [2022-11-21 16:20:45,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:45,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:20:45,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:45,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:20:45,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1242, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 16:20:45,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 162 [2022-11-21 16:20:45,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 187 transitions, 949 flow. Second operand has 13 states, 13 states have (on average 104.38461538461539) internal successors, (1357), 13 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:45,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:45,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 162 [2022-11-21 16:20:45,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:47,586 INFO L130 PetriNetUnfolder]: 3616/10551 cut-off events. [2022-11-21 16:20:47,587 INFO L131 PetriNetUnfolder]: For 40397/43807 co-relation queries the response was YES. [2022-11-21 16:20:47,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37322 conditions, 10551 events. 3616/10551 cut-off events. For 40397/43807 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 108328 event pairs, 890 based on Foata normal form. 835/10361 useless extension candidates. Maximal degree in co-relation 34341. Up to 3927 conditions per place. [2022-11-21 16:20:47,664 INFO L137 encePairwiseOnDemand]: 147/162 looper letters, 90 selfloop transitions, 22 changer transitions 0/221 dead transitions. [2022-11-21 16:20:47,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 221 transitions, 1435 flow [2022-11-21 16:20:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:20:47,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:20:47,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1502 transitions. [2022-11-21 16:20:47,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6622574955908289 [2022-11-21 16:20:47,667 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1502 transitions. [2022-11-21 16:20:47,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1502 transitions. [2022-11-21 16:20:47,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:47,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1502 transitions. [2022-11-21 16:20:47,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.28571428571429) internal successors, (1502), 14 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:47,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 162.0) internal successors, (2430), 15 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:47,673 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 162.0) internal successors, (2430), 15 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:47,673 INFO L175 Difference]: Start difference. First operand has 220 places, 187 transitions, 949 flow. Second operand 14 states and 1502 transitions. [2022-11-21 16:20:47,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 221 transitions, 1435 flow [2022-11-21 16:20:47,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 221 transitions, 1402 flow, removed 7 selfloop flow, removed 12 redundant places. [2022-11-21 16:20:47,952 INFO L231 Difference]: Finished difference. Result has 220 places, 188 transitions, 983 flow [2022-11-21 16:20:47,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=983, PETRI_PLACES=220, PETRI_TRANSITIONS=188} [2022-11-21 16:20:47,953 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 82 predicate places. [2022-11-21 16:20:47,953 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 188 transitions, 983 flow [2022-11-21 16:20:47,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 104.38461538461539) internal successors, (1357), 13 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:47,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:47,954 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:20:47,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:48,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 16:20:48,159 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:20:48,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:48,160 INFO L85 PathProgramCache]: Analyzing trace with hash -998960619, now seen corresponding path program 3 times [2022-11-21 16:20:48,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:48,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839096770] [2022-11-21 16:20:48,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:51,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:51,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839096770] [2022-11-21 16:20:51,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839096770] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:51,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123320352] [2022-11-21 16:20:51,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:20:51,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:51,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:51,241 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:51,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 16:20:51,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-21 16:20:51,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:20:51,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 16:20:51,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:51,666 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 23 treesize of output 7 [2022-11-21 16:20:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 16:20:51,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:20:51,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123320352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:51,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:20:51,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 30 [2022-11-21 16:20:51,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399831691] [2022-11-21 16:20:51,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:51,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:20:51,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:51,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:20:51,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2022-11-21 16:20:51,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-21 16:20:51,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 188 transitions, 983 flow. Second operand has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:51,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:51,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-21 16:20:51,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:20:53,916 INFO L130 PetriNetUnfolder]: 3941/11396 cut-off events. [2022-11-21 16:20:53,916 INFO L131 PetriNetUnfolder]: For 47526/50766 co-relation queries the response was YES. [2022-11-21 16:20:53,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40826 conditions, 11396 events. 3941/11396 cut-off events. For 47526/50766 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 119721 event pairs, 1470 based on Foata normal form. 310/10461 useless extension candidates. Maximal degree in co-relation 37837. Up to 6103 conditions per place. [2022-11-21 16:20:53,996 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 86 selfloop transitions, 8 changer transitions 0/215 dead transitions. [2022-11-21 16:20:53,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 215 transitions, 1388 flow [2022-11-21 16:20:53,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:20:53,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:20:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 750 transitions. [2022-11-21 16:20:53,997 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7716049382716049 [2022-11-21 16:20:53,997 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 750 transitions. [2022-11-21 16:20:53,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 750 transitions. [2022-11-21 16:20:53,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:20:53,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 750 transitions. [2022-11-21 16:20:53,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:53,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:54,000 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:54,000 INFO L175 Difference]: Start difference. First operand has 220 places, 188 transitions, 983 flow. Second operand 6 states and 750 transitions. [2022-11-21 16:20:54,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 215 transitions, 1388 flow [2022-11-21 16:20:54,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 215 transitions, 1353 flow, removed 3 selfloop flow, removed 12 redundant places. [2022-11-21 16:20:54,139 INFO L231 Difference]: Finished difference. Result has 214 places, 189 transitions, 984 flow [2022-11-21 16:20:54,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=984, PETRI_PLACES=214, PETRI_TRANSITIONS=189} [2022-11-21 16:20:54,140 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 76 predicate places. [2022-11-21 16:20:54,140 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 189 transitions, 984 flow [2022-11-21 16:20:54,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:54,141 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:20:54,141 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:20:54,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:54,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 16:20:54,346 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:20:54,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash 214213449, now seen corresponding path program 3 times [2022-11-21 16:20:54,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:54,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147838531] [2022-11-21 16:20:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:54,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:57,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:57,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147838531] [2022-11-21 16:20:57,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147838531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:57,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565063708] [2022-11-21 16:20:57,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:20:57,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:57,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:57,423 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:57,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 16:20:57,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-21 16:20:57,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:20:57,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 16:20:57,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:58,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:20:58,335 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 18 treesize of output 20 [2022-11-21 16:20:58,490 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 23 treesize of output 7 [2022-11-21 16:20:58,564 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 16:20:58,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:20:58,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565063708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:58,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:20:58,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [24] total 35 [2022-11-21 16:20:58,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555909105] [2022-11-21 16:20:58,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:58,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:20:58,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:58,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:20:58,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1176, Unknown=0, NotChecked=0, Total=1260 [2022-11-21 16:20:58,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 162 [2022-11-21 16:20:58,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 189 transitions, 984 flow. Second operand has 13 states, 13 states have (on average 104.46153846153847) internal successors, (1358), 13 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:20:58,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:20:58,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 162 [2022-11-21 16:20:58,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:01,228 INFO L130 PetriNetUnfolder]: 3846/10896 cut-off events. [2022-11-21 16:21:01,228 INFO L131 PetriNetUnfolder]: For 46431/49711 co-relation queries the response was YES. [2022-11-21 16:21:01,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39775 conditions, 10896 events. 3846/10896 cut-off events. For 46431/49711 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 113079 event pairs, 1355 based on Foata normal form. 125/9836 useless extension candidates. Maximal degree in co-relation 36747. Up to 6637 conditions per place. [2022-11-21 16:21:01,289 INFO L137 encePairwiseOnDemand]: 148/162 looper letters, 69 selfloop transitions, 11 changer transitions 20/209 dead transitions. [2022-11-21 16:21:01,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 209 transitions, 1286 flow [2022-11-21 16:21:01,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:21:01,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:21:01,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1496 transitions. [2022-11-21 16:21:01,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6596119929453262 [2022-11-21 16:21:01,291 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1496 transitions. [2022-11-21 16:21:01,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1496 transitions. [2022-11-21 16:21:01,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:01,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1496 transitions. [2022-11-21 16:21:01,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.85714285714286) internal successors, (1496), 14 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:01,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 162.0) internal successors, (2430), 15 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:01,294 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 162.0) internal successors, (2430), 15 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:01,294 INFO L175 Difference]: Start difference. First operand has 214 places, 189 transitions, 984 flow. Second operand 14 states and 1496 transitions. [2022-11-21 16:21:01,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 209 transitions, 1286 flow [2022-11-21 16:21:01,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 209 transitions, 1274 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-21 16:21:01,419 INFO L231 Difference]: Finished difference. Result has 225 places, 186 transitions, 961 flow [2022-11-21 16:21:01,420 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=961, PETRI_PLACES=225, PETRI_TRANSITIONS=186} [2022-11-21 16:21:01,420 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 87 predicate places. [2022-11-21 16:21:01,420 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 186 transitions, 961 flow [2022-11-21 16:21:01,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 104.46153846153847) internal successors, (1358), 13 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:01,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:01,420 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:01,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 16:21:01,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:01,621 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:21:01,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:01,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1171554197, now seen corresponding path program 1 times [2022-11-21 16:21:01,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:01,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633353483] [2022-11-21 16:21:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:01,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:21:05,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:05,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633353483] [2022-11-21 16:21:05,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633353483] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:21:05,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415112187] [2022-11-21 16:21:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:05,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:05,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:21:05,003 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:21:05,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 16:21:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:05,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-21 16:21:05,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:21:06,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:21:06,881 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 18 treesize of output 20 [2022-11-21 16:21:07,149 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 23 treesize of output 7 [2022-11-21 16:21:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:21:07,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:21:07,481 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_450 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_450) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) is different from false [2022-11-21 16:21:07,513 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:21:07,513 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 46 treesize of output 42 [2022-11-21 16:21:07,519 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 11 treesize of output 5 [2022-11-21 16:21:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:21:10,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415112187] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:21:10,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:21:10,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 20] total 63 [2022-11-21 16:21:10,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345909207] [2022-11-21 16:21:10,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:21:10,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-21 16:21:10,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:10,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-21 16:21:10,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=3664, Unknown=1, NotChecked=122, Total=4032 [2022-11-21 16:21:10,125 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-11-21 16:21:10,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 186 transitions, 961 flow. Second operand has 64 states, 64 states have (on average 81.421875) internal successors, (5211), 64 states have internal predecessors, (5211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:10,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:10,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-11-21 16:21:10,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:22,727 INFO L130 PetriNetUnfolder]: 4694/16237 cut-off events. [2022-11-21 16:21:22,727 INFO L131 PetriNetUnfolder]: For 61420/64732 co-relation queries the response was YES. [2022-11-21 16:21:22,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54386 conditions, 16237 events. 4694/16237 cut-off events. For 61420/64732 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 188188 event pairs, 793 based on Foata normal form. 878/16031 useless extension candidates. Maximal degree in co-relation 51860. Up to 2575 conditions per place. [2022-11-21 16:21:22,859 INFO L137 encePairwiseOnDemand]: 127/162 looper letters, 191 selfloop transitions, 114 changer transitions 0/375 dead transitions. [2022-11-21 16:21:22,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 375 transitions, 3056 flow [2022-11-21 16:21:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-21 16:21:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-21 16:21:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3770 transitions. [2022-11-21 16:21:22,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5171467764060357 [2022-11-21 16:21:22,868 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3770 transitions. [2022-11-21 16:21:22,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3770 transitions. [2022-11-21 16:21:22,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:22,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3770 transitions. [2022-11-21 16:21:22,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 83.77777777777777) internal successors, (3770), 45 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:22,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 162.0) internal successors, (7452), 46 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:22,891 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 162.0) internal successors, (7452), 46 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:22,891 INFO L175 Difference]: Start difference. First operand has 225 places, 186 transitions, 961 flow. Second operand 45 states and 3770 transitions. [2022-11-21 16:21:22,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 375 transitions, 3056 flow [2022-11-21 16:21:23,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 375 transitions, 3014 flow, removed 4 selfloop flow, removed 12 redundant places. [2022-11-21 16:21:23,121 INFO L231 Difference]: Finished difference. Result has 264 places, 257 transitions, 2109 flow [2022-11-21 16:21:23,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2109, PETRI_PLACES=264, PETRI_TRANSITIONS=257} [2022-11-21 16:21:23,122 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 126 predicate places. [2022-11-21 16:21:23,122 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 257 transitions, 2109 flow [2022-11-21 16:21:23,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 81.421875) internal successors, (5211), 64 states have internal predecessors, (5211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:23,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:23,123 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:23,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-21 16:21:23,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:23,323 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:21:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:23,324 INFO L85 PathProgramCache]: Analyzing trace with hash -702982041, now seen corresponding path program 2 times [2022-11-21 16:21:23,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:23,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592002401] [2022-11-21 16:21:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:23,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:21:27,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:27,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592002401] [2022-11-21 16:21:27,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592002401] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:21:27,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613073075] [2022-11-21 16:21:27,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:21:27,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:27,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:21:27,125 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:21:27,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-21 16:21:27,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:21:27,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:21:27,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:21:27,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:21:27,561 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 23 treesize of output 7 [2022-11-21 16:21:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 16:21:27,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:21:27,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613073075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:27,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:21:27,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 30 [2022-11-21 16:21:27,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245369714] [2022-11-21 16:21:27,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:27,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:21:27,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:27,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:21:27,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2022-11-21 16:21:27,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-21 16:21:27,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 257 transitions, 2109 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:27,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:27,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-21 16:21:27,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:30,761 INFO L130 PetriNetUnfolder]: 4992/14929 cut-off events. [2022-11-21 16:21:30,761 INFO L131 PetriNetUnfolder]: For 135615/145760 co-relation queries the response was YES. [2022-11-21 16:21:30,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65145 conditions, 14929 events. 4992/14929 cut-off events. For 135615/145760 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 165025 event pairs, 1493 based on Foata normal form. 892/14647 useless extension candidates. Maximal degree in co-relation 59144. Up to 7412 conditions per place. [2022-11-21 16:21:30,883 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 159 selfloop transitions, 15 changer transitions 0/299 dead transitions. [2022-11-21 16:21:30,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 299 transitions, 2957 flow [2022-11-21 16:21:30,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:21:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:21:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 751 transitions. [2022-11-21 16:21:30,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.772633744855967 [2022-11-21 16:21:30,885 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 751 transitions. [2022-11-21 16:21:30,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 751 transitions. [2022-11-21 16:21:30,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:30,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 751 transitions. [2022-11-21 16:21:30,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:30,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:30,887 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:30,887 INFO L175 Difference]: Start difference. First operand has 264 places, 257 transitions, 2109 flow. Second operand 6 states and 751 transitions. [2022-11-21 16:21:30,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 299 transitions, 2957 flow [2022-11-21 16:21:31,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 299 transitions, 2724 flow, removed 91 selfloop flow, removed 21 redundant places. [2022-11-21 16:21:31,437 INFO L231 Difference]: Finished difference. Result has 249 places, 260 transitions, 2011 flow [2022-11-21 16:21:31,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2011, PETRI_PLACES=249, PETRI_TRANSITIONS=260} [2022-11-21 16:21:31,438 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 111 predicate places. [2022-11-21 16:21:31,438 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 260 transitions, 2011 flow [2022-11-21 16:21:31,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:31,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:31,438 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:31,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-21 16:21:31,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:31,639 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:21:31,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:31,639 INFO L85 PathProgramCache]: Analyzing trace with hash 686275698, now seen corresponding path program 1 times [2022-11-21 16:21:31,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:31,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215519089] [2022-11-21 16:21:31,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:31,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 16:21:31,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:31,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215519089] [2022-11-21 16:21:31,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215519089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:21:31,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577086722] [2022-11-21 16:21:31,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:31,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:31,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:21:31,747 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:21:31,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-21 16:21:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:31,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:21:31,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:21:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 16:21:32,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:21:32,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577086722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:32,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:21:32,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:21:32,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775795366] [2022-11-21 16:21:32,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:32,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:21:32,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:32,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:21:32,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:21:32,026 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 162 [2022-11-21 16:21:32,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 260 transitions, 2011 flow. Second operand has 6 states, 6 states have (on average 132.33333333333334) internal successors, (794), 6 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:32,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:32,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 162 [2022-11-21 16:21:32,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:34,718 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([520] L49-8-->L61: Formula: (and (not (= (ite (and (<= 0 v_~q_back~0_93) (< v_~q_back~0_93 v_~n~0_53)) 1 0) 0)) (<= 0 (+ v_~q_back~0_92 2147483648)) (not (= |v_thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1_5| 0)) (= (+ v_~q_back~0_93 1) v_~q_back~0_92) (<= v_~q_back~0_92 2147483647) (= |v_thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_5| (ite (= (select (select |v_#memory_int_64| v_~q~0.base_56) (+ v_~q~0.offset_56 (* v_~q_back~0_93 4))) 0) 1 0)) (= |v_thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_5| |v_thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1_5|)) InVars {#memory_int=|v_#memory_int_64|, ~q_back~0=v_~q_back~0_93, ~q~0.base=v_~q~0.base_56, ~n~0=v_~n~0_53, ~q~0.offset=v_~q~0.offset_56} OutVars{thread1Thread1of1ForFork1_#t~mem4#1=|v_thread1Thread1of1ForFork1_#t~mem4#1_5|, ~q_back~0=v_~q_back~0_92, thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_5|, thread1Thread1of1ForFork1_#t~post5#1=|v_thread1Thread1of1ForFork1_#t~post5#1_5|, #memory_int=|v_#memory_int_64|, ~q~0.base=v_~q~0.base_56, ~n~0=v_~n~0_53, ~q~0.offset=v_~q~0.offset_56, thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1_5|} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~mem4#1, ~q_back~0, thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread1Thread1of1ForFork1_#t~post5#1, thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1][261], [8492#(<= 1 |thread1Thread1of1ForFork1_~i~0#1|), Black: 5900#(and (<= ~q_back~0 ~q_front~0) (or (< ~n~0 (+ 2 ~q_front~0)) (not (<= 0 ~q_back~0)) (< 1 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n~0 (+ 2 ~q_front~0)) (not (<= 0 ~q_back~0)))), Black: 5896#(and (or (< ~n~0 (+ 2 ~q_front~0)) (not (<= 0 ~q_back~0)) (< 1 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)) (or (not (<= 0 ~q_back~0)) (< 0 (+ ~q_front~0 1))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n~0 (+ 2 ~q_front~0)) (not (<= 0 ~q_back~0))) (<= ~q_back~0 (+ ~q_front~0 1))), 3536#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|)), thread2Thread1of1ForFork0InUse, 4279#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (<= ~q_front~0 ~q_back~0) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0))), 8047#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|)), Black: 8482#(and (<= 0 ~s~0) (<= 1 |thread2Thread1of1ForFork0_~j~0#1|)), 8143#true, Black: 4281#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (<= 0 (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0 2147483648)) (<= ~q_front~0 ~q_back~0) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0))), Black: 1801#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~nondet21#1| 2147483647) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |ULTIMATE.start_create_fresh_int_array_~i~1#1| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 4257#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~q_back~0)) (not (= ~q~0.base |ULTIMATE.start_main_~#t1~0#1.base|)) (or (and (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (<= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base|))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (<= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base|)))) (not (< ~q_back~0 ~n~0))) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (not (= |ULTIMATE.start_create_fresh_int_array_#res#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (or (forall ((v_ArrVal_226 (Array Int Int)) (v_ArrVal_225 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_225) |ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_226) |ULTIMATE.start_main_#t~ret12#1.base|) (+ |ULTIMATE.start_main_#t~ret12#1.offset| (* ~q_front~0 4)))))) (not (< ~q_back~0 ~n~0))) (<= ~q_front~0 ~q_back~0) (<= (+ ~n~0 ~q_front~0) (+ ~q_back~0 1)) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= ~q_front~0 0) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (or (and (< 0 (+ 2147483649 |ULTIMATE.start_create_fresh_int_array_#t~nondet21#1|)) (= (* |ULTIMATE.start_create_fresh_int_array_~i~1#1| 4) (* ~q_front~0 4))) (< (+ |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1) |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (< ~q_back~0 ~n~0))) (= ~q~0.offset 0) (not (= |ULTIMATE.start_create_fresh_int_array_#res#1.base| |ULTIMATE.start_main_~#t2~0#1.base|)) (<= 0 ~q_front~0) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|)) (forall ((v_ArrVal_226 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |#memory_int| |ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_226) ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4)))))) (<= 0 (+ (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_#res#1.base|) 0) 2147483648)) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~i~1#1| ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_~size#1| ~q_back~0 1)) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|) (<= 0 (+ (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 0) 2147483648))), Black: 1809#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647))) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 0) 2147483647) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 1835#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (or (not (<= 0 ~q_back~0)) (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))))) (or (< |ULTIMATE.start_create_fresh_int_array_~i~1#1| |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (<= 0 ~q_back~0)) (forall ((v_ArrVal_126 (Array Int Int)) (v_ArrVal_125 (Array Int Int))) (< (select (select (store (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_125) |ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_126) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (* ~q_front~0 4))) 2147483648)) (not (< ~q_back~0 ~n~0)))), Black: 1795#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 8112#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (or (= (* ~q_back~0 4) (* ~q_front~0 4)) (not (<= 0 ~q_back~0)) (< 1 ~q_back~0))), Black: 1797#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 1837#(and (<= |thread2Thread1of1ForFork0_~j~0#1| 2147483647) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (or (not (<= 0 ~q_back~0)) (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))))) (or (< |ULTIMATE.start_create_fresh_int_array_~i~1#1| |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (<= 0 ~q_back~0)) (forall ((v_ArrVal_126 (Array Int Int)) (v_ArrVal_125 (Array Int Int))) (< (select (select (store (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_125) |ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_126) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (* ~q_front~0 4))) 2147483648)) (not (< ~q_back~0 ~n~0))) (= ~s~0 0)), Black: 8114#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (<= 1 |thread2Thread1of1ForFork0_~j~0#1|) (or (= (* ~q_back~0 4) (* ~q_front~0 4)) (not (<= 0 ~q_back~0)) (< 1 ~q_back~0)) (= ~s~0 0)), Black: 8118#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (<= 1 |thread2Thread1of1ForFork0_~j~0#1|) (= ~s~0 0)), Black: 8101#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 1) (= ~q~0.offset 0) (<= 0 ~q_front~0) (<= ~q_front~0 1)), Black: 8104#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 1) (= ~q~0.offset 0) (<= 0 ~q_front~0) (<= ~q_front~0 1) (= ~s~0 0)), Black: 8122#(and (<= 0 ~s~0) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (<= 1 |thread2Thread1of1ForFork0_~j~0#1|) (or (= (* ~q_back~0 4) (* ~q_front~0 4)) (not (<= 0 ~q_back~0)) (< 1 ~q_back~0))), Black: 1849#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647) (or (not (<= 0 ~q_back~0)) (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1)))))), Black: 6983#(and (<= ~s~0 0) (= |thread2Thread1of1ForFork0_~j~0#1| 1)), Black: 8079#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 2) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (or (not (<= ~q_back~0 0)) (and (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (<= 0 (+ (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 0) 2147483648)))) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 8116#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (< 0 (+ (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483649))), Black: 8108#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (< 0 (+ (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483649)) (forall ((v_ArrVal_450 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |#memory_int| |ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_450) ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))))))), 5221#(and (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| 2147483647) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| 2147483647) (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 2) (<= ~n~0 2147483647)), Black: 8120#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (<= 0 (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0 2147483648)) (or (= (* ~q_back~0 4) (* ~q_front~0 4)) (not (<= 0 ~q_back~0)) (< 1 ~q_back~0))), Black: 8126#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (<= 0 (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0 2147483648))), Black: 8124#(and (<= 0 ~s~0) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (<= 1 |thread2Thread1of1ForFork0_~j~0#1|)), 5898#(and (or (< ~n~0 (+ 2 ~q_front~0)) (not (<= 0 ~q_back~0)) (< 1 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (not (< ~q_back~0 ~n~0))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n~0 (+ 2 ~q_front~0)) (not (<= 0 ~q_back~0)) (not (< ~q_back~0 ~n~0))) (or (not (<= 0 ~q_back~0)) (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1)))), 98#L70-3true, 22#L101-1true, 1847#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (or (not (<= 0 ~q_back~0)) (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1)))))), 23#L61true, Black: 865#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0)), Black: 171#true, Black: 2861#(and (or (not (<= 0 ~q_back~0)) (forall ((v_ArrVal_178 (Array Int Int))) (< (select (select (store |#memory_int| |ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_178) ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483648)) (not (< ~q_back~0 ~n~0))) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (or (not (<= 0 ~q_back~0)) (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))))) (or (forall ((v_ArrVal_177 (Array Int Int)) (v_ArrVal_178 (Array Int Int))) (< (select (select (store (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_177) |ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_178) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| (* ~q_front~0 4))) 2147483648)) (not (<= 0 ~q_back~0)) (< (+ |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1) |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (< ~q_back~0 ~n~0))) (or (not (<= 0 ~q_back~0)) (not (< ~q_back~0 ~n~0)) (and (or (< 0 (+ ~q_front~0 1)) (< 1 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)) (or (< ~q_front~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (< 1 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)))) (or (not (<= 0 ~q_back~0)) (and (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (<= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base|))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (<= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base|))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< 0 (+ ~q_front~0 1))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~q_front~0 |ULTIMATE.start_create_fresh_int_array_~size#1|))) (not (< ~q_back~0 ~n~0))) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|) (or (not (<= 0 ~q_back~0)) (and (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (< ~q_back~0 ~n~0)))), Black: 6641#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 1)), Black: 1138#(and (= |thread1Thread1of1ForFork1_#t~post1#1| 0) (= |thread1Thread1of1ForFork1_~i~0#1| 0)), Black: 1135#(= |thread1Thread1of1ForFork1_~i~0#1| 0), 2879#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (or (not (<= 0 ~q_back~0)) (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))))) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|)), Black: 1136#(= |thread1Thread1of1ForFork1_#t~post1#1| 0), Black: 3571#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= |thread1Thread1of1ForFork1_~i~0#1| 1) (<= |thread1Thread1of1ForFork1_#t~post1#1| 1)), Black: 3573#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= |thread1Thread1of1ForFork1_#t~post1#1| 1)), Black: 3569#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= |thread1Thread1of1ForFork1_~i~0#1| 1)), Black: 2911#(and (or (< (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483648) (not (<= 0 ~q_back~0)) (not (< ~q_back~0 ~n~0))) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (or (not (<= 0 ~q_back~0)) (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))))) (or (not (<= 0 ~q_back~0)) (not (< ~q_back~0 ~n~0)) (and (or (< 0 (+ ~q_front~0 1)) (< 1 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)) (or (< ~q_front~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (< 1 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)))) (or (< (+ (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) ~s~0) 2147483648) (not (<= 0 ~q_back~0)) (not (< ~q_back~0 ~n~0))) (or (not (<= 0 ~q_back~0)) (and (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (<= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base|))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (<= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_create_fresh_int_array_#t~malloc19#1.base|))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< 0 (+ ~q_front~0 1))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~q_front~0 |ULTIMATE.start_create_fresh_int_array_~size#1|))) (not (< ~q_back~0 ~n~0))) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|) (or (not (<= 0 ~q_back~0)) (and (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (< ~q_back~0 ~n~0)))), Black: 1145#(<= ~q_back~0 ~q_front~0), Black: 5207#(and (<= |ULTIMATE.start_create_fresh_int_array_#in~size#1| 2147483647) (<= |ULTIMATE.start_create_fresh_int_array_~size#1| 2147483647) (<= ~n~0 2147483647))]) [2022-11-21 16:21:34,719 INFO L383 tUnfolder$Statistics]: this new event has 150 ancestors and is cut-off event [2022-11-21 16:21:34,719 INFO L386 tUnfolder$Statistics]: existing Event has 150 ancestors and is cut-off event [2022-11-21 16:21:34,720 INFO L386 tUnfolder$Statistics]: existing Event has 142 ancestors and is cut-off event [2022-11-21 16:21:34,720 INFO L386 tUnfolder$Statistics]: existing Event has 142 ancestors and is cut-off event [2022-11-21 16:21:35,519 INFO L130 PetriNetUnfolder]: 3715/14590 cut-off events. [2022-11-21 16:21:35,519 INFO L131 PetriNetUnfolder]: For 138123/140371 co-relation queries the response was YES. [2022-11-21 16:21:35,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63250 conditions, 14590 events. 3715/14590 cut-off events. For 138123/140371 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 170105 event pairs, 668 based on Foata normal form. 789/14294 useless extension candidates. Maximal degree in co-relation 59932. Up to 4292 conditions per place. [2022-11-21 16:21:35,637 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 140 selfloop transitions, 8 changer transitions 0/309 dead transitions. [2022-11-21 16:21:35,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 309 transitions, 3084 flow [2022-11-21 16:21:35,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:21:35,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:21:35,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 943 transitions. [2022-11-21 16:21:35,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8315696649029982 [2022-11-21 16:21:35,639 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 943 transitions. [2022-11-21 16:21:35,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 943 transitions. [2022-11-21 16:21:35,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:35,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 943 transitions. [2022-11-21 16:21:35,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:35,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:35,641 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:35,641 INFO L175 Difference]: Start difference. First operand has 249 places, 260 transitions, 2011 flow. Second operand 7 states and 943 transitions. [2022-11-21 16:21:35,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 309 transitions, 3084 flow [2022-11-21 16:21:36,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 309 transitions, 3036 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 16:21:36,188 INFO L231 Difference]: Finished difference. Result has 249 places, 258 transitions, 1979 flow [2022-11-21 16:21:36,188 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1979, PETRI_PLACES=249, PETRI_TRANSITIONS=258} [2022-11-21 16:21:36,188 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 111 predicate places. [2022-11-21 16:21:36,188 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 258 transitions, 1979 flow [2022-11-21 16:21:36,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.33333333333334) internal successors, (794), 6 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:36,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:36,189 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:36,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-21 16:21:36,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:36,390 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:21:36,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:36,390 INFO L85 PathProgramCache]: Analyzing trace with hash 743723125, now seen corresponding path program 2 times [2022-11-21 16:21:36,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:36,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133593152] [2022-11-21 16:21:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:36,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:21:36,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:36,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133593152] [2022-11-21 16:21:36,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133593152] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:21:36,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277858308] [2022-11-21 16:21:36,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:21:36,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:36,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:21:36,691 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:21:36,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-21 16:21:36,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:21:36,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:21:36,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:21:36,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:21:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 16:21:37,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:21:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 16:21:37,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277858308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:21:37,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:21:37,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 16 [2022-11-21 16:21:37,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458541351] [2022-11-21 16:21:37,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:21:37,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:21:37,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:37,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:21:37,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:21:37,457 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 162 [2022-11-21 16:21:37,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 258 transitions, 1979 flow. Second operand has 16 states, 16 states have (on average 107.375) internal successors, (1718), 16 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:37,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:21:37,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 162 [2022-11-21 16:21:37,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:21:41,685 INFO L130 PetriNetUnfolder]: 3269/13053 cut-off events. [2022-11-21 16:21:41,686 INFO L131 PetriNetUnfolder]: For 124348/126566 co-relation queries the response was YES. [2022-11-21 16:21:41,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56694 conditions, 13053 events. 3269/13053 cut-off events. For 124348/126566 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 148297 event pairs, 557 based on Foata normal form. 800/12950 useless extension candidates. Maximal degree in co-relation 54474. Up to 2284 conditions per place. [2022-11-21 16:21:41,805 INFO L137 encePairwiseOnDemand]: 142/162 looper letters, 218 selfloop transitions, 54 changer transitions 0/386 dead transitions. [2022-11-21 16:21:41,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 386 transitions, 4095 flow [2022-11-21 16:21:41,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 16:21:41,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-21 16:21:41,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2968 transitions. [2022-11-21 16:21:41,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.654320987654321 [2022-11-21 16:21:41,810 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2968 transitions. [2022-11-21 16:21:41,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2968 transitions. [2022-11-21 16:21:41,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:21:41,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2968 transitions. [2022-11-21 16:21:41,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 106.0) internal successors, (2968), 28 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:41,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 162.0) internal successors, (4698), 29 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:41,821 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 162.0) internal successors, (4698), 29 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:41,822 INFO L175 Difference]: Start difference. First operand has 249 places, 258 transitions, 1979 flow. Second operand 28 states and 2968 transitions. [2022-11-21 16:21:41,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 386 transitions, 4095 flow [2022-11-21 16:21:42,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 386 transitions, 4045 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-11-21 16:21:42,333 INFO L231 Difference]: Finished difference. Result has 273 places, 267 transitions, 2199 flow [2022-11-21 16:21:42,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2199, PETRI_PLACES=273, PETRI_TRANSITIONS=267} [2022-11-21 16:21:42,334 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 135 predicate places. [2022-11-21 16:21:42,334 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 267 transitions, 2199 flow [2022-11-21 16:21:42,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 107.375) internal successors, (1718), 16 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:21:42,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:21:42,335 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:42,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-21 16:21:42,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-21 16:21:42,541 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:21:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:42,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2035589541, now seen corresponding path program 1 times [2022-11-21 16:21:42,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:42,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630894215] [2022-11-21 16:21:42,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:42,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:21:44,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:44,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630894215] [2022-11-21 16:21:44,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630894215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:21:44,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613946371] [2022-11-21 16:21:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:44,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:21:44,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:21:44,647 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:21:44,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-21 16:21:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:44,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-21 16:21:44,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:21:44,836 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 [2022-11-21 16:21:45,407 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:21:45,407 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 11 treesize of output 11 [2022-11-21 16:21:45,783 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 [2022-11-21 16:21:46,231 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 28 treesize of output 27 [2022-11-21 16:21:51,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:21:51,465 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 19 treesize of output 21 [2022-11-21 16:21:51,686 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 19 treesize of output 21 [2022-11-21 16:21:53,054 INFO L321 Elim1Store]: treesize reduction 24, result has 11.1 percent of original size [2022-11-21 16:21:53,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 16 [2022-11-21 16:21:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:21:53,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:21:56,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:21:56,795 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 2 case distinctions, treesize of input 114 treesize of output 79 [2022-11-21 16:21:56,844 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:21:56,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 226 [2022-11-21 16:21:56,873 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:21:56,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 142 [2022-11-21 16:21:56,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:21:56,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 97 [2022-11-21 16:22:02,238 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 10 treesize of output 8 [2022-11-21 16:22:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:22:02,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613946371] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:22:02,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:22:02,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 28] total 75 [2022-11-21 16:22:02,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495812500] [2022-11-21 16:22:02,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:22:02,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-11-21 16:22:02,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:22:02,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-11-21 16:22:02,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=5260, Unknown=16, NotChecked=0, Total=5700 [2022-11-21 16:22:02,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-11-21 16:22:02,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 267 transitions, 2199 flow. Second operand has 76 states, 76 states have (on average 81.25) internal successors, (6175), 76 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:22:02,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:22:02,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-11-21 16:22:02,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:22:23,349 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 260 DAG size of output: 226 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:22:57,048 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 291 DAG size of output: 213 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:23:38,308 WARN L233 SmtUtils]: Spent 9.50s on a formula simplification. DAG size of input: 283 DAG size of output: 249 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:23:50,644 WARN L233 SmtUtils]: Spent 8.38s on a formula simplification. DAG size of input: 273 DAG size of output: 239 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:24:06,798 INFO L130 PetriNetUnfolder]: 5037/15524 cut-off events. [2022-11-21 16:24:06,798 INFO L131 PetriNetUnfolder]: For 143503/152481 co-relation queries the response was YES. [2022-11-21 16:24:06,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67959 conditions, 15524 events. 5037/15524 cut-off events. For 143503/152481 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 173356 event pairs, 585 based on Foata normal form. 2086/17108 useless extension candidates. Maximal degree in co-relation 63780. Up to 4370 conditions per place. [2022-11-21 16:24:06,964 INFO L137 encePairwiseOnDemand]: 124/162 looper letters, 349 selfloop transitions, 195 changer transitions 41/663 dead transitions. [2022-11-21 16:24:06,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 663 transitions, 6709 flow [2022-11-21 16:24:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-11-21 16:24:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2022-11-21 16:24:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 8777 transitions. [2022-11-21 16:24:06,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5159905937683715 [2022-11-21 16:24:06,975 INFO L72 ComplementDD]: Start complementDD. Operand 105 states and 8777 transitions. [2022-11-21 16:24:06,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 8777 transitions. [2022-11-21 16:24:06,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:24:06,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 105 states and 8777 transitions. [2022-11-21 16:24:06,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 106 states, 105 states have (on average 83.5904761904762) internal successors, (8777), 105 states have internal predecessors, (8777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:24:07,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 106 states, 106 states have (on average 162.0) internal successors, (17172), 106 states have internal predecessors, (17172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:24:07,010 INFO L81 ComplementDD]: Finished complementDD. Result has 106 states, 106 states have (on average 162.0) internal successors, (17172), 106 states have internal predecessors, (17172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:24:07,011 INFO L175 Difference]: Start difference. First operand has 273 places, 267 transitions, 2199 flow. Second operand 105 states and 8777 transitions. [2022-11-21 16:24:07,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 663 transitions, 6709 flow [2022-11-21 16:24:07,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 663 transitions, 6668 flow, removed 0 selfloop flow, removed 15 redundant places. [2022-11-21 16:24:07,654 INFO L231 Difference]: Finished difference. Result has 384 places, 383 transitions, 4310 flow [2022-11-21 16:24:07,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=105, PETRI_FLOW=4310, PETRI_PLACES=384, PETRI_TRANSITIONS=383} [2022-11-21 16:24:07,655 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 246 predicate places. [2022-11-21 16:24:07,655 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 383 transitions, 4310 flow [2022-11-21 16:24:07,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 81.25) internal successors, (6175), 76 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:24:07,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:24:07,656 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:24:07,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-21 16:24:07,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:24:07,856 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-21 16:24:07,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:24:07,857 INFO L85 PathProgramCache]: Analyzing trace with hash -223024735, now seen corresponding path program 2 times [2022-11-21 16:24:07,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:24:07,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514139873] [2022-11-21 16:24:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:24:07,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:24:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:24:09,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:24:09,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514139873] [2022-11-21 16:24:09,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514139873] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:24:09,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009693048] [2022-11-21 16:24:09,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:24:09,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:24:09,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:24:09,647 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:24:09,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b70d562a-cc78-4f81-8f94-0f654ab3c231/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-21 16:24:09,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:24:09,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:24:09,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-21 16:24:09,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:24:10,907 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 [2022-11-21 16:24:11,627 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 6 treesize of output 5 [2022-11-21 16:24:11,778 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 6 treesize of output 5 [2022-11-21 16:24:12,548 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 23 treesize of output 7 [2022-11-21 16:24:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:24:12,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:24:14,792 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:24:14,792 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 1 case distinctions, treesize of input 62 treesize of output 50 [2022-11-21 16:24:14,819 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-21 16:24:14,820 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 316 treesize of output 287 [2022-11-21 16:24:14,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:24:14,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 185 [2022-11-21 16:24:14,856 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-21 16:24:14,856 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 252 treesize of output 196 [2022-11-21 16:24:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:24:15,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009693048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:24:15,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:24:15,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 22] total 67 [2022-11-21 16:24:15,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528978624] [2022-11-21 16:24:15,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:24:15,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-11-21 16:24:15,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:24:15,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-11-21 16:24:15,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=623, Invalid=3906, Unknown=27, NotChecked=0, Total=4556 [2022-11-21 16:24:15,980 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 162 [2022-11-21 16:24:15,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 383 transitions, 4310 flow. Second operand has 68 states, 68 states have (on average 86.23529411764706) internal successors, (5864), 68 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:24:15,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:24:15,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 162 [2022-11-21 16:24:15,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand