./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:45:12,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:45:12,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:45:12,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:45:12,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:45:12,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:45:12,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:45:12,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:45:12,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:45:12,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:45:12,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:45:12,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:45:12,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:45:12,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:45:12,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:45:12,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:45:12,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:45:12,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:45:12,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:45:12,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:45:12,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:45:12,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:45:12,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:45:12,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:45:12,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:45:12,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:45:12,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:45:12,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:45:12,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:45:12,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:45:12,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:45:12,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:45:12,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:45:12,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:45:12,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:45:12,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:45:12,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:45:12,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:45:12,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:45:12,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:45:12,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:45:12,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:45:12,379 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:45:12,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:45:12,380 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:45:12,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:45:12,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:45:12,382 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:45:12,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:45:12,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:45:12,383 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:45:12,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:45:12,385 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:45:12,386 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:45:12,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:45:12,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:45:12,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:45:12,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:45:12,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:45:12,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:45:12,388 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:45:12,388 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:45:12,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:45:12,389 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:45:12,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:45:12,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:45:12,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:45:12,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:45:12,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:45:12,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:45:12,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:45:12,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:45:12,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:45:12,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:45:12,392 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:45:12,393 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:45:12,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:45:12,393 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_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2022-11-20 11:45:12,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:45:12,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:45:12,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:45:12,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:45:12,751 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:45:12,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-20 11:45:16,186 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:45:16,430 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:45:16,431 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-20 11:45:16,447 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/data/7f4d679e9/6414a99df09a42d6892678377ef406a5/FLAG54419bfa4 [2022-11-20 11:45:16,464 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/data/7f4d679e9/6414a99df09a42d6892678377ef406a5 [2022-11-20 11:45:16,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:45:16,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:45:16,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:45:16,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:45:16,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:45:16,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:45:16" (1/1) ... [2022-11-20 11:45:16,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff31d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:16, skipping insertion in model container [2022-11-20 11:45:16,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:45:16" (1/1) ... [2022-11-20 11:45:16,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:45:16,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:45:16,963 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_44e615d2-e20b-4d41-98d6-88d9ed5fa891/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-20 11:45:16,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:45:16,975 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:45:17,023 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_44e615d2-e20b-4d41-98d6-88d9ed5fa891/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-20 11:45:17,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:45:17,076 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:45:17,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:17 WrapperNode [2022-11-20 11:45:17,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:45:17,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:45:17,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:45:17,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:45:17,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:17" (1/1) ... [2022-11-20 11:45:17,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:17" (1/1) ... [2022-11-20 11:45:17,143 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-20 11:45:17,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:45:17,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:45:17,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:45:17,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:45:17,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:17" (1/1) ... [2022-11-20 11:45:17,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:17" (1/1) ... [2022-11-20 11:45:17,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:17" (1/1) ... [2022-11-20 11:45:17,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:17" (1/1) ... [2022-11-20 11:45:17,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:17" (1/1) ... [2022-11-20 11:45:17,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:17" (1/1) ... [2022-11-20 11:45:17,191 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:17" (1/1) ... [2022-11-20 11:45:17,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:17" (1/1) ... [2022-11-20 11:45:17,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:45:17,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:45:17,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:45:17,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:45:17,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:17" (1/1) ... [2022-11-20 11:45:17,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:45:17,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:45:17,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:45:17,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:45:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 11:45:17,284 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 11:45:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 11:45:17,285 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 11:45:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:45:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:45:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:45:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:45:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:45:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:45:17,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:45:17,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:45:17,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:45:17,288 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:45:17,424 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:45:17,426 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:45:17,680 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:45:17,721 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:45:17,725 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:45:17,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:45:17 BoogieIcfgContainer [2022-11-20 11:45:17,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:45:17,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:45:17,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:45:17,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:45:17,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:45:16" (1/3) ... [2022-11-20 11:45:17,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b6f5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:45:17, skipping insertion in model container [2022-11-20 11:45:17,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:45:17" (2/3) ... [2022-11-20 11:45:17,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b6f5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:45:17, skipping insertion in model container [2022-11-20 11:45:17,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:45:17" (3/3) ... [2022-11-20 11:45:17,737 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2022-11-20 11:45:17,744 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:45:17,753 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:45:17,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 11:45:17,754 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:45:17,818 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:45:17,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 81 transitions, 172 flow [2022-11-20 11:45:17,900 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2022-11-20 11:45:17,900 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:45:17,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 79 events. 5/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-11-20 11:45:17,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 81 transitions, 172 flow [2022-11-20 11:45:17,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 164 flow [2022-11-20 11:45:17,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:45:17,930 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;@5cd6762e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:45:17,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-20 11:45:17,945 INFO L130 PetriNetUnfolder]: 1/33 cut-off events. [2022-11-20 11:45:17,946 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:45:17,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:17,947 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] [2022-11-20 11:45:17,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:17,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1934517197, now seen corresponding path program 1 times [2022-11-20 11:45:17,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:17,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421408814] [2022-11-20 11:45:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:17,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:18,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:18,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:18,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421408814] [2022-11-20 11:45:18,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421408814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:18,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:18,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:45:18,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051506067] [2022-11-20 11:45:18,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:18,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:45:18,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:18,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:45:18,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:45:18,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-20 11:45:18,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:18,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:18,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-20 11:45:18,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:18,560 INFO L130 PetriNetUnfolder]: 61/298 cut-off events. [2022-11-20 11:45:18,561 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 11:45:18,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 298 events. 61/298 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1487 event pairs, 14 based on Foata normal form. 45/261 useless extension candidates. Maximal degree in co-relation 373. Up to 49 conditions per place. [2022-11-20 11:45:18,568 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 11 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2022-11-20 11:45:18,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 194 flow [2022-11-20 11:45:18,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:45:18,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:45:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2022-11-20 11:45:18,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2022-11-20 11:45:18,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2022-11-20 11:45:18,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2022-11-20 11:45:18,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:18,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2022-11-20 11:45:18,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:18,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:18,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:18,602 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 164 flow. Second operand 3 states and 225 transitions. [2022-11-20 11:45:18,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 194 flow [2022-11-20 11:45:18,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:45:18,611 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 176 flow [2022-11-20 11:45:18,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2022-11-20 11:45:18,617 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2022-11-20 11:45:18,618 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 176 flow [2022-11-20 11:45:18,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:18,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:18,619 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] [2022-11-20 11:45:18,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:45:18,620 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:18,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:18,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1934517196, now seen corresponding path program 1 times [2022-11-20 11:45:18,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:18,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013112513] [2022-11-20 11:45:18,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:18,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:18,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013112513] [2022-11-20 11:45:18,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013112513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:18,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:18,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:45:18,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894369881] [2022-11-20 11:45:18,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:18,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:45:18,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:18,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:45:18,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:45:18,774 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-20 11:45:18,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:18,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:18,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-20 11:45:18,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:18,929 INFO L130 PetriNetUnfolder]: 51/313 cut-off events. [2022-11-20 11:45:18,929 INFO L131 PetriNetUnfolder]: For 64/78 co-relation queries the response was YES. [2022-11-20 11:45:18,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 313 events. 51/313 cut-off events. For 64/78 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1515 event pairs, 10 based on Foata normal form. 15/282 useless extension candidates. Maximal degree in co-relation 423. Up to 53 conditions per place. [2022-11-20 11:45:18,937 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 11 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2022-11-20 11:45:18,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 218 flow [2022-11-20 11:45:18,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:45:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:45:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2022-11-20 11:45:18,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.897119341563786 [2022-11-20 11:45:18,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2022-11-20 11:45:18,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2022-11-20 11:45:18,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:18,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2022-11-20 11:45:18,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:18,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:18,954 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:18,955 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 176 flow. Second operand 3 states and 218 transitions. [2022-11-20 11:45:18,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 218 flow [2022-11-20 11:45:18,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:45:18,959 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 190 flow [2022-11-20 11:45:18,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2022-11-20 11:45:18,961 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2022-11-20 11:45:18,961 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 190 flow [2022-11-20 11:45:18,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:18,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:18,963 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] [2022-11-20 11:45:18,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:45:18,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:18,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:18,965 INFO L85 PathProgramCache]: Analyzing trace with hash 649821270, now seen corresponding path program 1 times [2022-11-20 11:45:18,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:18,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374393314] [2022-11-20 11:45:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:18,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:19,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:19,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374393314] [2022-11-20 11:45:19,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374393314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:19,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:19,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:45:19,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455291420] [2022-11-20 11:45:19,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:19,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:45:19,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:19,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:45:19,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:45:19,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-20 11:45:19,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:19,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-20 11:45:19,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:19,327 INFO L130 PetriNetUnfolder]: 97/367 cut-off events. [2022-11-20 11:45:19,328 INFO L131 PetriNetUnfolder]: For 155/227 co-relation queries the response was YES. [2022-11-20 11:45:19,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 367 events. 97/367 cut-off events. For 155/227 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1995 event pairs, 37 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 698. Up to 121 conditions per place. [2022-11-20 11:45:19,335 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 37 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2022-11-20 11:45:19,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 100 transitions, 360 flow [2022-11-20 11:45:19,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:45:19,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:45:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 341 transitions. [2022-11-20 11:45:19,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8419753086419753 [2022-11-20 11:45:19,338 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 341 transitions. [2022-11-20 11:45:19,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 341 transitions. [2022-11-20 11:45:19,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:19,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 341 transitions. [2022-11-20 11:45:19,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.2) internal successors, (341), 5 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,345 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,345 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 190 flow. Second operand 5 states and 341 transitions. [2022-11-20 11:45:19,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 100 transitions, 360 flow [2022-11-20 11:45:19,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 100 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:45:19,351 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 218 flow [2022-11-20 11:45:19,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2022-11-20 11:45:19,354 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2022-11-20 11:45:19,354 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 218 flow [2022-11-20 11:45:19,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:19,355 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] [2022-11-20 11:45:19,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:45:19,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:19,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:19,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1215262810, now seen corresponding path program 1 times [2022-11-20 11:45:19,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:19,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055072321] [2022-11-20 11:45:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:19,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:19,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:19,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:19,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055072321] [2022-11-20 11:45:19,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055072321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:19,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:19,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:45:19,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227416028] [2022-11-20 11:45:19,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:19,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:45:19,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:19,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:45:19,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:45:19,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-20 11:45:19,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:19,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-20 11:45:19,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:19,658 INFO L130 PetriNetUnfolder]: 74/623 cut-off events. [2022-11-20 11:45:19,659 INFO L131 PetriNetUnfolder]: For 106/124 co-relation queries the response was YES. [2022-11-20 11:45:19,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 623 events. 74/623 cut-off events. For 106/124 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4245 event pairs, 34 based on Foata normal form. 1/544 useless extension candidates. Maximal degree in co-relation 886. Up to 84 conditions per place. [2022-11-20 11:45:19,669 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 18 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2022-11-20 11:45:19,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 298 flow [2022-11-20 11:45:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:45:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:45:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2022-11-20 11:45:19,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9053497942386831 [2022-11-20 11:45:19,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2022-11-20 11:45:19,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2022-11-20 11:45:19,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:19,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2022-11-20 11:45:19,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,681 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 218 flow. Second operand 3 states and 220 transitions. [2022-11-20 11:45:19,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 298 flow [2022-11-20 11:45:19,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:45:19,691 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 238 flow [2022-11-20 11:45:19,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2022-11-20 11:45:19,693 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2022-11-20 11:45:19,698 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 238 flow [2022-11-20 11:45:19,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:19,699 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] [2022-11-20 11:45:19,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:45:19,701 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:19,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:19,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1215262809, now seen corresponding path program 1 times [2022-11-20 11:45:19,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:19,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606293213] [2022-11-20 11:45:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:19,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:19,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:19,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606293213] [2022-11-20 11:45:19,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606293213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:19,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:19,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:45:19,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600113730] [2022-11-20 11:45:19,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:19,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:45:19,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:45:19,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:45:19,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 81 [2022-11-20 11:45:19,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:19,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 81 [2022-11-20 11:45:19,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:19,937 INFO L130 PetriNetUnfolder]: 64/602 cut-off events. [2022-11-20 11:45:19,937 INFO L131 PetriNetUnfolder]: For 204/220 co-relation queries the response was YES. [2022-11-20 11:45:19,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 602 events. 64/602 cut-off events. For 204/220 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4048 event pairs, 26 based on Foata normal form. 8/547 useless extension candidates. Maximal degree in co-relation 931. Up to 87 conditions per place. [2022-11-20 11:45:19,942 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 18 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2022-11-20 11:45:19,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 91 transitions, 322 flow [2022-11-20 11:45:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:45:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:45:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2022-11-20 11:45:19,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9012345679012346 [2022-11-20 11:45:19,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2022-11-20 11:45:19,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2022-11-20 11:45:19,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:19,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2022-11-20 11:45:19,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,948 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 238 flow. Second operand 3 states and 219 transitions. [2022-11-20 11:45:19,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 91 transitions, 322 flow [2022-11-20 11:45:19,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:45:19,958 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 252 flow [2022-11-20 11:45:19,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2022-11-20 11:45:19,961 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2022-11-20 11:45:19,961 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 252 flow [2022-11-20 11:45:19,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:19,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:19,962 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] [2022-11-20 11:45:19,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:45:19,963 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:19,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:19,966 INFO L85 PathProgramCache]: Analyzing trace with hash 363553065, now seen corresponding path program 1 times [2022-11-20 11:45:19,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:19,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369603306] [2022-11-20 11:45:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:19,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:20,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:20,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369603306] [2022-11-20 11:45:20,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369603306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:20,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:20,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:45:20,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588540245] [2022-11-20 11:45:20,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:20,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:45:20,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:20,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:45:20,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:45:20,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-20 11:45:20,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:20,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-20 11:45:20,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:20,177 INFO L130 PetriNetUnfolder]: 79/385 cut-off events. [2022-11-20 11:45:20,177 INFO L131 PetriNetUnfolder]: For 227/317 co-relation queries the response was YES. [2022-11-20 11:45:20,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 385 events. 79/385 cut-off events. For 227/317 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2288 event pairs, 34 based on Foata normal form. 9/345 useless extension candidates. Maximal degree in co-relation 850. Up to 158 conditions per place. [2022-11-20 11:45:20,181 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 36 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2022-11-20 11:45:20,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 102 transitions, 412 flow [2022-11-20 11:45:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:45:20,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:45:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2022-11-20 11:45:20,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8345679012345679 [2022-11-20 11:45:20,184 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 338 transitions. [2022-11-20 11:45:20,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 338 transitions. [2022-11-20 11:45:20,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:20,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 338 transitions. [2022-11-20 11:45:20,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,187 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,188 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 252 flow. Second operand 5 states and 338 transitions. [2022-11-20 11:45:20,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 102 transitions, 412 flow [2022-11-20 11:45:20,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:45:20,191 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 280 flow [2022-11-20 11:45:20,192 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2022-11-20 11:45:20,193 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2022-11-20 11:45:20,193 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 280 flow [2022-11-20 11:45:20,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:20,194 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 11:45:20,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:45:20,194 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:20,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:20,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1964963806, now seen corresponding path program 1 times [2022-11-20 11:45:20,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:20,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421482154] [2022-11-20 11:45:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:20,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:45:20,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:20,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421482154] [2022-11-20 11:45:20,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421482154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:20,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:20,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:45:20,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072082257] [2022-11-20 11:45:20,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:20,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:45:20,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:20,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:45:20,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:45:20,260 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-20 11:45:20,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:20,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-20 11:45:20,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:20,411 INFO L130 PetriNetUnfolder]: 90/419 cut-off events. [2022-11-20 11:45:20,412 INFO L131 PetriNetUnfolder]: For 228/326 co-relation queries the response was YES. [2022-11-20 11:45:20,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 419 events. 90/419 cut-off events. For 228/326 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2529 event pairs, 13 based on Foata normal form. 28/423 useless extension candidates. Maximal degree in co-relation 987. Up to 93 conditions per place. [2022-11-20 11:45:20,417 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 29 selfloop transitions, 8 changer transitions 0/99 dead transitions. [2022-11-20 11:45:20,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 99 transitions, 412 flow [2022-11-20 11:45:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:45:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:45:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 331 transitions. [2022-11-20 11:45:20,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.817283950617284 [2022-11-20 11:45:20,420 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 331 transitions. [2022-11-20 11:45:20,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 331 transitions. [2022-11-20 11:45:20,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:20,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 331 transitions. [2022-11-20 11:45:20,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.2) internal successors, (331), 5 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,424 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,424 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 280 flow. Second operand 5 states and 331 transitions. [2022-11-20 11:45:20,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 99 transitions, 412 flow [2022-11-20 11:45:20,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 99 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:45:20,429 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 298 flow [2022-11-20 11:45:20,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2022-11-20 11:45:20,430 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 21 predicate places. [2022-11-20 11:45:20,430 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 298 flow [2022-11-20 11:45:20,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:20,431 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:20,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:45:20,431 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:20,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:20,432 INFO L85 PathProgramCache]: Analyzing trace with hash -317074780, now seen corresponding path program 1 times [2022-11-20 11:45:20,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:20,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668814166] [2022-11-20 11:45:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:20,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:20,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:20,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668814166] [2022-11-20 11:45:20,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668814166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:20,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:20,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:45:20,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458461588] [2022-11-20 11:45:20,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:20,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:45:20,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:20,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:45:20,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:45:20,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-20 11:45:20,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:20,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-20 11:45:20,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:20,740 INFO L130 PetriNetUnfolder]: 184/1024 cut-off events. [2022-11-20 11:45:20,741 INFO L131 PetriNetUnfolder]: For 637/704 co-relation queries the response was YES. [2022-11-20 11:45:20,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 1024 events. 184/1024 cut-off events. For 637/704 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8159 event pairs, 32 based on Foata normal form. 37/1047 useless extension candidates. Maximal degree in co-relation 2224. Up to 144 conditions per place. [2022-11-20 11:45:20,753 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 28 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2022-11-20 11:45:20,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 106 transitions, 456 flow [2022-11-20 11:45:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:45:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:45:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 357 transitions. [2022-11-20 11:45:20,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8814814814814815 [2022-11-20 11:45:20,756 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 357 transitions. [2022-11-20 11:45:20,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 357 transitions. [2022-11-20 11:45:20,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:20,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 357 transitions. [2022-11-20 11:45:20,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,760 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,760 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 298 flow. Second operand 5 states and 357 transitions. [2022-11-20 11:45:20,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 106 transitions, 456 flow [2022-11-20 11:45:20,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 106 transitions, 444 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:45:20,766 INFO L231 Difference]: Finished difference. Result has 106 places, 95 transitions, 380 flow [2022-11-20 11:45:20,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=106, PETRI_TRANSITIONS=95} [2022-11-20 11:45:20,768 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2022-11-20 11:45:20,768 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 95 transitions, 380 flow [2022-11-20 11:45:20,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:20,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:20,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:45:20,769 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:20,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1458265281, now seen corresponding path program 1 times [2022-11-20 11:45:20,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:20,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604459218] [2022-11-20 11:45:20,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:20,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:20,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604459218] [2022-11-20 11:45:20,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604459218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:20,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:20,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:45:20,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772224388] [2022-11-20 11:45:20,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:20,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:45:20,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:20,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:45:20,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:45:20,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-20 11:45:20,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 95 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:20,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-20 11:45:20,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:21,155 INFO L130 PetriNetUnfolder]: 233/1132 cut-off events. [2022-11-20 11:45:21,155 INFO L131 PetriNetUnfolder]: For 1220/1309 co-relation queries the response was YES. [2022-11-20 11:45:21,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2679 conditions, 1132 events. 233/1132 cut-off events. For 1220/1309 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8944 event pairs, 15 based on Foata normal form. 55/1177 useless extension candidates. Maximal degree in co-relation 2629. Up to 206 conditions per place. [2022-11-20 11:45:21,171 INFO L137 encePairwiseOnDemand]: 74/81 looper letters, 30 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2022-11-20 11:45:21,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 112 transitions, 557 flow [2022-11-20 11:45:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:45:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:45:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2022-11-20 11:45:21,174 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740740740740741 [2022-11-20 11:45:21,174 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 354 transitions. [2022-11-20 11:45:21,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 354 transitions. [2022-11-20 11:45:21,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:21,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 354 transitions. [2022-11-20 11:45:21,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.8) internal successors, (354), 5 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,178 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,179 INFO L175 Difference]: Start difference. First operand has 106 places, 95 transitions, 380 flow. Second operand 5 states and 354 transitions. [2022-11-20 11:45:21,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 112 transitions, 557 flow [2022-11-20 11:45:21,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 112 transitions, 555 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-20 11:45:21,188 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 450 flow [2022-11-20 11:45:21,189 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=112, PETRI_TRANSITIONS=99} [2022-11-20 11:45:21,189 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 31 predicate places. [2022-11-20 11:45:21,190 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 450 flow [2022-11-20 11:45:21,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,190 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:21,190 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:21,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:45:21,191 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:21,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:21,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1481320492, now seen corresponding path program 1 times [2022-11-20 11:45:21,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:21,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162979115] [2022-11-20 11:45:21,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:21,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:21,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:21,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162979115] [2022-11-20 11:45:21,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162979115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:21,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:21,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:45:21,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455382585] [2022-11-20 11:45:21,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:21,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:45:21,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:21,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:45:21,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:45:21,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-20 11:45:21,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 99 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:21,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-20 11:45:21,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:21,431 INFO L130 PetriNetUnfolder]: 132/814 cut-off events. [2022-11-20 11:45:21,431 INFO L131 PetriNetUnfolder]: For 1160/1210 co-relation queries the response was YES. [2022-11-20 11:45:21,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1935 conditions, 814 events. 132/814 cut-off events. For 1160/1210 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5894 event pairs, 83 based on Foata normal form. 32/834 useless extension candidates. Maximal degree in co-relation 1879. Up to 231 conditions per place. [2022-11-20 11:45:21,442 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 21 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2022-11-20 11:45:21,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 92 transitions, 433 flow [2022-11-20 11:45:21,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:45:21,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:45:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2022-11-20 11:45:21,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8395061728395061 [2022-11-20 11:45:21,444 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2022-11-20 11:45:21,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2022-11-20 11:45:21,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:21,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2022-11-20 11:45:21,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,448 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,448 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 450 flow. Second operand 4 states and 272 transitions. [2022-11-20 11:45:21,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 92 transitions, 433 flow [2022-11-20 11:45:21,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 92 transitions, 406 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-11-20 11:45:21,454 INFO L231 Difference]: Finished difference. Result has 109 places, 92 transitions, 364 flow [2022-11-20 11:45:21,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=109, PETRI_TRANSITIONS=92} [2022-11-20 11:45:21,456 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 28 predicate places. [2022-11-20 11:45:21,456 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 92 transitions, 364 flow [2022-11-20 11:45:21,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:21,457 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:21,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:45:21,457 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:21,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:21,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1481320491, now seen corresponding path program 1 times [2022-11-20 11:45:21,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:21,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130231457] [2022-11-20 11:45:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:21,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:21,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:21,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130231457] [2022-11-20 11:45:21,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130231457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:21,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:21,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:45:21,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949830035] [2022-11-20 11:45:21,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:21,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:45:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:21,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:45:21,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:45:21,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-20 11:45:21,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 92 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:21,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-20 11:45:21,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:21,771 INFO L130 PetriNetUnfolder]: 152/901 cut-off events. [2022-11-20 11:45:21,771 INFO L131 PetriNetUnfolder]: For 687/699 co-relation queries the response was YES. [2022-11-20 11:45:21,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 901 events. 152/901 cut-off events. For 687/699 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6605 event pairs, 6 based on Foata normal form. 21/921 useless extension candidates. Maximal degree in co-relation 1988. Up to 199 conditions per place. [2022-11-20 11:45:21,780 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 30 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2022-11-20 11:45:21,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 104 transitions, 478 flow [2022-11-20 11:45:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:45:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:45:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 351 transitions. [2022-11-20 11:45:21,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-20 11:45:21,782 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 351 transitions. [2022-11-20 11:45:21,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 351 transitions. [2022-11-20 11:45:21,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:21,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 351 transitions. [2022-11-20 11:45:21,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,787 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,788 INFO L175 Difference]: Start difference. First operand has 109 places, 92 transitions, 364 flow. Second operand 5 states and 351 transitions. [2022-11-20 11:45:21,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 104 transitions, 478 flow [2022-11-20 11:45:21,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 104 transitions, 475 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:45:21,794 INFO L231 Difference]: Finished difference. Result has 113 places, 93 transitions, 387 flow [2022-11-20 11:45:21,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=113, PETRI_TRANSITIONS=93} [2022-11-20 11:45:21,795 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 32 predicate places. [2022-11-20 11:45:21,795 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 93 transitions, 387 flow [2022-11-20 11:45:21,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:21,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:21,796 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] [2022-11-20 11:45:21,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:45:21,796 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:21,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:21,797 INFO L85 PathProgramCache]: Analyzing trace with hash 784336079, now seen corresponding path program 1 times [2022-11-20 11:45:21,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:21,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802293193] [2022-11-20 11:45:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:21,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:21,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:21,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802293193] [2022-11-20 11:45:21,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802293193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:45:21,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64503302] [2022-11-20 11:45:21,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:21,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:45:21,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:45:21,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:45:21,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:45:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:22,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:45:22,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:22,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:45:22,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64503302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:22,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:45:22,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:45:22,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29591759] [2022-11-20 11:45:22,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:22,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:45:22,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:45:22,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:45:22,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-20 11:45:22,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 93 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:22,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:22,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-20 11:45:22,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:22,378 INFO L130 PetriNetUnfolder]: 96/447 cut-off events. [2022-11-20 11:45:22,378 INFO L131 PetriNetUnfolder]: For 597/630 co-relation queries the response was YES. [2022-11-20 11:45:22,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 447 events. 96/447 cut-off events. For 597/630 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2683 event pairs, 5 based on Foata normal form. 23/451 useless extension candidates. Maximal degree in co-relation 1221. Up to 88 conditions per place. [2022-11-20 11:45:22,385 INFO L137 encePairwiseOnDemand]: 76/81 looper letters, 41 selfloop transitions, 6 changer transitions 0/113 dead transitions. [2022-11-20 11:45:22,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 113 transitions, 618 flow [2022-11-20 11:45:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:45:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:45:22,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 457 transitions. [2022-11-20 11:45:22,388 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8059964726631393 [2022-11-20 11:45:22,388 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 457 transitions. [2022-11-20 11:45:22,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 457 transitions. [2022-11-20 11:45:22,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:22,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 457 transitions. [2022-11-20 11:45:22,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:22,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 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) [2022-11-20 11:45:22,394 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 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) [2022-11-20 11:45:22,394 INFO L175 Difference]: Start difference. First operand has 113 places, 93 transitions, 387 flow. Second operand 7 states and 457 transitions. [2022-11-20 11:45:22,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 113 transitions, 618 flow [2022-11-20 11:45:22,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 596 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-20 11:45:22,407 INFO L231 Difference]: Finished difference. Result has 116 places, 92 transitions, 385 flow [2022-11-20 11:45:22,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=116, PETRI_TRANSITIONS=92} [2022-11-20 11:45:22,410 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 35 predicate places. [2022-11-20 11:45:22,411 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 92 transitions, 385 flow [2022-11-20 11:45:22,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:22,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:22,412 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:22,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:45:22,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:45:22,619 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:22,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:22,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1998744924, now seen corresponding path program 1 times [2022-11-20 11:45:22,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:22,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791015888] [2022-11-20 11:45:22,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:22,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:45:22,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:22,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791015888] [2022-11-20 11:45:22,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791015888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:22,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:22,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:45:22,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104227667] [2022-11-20 11:45:22,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:22,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:45:22,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:22,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:45:22,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:45:22,689 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-20 11:45:22,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 92 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:22,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:22,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-20 11:45:22,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:22,816 INFO L130 PetriNetUnfolder]: 103/426 cut-off events. [2022-11-20 11:45:22,817 INFO L131 PetriNetUnfolder]: For 633/676 co-relation queries the response was YES. [2022-11-20 11:45:22,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 426 events. 103/426 cut-off events. For 633/676 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2309 event pairs, 9 based on Foata normal form. 28/439 useless extension candidates. Maximal degree in co-relation 1207. Up to 98 conditions per place. [2022-11-20 11:45:22,824 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 29 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2022-11-20 11:45:22,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 102 transitions, 535 flow [2022-11-20 11:45:22,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:45:22,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:45:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 323 transitions. [2022-11-20 11:45:22,826 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7975308641975308 [2022-11-20 11:45:22,826 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 323 transitions. [2022-11-20 11:45:22,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 323 transitions. [2022-11-20 11:45:22,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:22,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 323 transitions. [2022-11-20 11:45:22,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:22,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:22,830 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:22,830 INFO L175 Difference]: Start difference. First operand has 116 places, 92 transitions, 385 flow. Second operand 5 states and 323 transitions. [2022-11-20 11:45:22,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 102 transitions, 535 flow [2022-11-20 11:45:22,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 102 transitions, 524 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 11:45:22,836 INFO L231 Difference]: Finished difference. Result has 115 places, 92 transitions, 394 flow [2022-11-20 11:45:22,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=115, PETRI_TRANSITIONS=92} [2022-11-20 11:45:22,837 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 34 predicate places. [2022-11-20 11:45:22,838 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 92 transitions, 394 flow [2022-11-20 11:45:22,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:22,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:22,838 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] [2022-11-20 11:45:22,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:45:22,839 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:22,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1831550754, now seen corresponding path program 1 times [2022-11-20 11:45:22,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:22,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375965415] [2022-11-20 11:45:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:22,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:22,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:22,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375965415] [2022-11-20 11:45:22,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375965415] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:45:22,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862984460] [2022-11-20 11:45:22,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:22,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:45:22,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:45:22,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:45:22,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:45:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:45:23,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:23,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:45:23,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862984460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:23,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:45:23,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:45:23,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193675558] [2022-11-20 11:45:23,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:23,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:45:23,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:23,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:45:23,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:45:23,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-20 11:45:23,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 92 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:23,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:23,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-20 11:45:23,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:23,325 INFO L130 PetriNetUnfolder]: 82/385 cut-off events. [2022-11-20 11:45:23,326 INFO L131 PetriNetUnfolder]: For 573/599 co-relation queries the response was YES. [2022-11-20 11:45:23,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 385 events. 82/385 cut-off events. For 573/599 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2095 event pairs, 3 based on Foata normal form. 20/395 useless extension candidates. Maximal degree in co-relation 1127. Up to 79 conditions per place. [2022-11-20 11:45:23,331 INFO L137 encePairwiseOnDemand]: 76/81 looper letters, 36 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2022-11-20 11:45:23,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 107 transitions, 585 flow [2022-11-20 11:45:23,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:45:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:45:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 452 transitions. [2022-11-20 11:45:23,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7971781305114638 [2022-11-20 11:45:23,334 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 452 transitions. [2022-11-20 11:45:23,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 452 transitions. [2022-11-20 11:45:23,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:23,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 452 transitions. [2022-11-20 11:45:23,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:23,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 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) [2022-11-20 11:45:23,338 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 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) [2022-11-20 11:45:23,338 INFO L175 Difference]: Start difference. First operand has 115 places, 92 transitions, 394 flow. Second operand 7 states and 452 transitions. [2022-11-20 11:45:23,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 107 transitions, 585 flow [2022-11-20 11:45:23,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 107 transitions, 573 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:45:23,343 INFO L231 Difference]: Finished difference. Result has 117 places, 91 transitions, 390 flow [2022-11-20 11:45:23,343 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=117, PETRI_TRANSITIONS=91} [2022-11-20 11:45:23,344 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 36 predicate places. [2022-11-20 11:45:23,344 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 91 transitions, 390 flow [2022-11-20 11:45:23,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:23,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:23,345 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 11:45:23,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:45:23,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:45:23,551 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:23,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:23,551 INFO L85 PathProgramCache]: Analyzing trace with hash 338958765, now seen corresponding path program 1 times [2022-11-20 11:45:23,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:23,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826901517] [2022-11-20 11:45:23,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:23,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:23,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:23,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826901517] [2022-11-20 11:45:23,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826901517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:45:23,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234314908] [2022-11-20 11:45:23,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:23,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:45:23,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:45:23,619 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:45:23,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:45:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:45:23,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:23,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:23,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234314908] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:23,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:45:23,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-20 11:45:23,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676519566] [2022-11-20 11:45:23,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:23,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:45:23,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:23,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:45:23,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:45:23,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-20 11:45:23,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 91 transitions, 390 flow. Second operand has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:23,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:23,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-20 11:45:23,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:24,104 INFO L130 PetriNetUnfolder]: 148/906 cut-off events. [2022-11-20 11:45:24,105 INFO L131 PetriNetUnfolder]: For 1165/1191 co-relation queries the response was YES. [2022-11-20 11:45:24,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2195 conditions, 906 events. 148/906 cut-off events. For 1165/1191 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5889 event pairs, 6 based on Foata normal form. 68/968 useless extension candidates. Maximal degree in co-relation 2154. Up to 77 conditions per place. [2022-11-20 11:45:24,115 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 33 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2022-11-20 11:45:24,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 113 transitions, 582 flow [2022-11-20 11:45:24,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:45:24,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:45:24,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 557 transitions. [2022-11-20 11:45:24,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595679012345679 [2022-11-20 11:45:24,118 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 557 transitions. [2022-11-20 11:45:24,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 557 transitions. [2022-11-20 11:45:24,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:24,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 557 transitions. [2022-11-20 11:45:24,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.625) internal successors, (557), 8 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:24,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:24,124 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 81.0) internal successors, (729), 9 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:24,124 INFO L175 Difference]: Start difference. First operand has 117 places, 91 transitions, 390 flow. Second operand 8 states and 557 transitions. [2022-11-20 11:45:24,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 113 transitions, 582 flow [2022-11-20 11:45:24,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 113 transitions, 569 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-20 11:45:24,132 INFO L231 Difference]: Finished difference. Result has 124 places, 97 transitions, 497 flow [2022-11-20 11:45:24,133 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=497, PETRI_PLACES=124, PETRI_TRANSITIONS=97} [2022-11-20 11:45:24,133 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 43 predicate places. [2022-11-20 11:45:24,133 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 97 transitions, 497 flow [2022-11-20 11:45:24,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:24,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:24,134 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 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] [2022-11-20 11:45:24,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:45:24,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:45:24,340 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash -147926171, now seen corresponding path program 1 times [2022-11-20 11:45:24,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:24,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096917523] [2022-11-20 11:45:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:24,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:24,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:24,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096917523] [2022-11-20 11:45:24,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096917523] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:45:24,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467020848] [2022-11-20 11:45:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:24,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:45:24,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:45:24,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:45:24,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:45:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:24,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:45:24,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:24,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:24,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467020848] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:24,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:45:24,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-20 11:45:24,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929958904] [2022-11-20 11:45:24,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:24,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:45:24,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:24,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:45:24,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:45:24,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-20 11:45:24,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 97 transitions, 497 flow. Second operand has 12 states, 12 states have (on average 66.5) internal successors, (798), 12 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:24,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:24,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-20 11:45:24,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:25,241 INFO L130 PetriNetUnfolder]: 154/1070 cut-off events. [2022-11-20 11:45:25,241 INFO L131 PetriNetUnfolder]: For 2165/2195 co-relation queries the response was YES. [2022-11-20 11:45:25,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1070 events. 154/1070 cut-off events. For 2165/2195 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6685 event pairs, 0 based on Foata normal form. 72/1141 useless extension candidates. Maximal degree in co-relation 2697. Up to 91 conditions per place. [2022-11-20 11:45:25,255 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 43 selfloop transitions, 18 changer transitions 0/128 dead transitions. [2022-11-20 11:45:25,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 764 flow [2022-11-20 11:45:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:45:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:45:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 904 transitions. [2022-11-20 11:45:25,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8584995251661919 [2022-11-20 11:45:25,259 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 904 transitions. [2022-11-20 11:45:25,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 904 transitions. [2022-11-20 11:45:25,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:25,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 904 transitions. [2022-11-20 11:45:25,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.53846153846153) internal successors, (904), 13 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:25,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 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) [2022-11-20 11:45:25,266 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 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) [2022-11-20 11:45:25,266 INFO L175 Difference]: Start difference. First operand has 124 places, 97 transitions, 497 flow. Second operand 13 states and 904 transitions. [2022-11-20 11:45:25,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 764 flow [2022-11-20 11:45:25,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 711 flow, removed 21 selfloop flow, removed 3 redundant places. [2022-11-20 11:45:25,275 INFO L231 Difference]: Finished difference. Result has 139 places, 99 transitions, 543 flow [2022-11-20 11:45:25,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=543, PETRI_PLACES=139, PETRI_TRANSITIONS=99} [2022-11-20 11:45:25,276 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 58 predicate places. [2022-11-20 11:45:25,277 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 99 transitions, 543 flow [2022-11-20 11:45:25,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 66.5) internal successors, (798), 12 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:25,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:25,278 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:45:25,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:45:25,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:45:25,484 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:25,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2001455967, now seen corresponding path program 1 times [2022-11-20 11:45:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:25,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946070453] [2022-11-20 11:45:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:25,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:25,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946070453] [2022-11-20 11:45:25,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946070453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:45:25,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174186404] [2022-11-20 11:45:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:25,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:45:25,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:45:25,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:45:25,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:45:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:25,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:45:25,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:25,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:26,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174186404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:26,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:45:26,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-20 11:45:26,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607963631] [2022-11-20 11:45:26,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:26,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:45:26,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:26,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:45:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:45:26,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-20 11:45:26,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 99 transitions, 543 flow. Second operand has 16 states, 16 states have (on average 66.3125) internal successors, (1061), 16 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:26,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:26,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-20 11:45:26,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:26,575 INFO L130 PetriNetUnfolder]: 203/1426 cut-off events. [2022-11-20 11:45:26,575 INFO L131 PetriNetUnfolder]: For 3330/3362 co-relation queries the response was YES. [2022-11-20 11:45:26,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3663 conditions, 1426 events. 203/1426 cut-off events. For 3330/3362 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8892 event pairs, 6 based on Foata normal form. 50/1470 useless extension candidates. Maximal degree in co-relation 3610. Up to 118 conditions per place. [2022-11-20 11:45:26,594 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 53 selfloop transitions, 25 changer transitions 0/145 dead transitions. [2022-11-20 11:45:26,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 145 transitions, 944 flow [2022-11-20 11:45:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:45:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 11:45:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1109 transitions. [2022-11-20 11:45:26,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8557098765432098 [2022-11-20 11:45:26,598 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1109 transitions. [2022-11-20 11:45:26,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1109 transitions. [2022-11-20 11:45:26,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:26,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1109 transitions. [2022-11-20 11:45:26,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 69.3125) internal successors, (1109), 16 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:26,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:26,606 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:26,606 INFO L175 Difference]: Start difference. First operand has 139 places, 99 transitions, 543 flow. Second operand 16 states and 1109 transitions. [2022-11-20 11:45:26,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 145 transitions, 944 flow [2022-11-20 11:45:26,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 145 transitions, 929 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-20 11:45:26,619 INFO L231 Difference]: Finished difference. Result has 157 places, 107 transitions, 694 flow [2022-11-20 11:45:26,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=694, PETRI_PLACES=157, PETRI_TRANSITIONS=107} [2022-11-20 11:45:26,620 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 76 predicate places. [2022-11-20 11:45:26,620 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 107 transitions, 694 flow [2022-11-20 11:45:26,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.3125) internal successors, (1061), 16 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:26,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:26,621 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:26,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:45:26,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:45:26,827 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:26,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:26,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1182725167, now seen corresponding path program 2 times [2022-11-20 11:45:26,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:26,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269204673] [2022-11-20 11:45:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:26,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:27,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:27,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269204673] [2022-11-20 11:45:27,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269204673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:45:27,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308857160] [2022-11-20 11:45:27,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:45:27,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:45:27,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:45:27,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:45:27,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:45:27,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:45:27,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:45:27,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:45:27,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:27,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:27,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308857160] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:27,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:45:27,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-11-20 11:45:27,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019602148] [2022-11-20 11:45:27,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:27,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 11:45:27,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:27,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 11:45:27,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:45:27,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-20 11:45:27,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 107 transitions, 694 flow. Second operand has 28 states, 28 states have (on average 66.21428571428571) internal successors, (1854), 28 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:27,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:27,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-20 11:45:27,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:28,959 INFO L130 PetriNetUnfolder]: 311/2178 cut-off events. [2022-11-20 11:45:28,959 INFO L131 PetriNetUnfolder]: For 7111/7123 co-relation queries the response was YES. [2022-11-20 11:45:28,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5743 conditions, 2178 events. 311/2178 cut-off events. For 7111/7123 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 13086 event pairs, 3 based on Foata normal form. 78/2252 useless extension candidates. Maximal degree in co-relation 5682. Up to 178 conditions per place. [2022-11-20 11:45:28,999 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 91 selfloop transitions, 42 changer transitions 0/200 dead transitions. [2022-11-20 11:45:28,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 200 transitions, 1489 flow [2022-11-20 11:45:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 11:45:29,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 11:45:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2013 transitions. [2022-11-20 11:45:29,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8569604086845466 [2022-11-20 11:45:29,005 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2013 transitions. [2022-11-20 11:45:29,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2013 transitions. [2022-11-20 11:45:29,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:29,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2013 transitions. [2022-11-20 11:45:29,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 69.41379310344827) internal successors, (2013), 29 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:29,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 81.0) internal successors, (2430), 30 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) [2022-11-20 11:45:29,022 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 81.0) internal successors, (2430), 30 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) [2022-11-20 11:45:29,022 INFO L175 Difference]: Start difference. First operand has 157 places, 107 transitions, 694 flow. Second operand 29 states and 2013 transitions. [2022-11-20 11:45:29,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 200 transitions, 1489 flow [2022-11-20 11:45:29,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 200 transitions, 1407 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 11:45:29,046 INFO L231 Difference]: Finished difference. Result has 191 places, 123 transitions, 956 flow [2022-11-20 11:45:29,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=956, PETRI_PLACES=191, PETRI_TRANSITIONS=123} [2022-11-20 11:45:29,047 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 110 predicate places. [2022-11-20 11:45:29,048 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 123 transitions, 956 flow [2022-11-20 11:45:29,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 66.21428571428571) internal successors, (1854), 28 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:29,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:29,049 INFO L209 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:29,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:45:29,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:45:29,259 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:29,260 INFO L85 PathProgramCache]: Analyzing trace with hash 315234667, now seen corresponding path program 2 times [2022-11-20 11:45:29,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:29,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217578204] [2022-11-20 11:45:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:29,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:30,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:30,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217578204] [2022-11-20 11:45:30,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217578204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:45:30,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125318492] [2022-11-20 11:45:30,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:45:30,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:45:30,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:45:30,145 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:45:30,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:45:30,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:45:30,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:45:30,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:45:30,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:30,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:31,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125318492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:31,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:45:31,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-20 11:45:31,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146614067] [2022-11-20 11:45:31,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:31,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 11:45:31,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:31,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 11:45:31,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 11:45:31,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 81 [2022-11-20 11:45:31,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 123 transitions, 956 flow. Second operand has 48 states, 48 states have (on average 66.10416666666667) internal successors, (3173), 48 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:31,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:31,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 81 [2022-11-20 11:45:31,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:34,720 INFO L130 PetriNetUnfolder]: 523/3666 cut-off events. [2022-11-20 11:45:34,721 INFO L131 PetriNetUnfolder]: For 22107/22141 co-relation queries the response was YES. [2022-11-20 11:45:34,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9704 conditions, 3666 events. 523/3666 cut-off events. For 22107/22141 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 21815 event pairs, 6 based on Foata normal form. 146/3806 useless extension candidates. Maximal degree in co-relation 9630. Up to 310 conditions per place. [2022-11-20 11:45:34,768 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 149 selfloop transitions, 73 changer transitions 0/289 dead transitions. [2022-11-20 11:45:34,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 289 transitions, 2389 flow [2022-11-20 11:45:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 11:45:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-20 11:45:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3333 transitions. [2022-11-20 11:45:34,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8572530864197531 [2022-11-20 11:45:34,776 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3333 transitions. [2022-11-20 11:45:34,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3333 transitions. [2022-11-20 11:45:34,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:34,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3333 transitions. [2022-11-20 11:45:34,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 69.4375) internal successors, (3333), 48 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:34,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 81.0) internal successors, (3969), 49 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:34,795 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 81.0) internal successors, (3969), 49 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:34,795 INFO L175 Difference]: Start difference. First operand has 191 places, 123 transitions, 956 flow. Second operand 48 states and 3333 transitions. [2022-11-20 11:45:34,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 289 transitions, 2389 flow [2022-11-20 11:45:34,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 289 transitions, 2241 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-20 11:45:34,859 INFO L231 Difference]: Finished difference. Result has 249 places, 155 transitions, 1462 flow [2022-11-20 11:45:34,860 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1462, PETRI_PLACES=249, PETRI_TRANSITIONS=155} [2022-11-20 11:45:34,860 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 168 predicate places. [2022-11-20 11:45:34,860 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 155 transitions, 1462 flow [2022-11-20 11:45:34,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 66.10416666666667) internal successors, (3173), 48 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:34,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:34,863 INFO L209 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:34,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:45:35,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:45:35,070 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:45:35,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:35,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1068848841, now seen corresponding path program 3 times [2022-11-20 11:45:35,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:35,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522382056] [2022-11-20 11:45:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:35,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 0 proven. 3173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:37,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:37,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522382056] [2022-11-20 11:45:37,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522382056] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:45:37,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695991479] [2022-11-20 11:45:37,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:45:37,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:45:37,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:45:37,606 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:45:37,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:45:37,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2022-11-20 11:45:37,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:45:37,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 11:45:37,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 3151 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:45:40,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:45:40,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695991479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:40,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:45:40,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [46] total 90 [2022-11-20 11:45:40,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147554961] [2022-11-20 11:45:40,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:40,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-20 11:45:40,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:40,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-20 11:45:40,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1102, Invalid=6908, Unknown=0, NotChecked=0, Total=8010 [2022-11-20 11:45:40,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 81 [2022-11-20 11:45:40,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 155 transitions, 1462 flow. Second operand has 45 states, 45 states have (on average 64.82222222222222) internal successors, (2917), 45 states have internal predecessors, (2917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:40,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:40,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 81 [2022-11-20 11:45:40,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:49,887 INFO L130 PetriNetUnfolder]: 6803/17680 cut-off events. [2022-11-20 11:45:49,888 INFO L131 PetriNetUnfolder]: For 95965/95981 co-relation queries the response was YES. [2022-11-20 11:45:50,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72522 conditions, 17680 events. 6803/17680 cut-off events. For 95965/95981 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 153395 event pairs, 2 based on Foata normal form. 91/16923 useless extension candidates. Maximal degree in co-relation 72447. Up to 5886 conditions per place. [2022-11-20 11:45:50,101 INFO L137 encePairwiseOnDemand]: 75/81 looper letters, 0 selfloop transitions, 0 changer transitions 1909/1909 dead transitions. [2022-11-20 11:45:50,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 1909 transitions, 26357 flow [2022-11-20 11:45:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-20 11:45:50,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-11-20 11:45:50,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 4130 transitions. [2022-11-20 11:45:50,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8093278463648834 [2022-11-20 11:45:50,111 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 4130 transitions. [2022-11-20 11:45:50,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 4130 transitions. [2022-11-20 11:45:50,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:50,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 4130 transitions. [2022-11-20 11:45:50,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 65.55555555555556) internal successors, (4130), 63 states have internal predecessors, (4130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:50,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 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) [2022-11-20 11:45:50,137 INFO L81 ComplementDD]: Finished complementDD. Result 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) [2022-11-20 11:45:50,137 INFO L175 Difference]: Start difference. First operand has 249 places, 155 transitions, 1462 flow. Second operand 63 states and 4130 transitions. [2022-11-20 11:45:50,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 1909 transitions, 26357 flow [2022-11-20 11:45:50,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 1909 transitions, 17882 flow, removed 62 selfloop flow, removed 74 redundant places. [2022-11-20 11:45:50,866 INFO L231 Difference]: Finished difference. Result has 231 places, 0 transitions, 0 flow [2022-11-20 11:45:50,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=0, PETRI_PLACES=231, PETRI_TRANSITIONS=0} [2022-11-20 11:45:50,870 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 150 predicate places. [2022-11-20 11:45:50,870 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 0 transitions, 0 flow [2022-11-20 11:45:50,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 64.82222222222222) internal successors, (2917), 45 states have internal predecessors, (2917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:50,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-20 11:45:50,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2022-11-20 11:45:50,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-20 11:45:50,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-20 11:45:50,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-20 11:45:50,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-20 11:45:50,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-20 11:45:50,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-20 11:45:50,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-20 11:45:50,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-20 11:45:50,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-20 11:45:50,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-20 11:45:50,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-20 11:45:50,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-20 11:45:50,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-20 11:45:50,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-20 11:45:50,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-20 11:45:50,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-20 11:45:50,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:45:51,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:45:51,088 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:51,093 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:45:51,093 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:45:51,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:45:51 BasicIcfg [2022-11-20 11:45:51,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:45:51,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:45:51,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:45:51,099 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:45:51,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:45:17" (3/4) ... [2022-11-20 11:45:51,102 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:45:51,108 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-20 11:45:51,108 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-20 11:45:51,111 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-20 11:45:51,112 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:45:51,112 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:45:51,112 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:45:51,146 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:45:51,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:45:51,147 INFO L158 Benchmark]: Toolchain (without parser) took 34677.67ms. Allocated memory was 203.4MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 155.2MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 395.0MB. Max. memory is 16.1GB. [2022-11-20 11:45:51,148 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 140.5MB. Free memory was 84.5MB in the beginning and 84.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:45:51,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 605.17ms. Allocated memory is still 203.4MB. Free memory was 154.5MB in the beginning and 135.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 11:45:51,151 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.79ms. Allocated memory is still 203.4MB. Free memory was 135.6MB in the beginning and 134.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:45:51,151 INFO L158 Benchmark]: Boogie Preprocessor took 58.73ms. Allocated memory is still 203.4MB. Free memory was 134.2MB in the beginning and 132.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:45:51,151 INFO L158 Benchmark]: RCFGBuilder took 524.57ms. Allocated memory is still 203.4MB. Free memory was 132.1MB in the beginning and 118.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 11:45:51,152 INFO L158 Benchmark]: TraceAbstraction took 33367.76ms. Allocated memory was 203.4MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 117.4MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 552.3MB. Max. memory is 16.1GB. [2022-11-20 11:45:51,152 INFO L158 Benchmark]: Witness Printer took 48.23ms. Allocated memory is still 2.1GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:45:51,154 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 140.5MB. Free memory was 84.5MB in the beginning and 84.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 605.17ms. Allocated memory is still 203.4MB. Free memory was 154.5MB in the beginning and 135.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.79ms. Allocated memory is still 203.4MB. Free memory was 135.6MB in the beginning and 134.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 58.73ms. Allocated memory is still 203.4MB. Free memory was 134.2MB in the beginning and 132.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 524.57ms. Allocated memory is still 203.4MB. Free memory was 132.1MB in the beginning and 118.1MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 33367.76ms. Allocated memory was 203.4MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 117.4MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 552.3MB. Max. memory is 16.1GB. * Witness Printer took 48.23ms. Allocated memory is still 2.1GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 111 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 33.2s, OverallIterations: 20, TraceHistogramMax: 23, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 19.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1719 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1719 mSDsluCounter, 243 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 156 mSDsCounter, 119 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2588 IncrementalHoareTripleChecker+Invalid, 2707 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 119 mSolverCounterUnsat, 87 mSDtfsCounter, 2588 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1643 GetRequests, 1273 SyntacticMatches, 0 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5999 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1462occurred in iteration=19, InterpolantAutomatonStates: 242, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 2190 NumberOfCodeBlocks, 2175 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 2629 ConstructedInterpolants, 0 QuantifiedInterpolants, 6949 SizeOfPredicates, 94 NumberOfNonLiveVariables, 1944 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 33 InterpolantComputations, 15 PerfectInterpolantSequences, 3191/9350 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:45:51,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44e615d2-e20b-4d41-98d6-88d9ed5fa891/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE