./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longest-1.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_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/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_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/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_4523bbf4-0cfc-4376-8b57-769ea73cff0c/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 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 --- 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 09:29:33,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:29:33,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:29:33,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:29:33,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:29:33,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:29:33,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:29:33,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:29:33,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:29:33,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:29:33,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:29:33,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:29:33,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:29:33,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:29:33,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:29:33,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:29:33,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:29:33,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:29:33,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:29:33,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:29:33,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:29:33,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:29:33,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:29:33,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:29:33,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:29:33,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:29:33,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:29:33,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:29:33,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:29:33,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:29:33,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:29:33,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:29:33,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:29:33,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:29:33,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:29:33,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:29:33,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:29:33,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:29:33,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:29:33,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:29:33,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:29:33,217 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 09:29:33,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:29:33,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:29:33,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:29:33,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:29:33,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:29:33,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:29:33,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:29:33,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:29:33,261 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:29:33,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:29:33,262 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:29:33,262 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:29:33,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:29:33,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:29:33,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:29:33,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:29:33,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:29:33,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:29:33,263 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 09:29:33,264 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:29:33,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:29:33,271 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:29:33,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:29:33,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:29:33,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:29:33,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:29:33,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:29:33,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:29:33,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:29:33,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:29:33,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:29:33,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:29:33,274 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:29:33,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:29:33,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:29:33,274 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_4523bbf4-0cfc-4376-8b57-769ea73cff0c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 [2022-11-20 09:29:33,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:29:33,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:29:33,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:29:33,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:29:33,630 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:29:33,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/stack_longest-1.i [2022-11-20 09:29:36,756 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:29:37,122 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:29:37,123 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/sv-benchmarks/c/pthread/stack_longest-1.i [2022-11-20 09:29:37,140 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/data/7ec070662/e833f88fda19405596b001ba9f9002e1/FLAG872b9d6b0 [2022-11-20 09:29:37,169 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/data/7ec070662/e833f88fda19405596b001ba9f9002e1 [2022-11-20 09:29:37,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:29:37,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:29:37,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:29:37,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:29:37,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:29:37,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:37" (1/1) ... [2022-11-20 09:29:37,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794aa1c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:37, skipping insertion in model container [2022-11-20 09:29:37,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:37" (1/1) ... [2022-11-20 09:29:37,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:29:37,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:29:37,886 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_4523bbf4-0cfc-4376-8b57-769ea73cff0c/sv-benchmarks/c/pthread/stack_longest-1.i[41530,41543] [2022-11-20 09:29:37,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:29:37,954 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:29:38,020 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_4523bbf4-0cfc-4376-8b57-769ea73cff0c/sv-benchmarks/c/pthread/stack_longest-1.i[41530,41543] [2022-11-20 09:29:38,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:29:38,110 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:29:38,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:38 WrapperNode [2022-11-20 09:29:38,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:29:38,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:29:38,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:29:38,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:29:38,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:38" (1/1) ... [2022-11-20 09:29:38,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:38" (1/1) ... [2022-11-20 09:29:38,171 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 163 [2022-11-20 09:29:38,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:29:38,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:29:38,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:29:38,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:29:38,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:38" (1/1) ... [2022-11-20 09:29:38,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:38" (1/1) ... [2022-11-20 09:29:38,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:38" (1/1) ... [2022-11-20 09:29:38,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:38" (1/1) ... [2022-11-20 09:29:38,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:38" (1/1) ... [2022-11-20 09:29:38,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:38" (1/1) ... [2022-11-20 09:29:38,204 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:38" (1/1) ... [2022-11-20 09:29:38,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:38" (1/1) ... [2022-11-20 09:29:38,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:29:38,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:29:38,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:29:38,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:29:38,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:38" (1/1) ... [2022-11-20 09:29:38,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:29:38,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:38,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:29:38,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:29:38,295 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 09:29:38,295 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 09:29:38,295 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 09:29:38,296 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 09:29:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:29:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:29:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:29:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:29:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 09:29:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:29:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:29:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:29:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:29:38,300 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 09:29:38,571 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:29:38,573 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:29:38,976 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:29:38,988 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:29:38,991 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 09:29:38,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:29:38 BoogieIcfgContainer [2022-11-20 09:29:39,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:29:39,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:29:39,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:29:39,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:29:39,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:29:37" (1/3) ... [2022-11-20 09:29:39,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8deae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:29:39, skipping insertion in model container [2022-11-20 09:29:39,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:38" (2/3) ... [2022-11-20 09:29:39,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8deae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:29:39, skipping insertion in model container [2022-11-20 09:29:39,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:29:38" (3/3) ... [2022-11-20 09:29:39,016 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2022-11-20 09:29:39,038 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:29:39,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:29:39,078 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 09:29:39,078 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:29:39,218 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 09:29:39,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 193 transitions, 402 flow [2022-11-20 09:29:39,388 INFO L130 PetriNetUnfolder]: 10/191 cut-off events. [2022-11-20 09:29:39,388 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 09:29:39,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 191 events. 10/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 501 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 149. Up to 3 conditions per place. [2022-11-20 09:29:39,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 193 transitions, 402 flow [2022-11-20 09:29:39,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 181 transitions, 371 flow [2022-11-20 09:29:39,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:29:39,426 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;@4606f51e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:29:39,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-20 09:29:39,452 INFO L130 PetriNetUnfolder]: 3/79 cut-off events. [2022-11-20 09:29:39,452 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 09:29:39,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:39,453 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:39,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:39,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:39,461 INFO L85 PathProgramCache]: Analyzing trace with hash -733571018, now seen corresponding path program 1 times [2022-11-20 09:29:39,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:39,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980623507] [2022-11-20 09:29:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:39,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,077 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 09:29:40,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:40,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980623507] [2022-11-20 09:29:40,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980623507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:40,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:40,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:40,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040463284] [2022-11-20 09:29:40,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:40,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:29:40,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:40,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:29:40,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:29:40,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-20 09:29:40,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 181 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states 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 09:29:40,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:40,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-20 09:29:40,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:40,454 INFO L130 PetriNetUnfolder]: 28/363 cut-off events. [2022-11-20 09:29:40,454 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-20 09:29:40,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 363 events. 28/363 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1643 event pairs, 10 based on Foata normal form. 41/369 useless extension candidates. Maximal degree in co-relation 394. Up to 36 conditions per place. [2022-11-20 09:29:40,463 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 19 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2022-11-20 09:29:40,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 181 transitions, 426 flow [2022-11-20 09:29:40,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:40,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:29:40,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 897 transitions. [2022-11-20 09:29:40,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9295336787564766 [2022-11-20 09:29:40,487 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 897 transitions. [2022-11-20 09:29:40,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 897 transitions. [2022-11-20 09:29:40,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:40,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 897 transitions. [2022-11-20 09:29:40,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.4) internal successors, (897), 5 states have internal predecessors, (897), 0 states have call successors, (0), 0 states 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 09:29:40,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 09:29:40,513 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 09:29:40,521 INFO L175 Difference]: Start difference. First operand has 178 places, 181 transitions, 371 flow. Second operand 5 states and 897 transitions. [2022-11-20 09:29:40,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 181 transitions, 426 flow [2022-11-20 09:29:40,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 181 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:29:40,533 INFO L231 Difference]: Finished difference. Result has 178 places, 175 transitions, 380 flow [2022-11-20 09:29:40,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=178, PETRI_TRANSITIONS=175} [2022-11-20 09:29:40,540 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 0 predicate places. [2022-11-20 09:29:40,540 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 175 transitions, 380 flow [2022-11-20 09:29:40,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states 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 09:29:40,542 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:40,542 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:40,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:29:40,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:40,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 836642923, now seen corresponding path program 1 times [2022-11-20 09:29:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:40,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453872767] [2022-11-20 09:29:40,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:40,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:40,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:40,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453872767] [2022-11-20 09:29:40,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453872767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:40,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:40,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:40,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671556665] [2022-11-20 09:29:40,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:40,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:29:40,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:40,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:29:40,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:29:40,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-20 09:29:40,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 175 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 174.25) internal successors, (697), 4 states have internal predecessors, (697), 0 states have call successors, (0), 0 states 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 09:29:40,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:40,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-20 09:29:40,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:40,994 INFO L130 PetriNetUnfolder]: 27/360 cut-off events. [2022-11-20 09:29:40,995 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-20 09:29:40,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 360 events. 27/360 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1591 event pairs, 3 based on Foata normal form. 2/333 useless extension candidates. Maximal degree in co-relation 395. Up to 21 conditions per place. [2022-11-20 09:29:41,000 INFO L137 encePairwiseOnDemand]: 187/193 looper letters, 12 selfloop transitions, 8 changer transitions 0/178 dead transitions. [2022-11-20 09:29:41,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 178 transitions, 427 flow [2022-11-20 09:29:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:41,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:29:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 873 transitions. [2022-11-20 09:29:41,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9046632124352332 [2022-11-20 09:29:41,005 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 873 transitions. [2022-11-20 09:29:41,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 873 transitions. [2022-11-20 09:29:41,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:41,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 873 transitions. [2022-11-20 09:29:41,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states 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 09:29:41,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 09:29:41,014 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 09:29:41,014 INFO L175 Difference]: Start difference. First operand has 178 places, 175 transitions, 380 flow. Second operand 5 states and 873 transitions. [2022-11-20 09:29:41,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 178 transitions, 427 flow [2022-11-20 09:29:41,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 178 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:29:41,022 INFO L231 Difference]: Finished difference. Result has 181 places, 175 transitions, 398 flow [2022-11-20 09:29:41,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=181, PETRI_TRANSITIONS=175} [2022-11-20 09:29:41,023 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 3 predicate places. [2022-11-20 09:29:41,024 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 175 transitions, 398 flow [2022-11-20 09:29:41,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.25) internal successors, (697), 4 states have internal predecessors, (697), 0 states have call successors, (0), 0 states 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 09:29:41,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:41,025 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:41,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:29:41,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:41,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:41,027 INFO L85 PathProgramCache]: Analyzing trace with hash 166127393, now seen corresponding path program 1 times [2022-11-20 09:29:41,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:41,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401338368] [2022-11-20 09:29:41,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:41,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:41,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:41,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401338368] [2022-11-20 09:29:41,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401338368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:41,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764331281] [2022-11-20 09:29:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:41,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:41,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:41,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:41,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:29:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:41,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:29:41,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:41,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:41,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764331281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:41,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:41,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 09:29:41,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425841732] [2022-11-20 09:29:41,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:41,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:41,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:41,625 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-20 09:29:41,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 175 transitions, 398 flow. Second operand has 6 states, 6 states have (on average 173.33333333333334) internal successors, (1040), 6 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states 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 09:29:41,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:41,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-20 09:29:41,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:41,790 INFO L130 PetriNetUnfolder]: 26/357 cut-off events. [2022-11-20 09:29:41,790 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-20 09:29:41,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 357 events. 26/357 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1547 event pairs, 1 based on Foata normal form. 2/330 useless extension candidates. Maximal degree in co-relation 407. Up to 15 conditions per place. [2022-11-20 09:29:41,796 INFO L137 encePairwiseOnDemand]: 188/193 looper letters, 17 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2022-11-20 09:29:41,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 181 transitions, 459 flow [2022-11-20 09:29:41,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:29:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1221 transitions. [2022-11-20 09:29:41,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9037749814951888 [2022-11-20 09:29:41,800 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1221 transitions. [2022-11-20 09:29:41,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1221 transitions. [2022-11-20 09:29:41,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:41,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1221 transitions. [2022-11-20 09:29:41,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 174.42857142857142) internal successors, (1221), 7 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states 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 09:29:41,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states 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 09:29:41,809 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states 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 09:29:41,809 INFO L175 Difference]: Start difference. First operand has 181 places, 175 transitions, 398 flow. Second operand 7 states and 1221 transitions. [2022-11-20 09:29:41,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 181 transitions, 459 flow [2022-11-20 09:29:41,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 181 transitions, 447 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:29:41,815 INFO L231 Difference]: Finished difference. Result has 183 places, 174 transitions, 394 flow [2022-11-20 09:29:41,816 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=394, PETRI_PLACES=183, PETRI_TRANSITIONS=174} [2022-11-20 09:29:41,818 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 5 predicate places. [2022-11-20 09:29:41,818 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 174 transitions, 394 flow [2022-11-20 09:29:41,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.33333333333334) internal successors, (1040), 6 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states 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 09:29:41,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:41,820 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:41,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 09:29:42,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:42,027 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 09:29:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:42,028 INFO L85 PathProgramCache]: Analyzing trace with hash 630994691, now seen corresponding path program 1 times [2022-11-20 09:29:42,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:42,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557632000] [2022-11-20 09:29:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:42,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:42,143 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 09:29:42,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:42,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557632000] [2022-11-20 09:29:42,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557632000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:42,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:42,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:29:42,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558682554] [2022-11-20 09:29:42,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:42,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:42,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:42,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:42,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:42,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 193 [2022-11-20 09:29:42,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 174 transitions, 394 flow. Second operand has 5 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 09:29:42,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:42,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 193 [2022-11-20 09:29:42,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:42,796 INFO L130 PetriNetUnfolder]: 379/2569 cut-off events. [2022-11-20 09:29:42,797 INFO L131 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2022-11-20 09:29:42,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 2569 events. 379/2569 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 21426 event pairs, 140 based on Foata normal form. 0/2260 useless extension candidates. Maximal degree in co-relation 2622. Up to 347 conditions per place. [2022-11-20 09:29:42,823 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 58 selfloop transitions, 13 changer transitions 1/223 dead transitions. [2022-11-20 09:29:42,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 223 transitions, 644 flow [2022-11-20 09:29:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:29:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 09:29:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1373 transitions. [2022-11-20 09:29:42,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8892487046632125 [2022-11-20 09:29:42,833 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1373 transitions. [2022-11-20 09:29:42,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1373 transitions. [2022-11-20 09:29:42,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:42,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1373 transitions. [2022-11-20 09:29:42,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 171.625) internal successors, (1373), 8 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states 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 09:29:42,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states 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 09:29:42,845 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states 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 09:29:42,846 INFO L175 Difference]: Start difference. First operand has 183 places, 174 transitions, 394 flow. Second operand 8 states and 1373 transitions. [2022-11-20 09:29:42,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 223 transitions, 644 flow [2022-11-20 09:29:42,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 223 transitions, 633 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 09:29:42,856 INFO L231 Difference]: Finished difference. Result has 191 places, 185 transitions, 481 flow [2022-11-20 09:29:42,856 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=481, PETRI_PLACES=191, PETRI_TRANSITIONS=185} [2022-11-20 09:29:42,858 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 13 predicate places. [2022-11-20 09:29:42,858 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 185 transitions, 481 flow [2022-11-20 09:29:42,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 09:29:42,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:42,859 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:42,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:29:42,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:42,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:42,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1220337522, now seen corresponding path program 1 times [2022-11-20 09:29:42,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:42,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880602013] [2022-11-20 09:29:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:42,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:43,062 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 09:29:43,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:43,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880602013] [2022-11-20 09:29:43,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880602013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:43,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:43,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:43,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516219556] [2022-11-20 09:29:43,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:43,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:29:43,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:43,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:29:43,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:29:43,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 193 [2022-11-20 09:29:43,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 185 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 09:29:43,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:43,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 193 [2022-11-20 09:29:43,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:43,584 INFO L130 PetriNetUnfolder]: 226/2042 cut-off events. [2022-11-20 09:29:43,584 INFO L131 PetriNetUnfolder]: For 450/538 co-relation queries the response was YES. [2022-11-20 09:29:43,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 2042 events. 226/2042 cut-off events. For 450/538 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 15492 event pairs, 118 based on Foata normal form. 22/1855 useless extension candidates. Maximal degree in co-relation 2357. Up to 335 conditions per place. [2022-11-20 09:29:43,601 INFO L137 encePairwiseOnDemand]: 187/193 looper letters, 33 selfloop transitions, 6 changer transitions 0/201 dead transitions. [2022-11-20 09:29:43,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 201 transitions, 604 flow [2022-11-20 09:29:43,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:29:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 869 transitions. [2022-11-20 09:29:43,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.900518134715026 [2022-11-20 09:29:43,605 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 869 transitions. [2022-11-20 09:29:43,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 869 transitions. [2022-11-20 09:29:43,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:43,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 869 transitions. [2022-11-20 09:29:43,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 0 states have call successors, (0), 0 states 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 09:29:43,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 09:29:43,611 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 09:29:43,611 INFO L175 Difference]: Start difference. First operand has 191 places, 185 transitions, 481 flow. Second operand 5 states and 869 transitions. [2022-11-20 09:29:43,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 201 transitions, 604 flow [2022-11-20 09:29:43,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 201 transitions, 604 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:29:43,618 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 515 flow [2022-11-20 09:29:43,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=515, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2022-11-20 09:29:43,620 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 20 predicate places. [2022-11-20 09:29:43,620 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 515 flow [2022-11-20 09:29:43,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 09:29:43,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:43,621 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:43,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:29:43,621 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:43,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:43,622 INFO L85 PathProgramCache]: Analyzing trace with hash -6051491, now seen corresponding path program 1 times [2022-11-20 09:29:43,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:43,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749060581] [2022-11-20 09:29:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:43,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:43,746 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 09:29:43,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:43,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749060581] [2022-11-20 09:29:43,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749060581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:43,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:43,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:43,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114501822] [2022-11-20 09:29:43,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:43,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:29:43,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:43,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:29:43,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:29:43,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-20 09:29:43,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 515 flow. Second operand has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states 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 09:29:43,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:43,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-20 09:29:43,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:44,126 INFO L130 PetriNetUnfolder]: 74/1326 cut-off events. [2022-11-20 09:29:44,127 INFO L131 PetriNetUnfolder]: For 207/262 co-relation queries the response was YES. [2022-11-20 09:29:44,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1900 conditions, 1326 events. 74/1326 cut-off events. For 207/262 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8431 event pairs, 19 based on Foata normal form. 2/1226 useless extension candidates. Maximal degree in co-relation 1485. Up to 102 conditions per place. [2022-11-20 09:29:44,144 INFO L137 encePairwiseOnDemand]: 186/193 looper letters, 19 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2022-11-20 09:29:44,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 196 transitions, 585 flow [2022-11-20 09:29:44,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:29:44,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 881 transitions. [2022-11-20 09:29:44,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9129533678756476 [2022-11-20 09:29:44,149 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 881 transitions. [2022-11-20 09:29:44,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 881 transitions. [2022-11-20 09:29:44,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:44,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 881 transitions. [2022-11-20 09:29:44,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 09:29:44,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 09:29:44,157 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 09:29:44,158 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 515 flow. Second operand 5 states and 881 transitions. [2022-11-20 09:29:44,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 196 transitions, 585 flow [2022-11-20 09:29:44,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 196 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:29:44,168 INFO L231 Difference]: Finished difference. Result has 204 places, 190 transitions, 545 flow [2022-11-20 09:29:44,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=545, PETRI_PLACES=204, PETRI_TRANSITIONS=190} [2022-11-20 09:29:44,172 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 26 predicate places. [2022-11-20 09:29:44,173 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 190 transitions, 545 flow [2022-11-20 09:29:44,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states 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 09:29:44,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:44,178 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:44,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:29:44,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:44,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:44,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1638043772, now seen corresponding path program 1 times [2022-11-20 09:29:44,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:44,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756258051] [2022-11-20 09:29:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:44,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:44,403 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 09:29:44,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:44,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756258051] [2022-11-20 09:29:44,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756258051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:44,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:44,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:44,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771286878] [2022-11-20 09:29:44,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:44,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:29:44,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:44,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:29:44,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:29:44,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-20 09:29:44,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 190 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 09:29:44,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:44,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-20 09:29:44,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:44,662 INFO L130 PetriNetUnfolder]: 47/1170 cut-off events. [2022-11-20 09:29:44,662 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-11-20 09:29:44,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1556 conditions, 1170 events. 47/1170 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6448 event pairs, 12 based on Foata normal form. 12/1126 useless extension candidates. Maximal degree in co-relation 1394. Up to 42 conditions per place. [2022-11-20 09:29:44,673 INFO L137 encePairwiseOnDemand]: 189/193 looper letters, 12 selfloop transitions, 4 changer transitions 0/189 dead transitions. [2022-11-20 09:29:44,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 189 transitions, 562 flow [2022-11-20 09:29:44,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:29:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 09:29:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2022-11-20 09:29:44,677 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.917098445595855 [2022-11-20 09:29:44,677 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2022-11-20 09:29:44,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2022-11-20 09:29:44,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:44,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2022-11-20 09:29:44,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 09:29:44,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states 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 09:29:44,684 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states 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 09:29:44,684 INFO L175 Difference]: Start difference. First operand has 204 places, 190 transitions, 545 flow. Second operand 3 states and 531 transitions. [2022-11-20 09:29:44,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 189 transitions, 562 flow [2022-11-20 09:29:44,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 189 transitions, 554 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-20 09:29:44,692 INFO L231 Difference]: Finished difference. Result has 203 places, 187 transitions, 523 flow [2022-11-20 09:29:44,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=523, PETRI_PLACES=203, PETRI_TRANSITIONS=187} [2022-11-20 09:29:44,693 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 25 predicate places. [2022-11-20 09:29:44,694 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 187 transitions, 523 flow [2022-11-20 09:29:44,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 09:29:44,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:44,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:29:44,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:29:44,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:44,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:44,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1108562553, now seen corresponding path program 1 times [2022-11-20 09:29:44,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:44,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580453009] [2022-11-20 09:29:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:44,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:44,953 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 09:29:44,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:44,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580453009] [2022-11-20 09:29:44,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580453009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:44,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:44,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:29:44,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167760930] [2022-11-20 09:29:44,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:44,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:44,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:44,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:44,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:29:44,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-20 09:29:44,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 187 transitions, 523 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states 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 09:29:44,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:44,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-20 09:29:44,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:45,424 INFO L130 PetriNetUnfolder]: 101/1483 cut-off events. [2022-11-20 09:29:45,424 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-11-20 09:29:45,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2227 conditions, 1483 events. 101/1483 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8844 event pairs, 36 based on Foata normal form. 6/1423 useless extension candidates. Maximal degree in co-relation 1372. Up to 143 conditions per place. [2022-11-20 09:29:45,439 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 51 selfloop transitions, 9 changer transitions 0/217 dead transitions. [2022-11-20 09:29:45,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 217 transitions, 726 flow [2022-11-20 09:29:45,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:29:45,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 09:29:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1341 transitions. [2022-11-20 09:29:45,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8685233160621761 [2022-11-20 09:29:45,445 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1341 transitions. [2022-11-20 09:29:45,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1341 transitions. [2022-11-20 09:29:45,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:45,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1341 transitions. [2022-11-20 09:29:45,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.625) internal successors, (1341), 8 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states 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 09:29:45,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states 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 09:29:45,455 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states 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 09:29:45,456 INFO L175 Difference]: Start difference. First operand has 203 places, 187 transitions, 523 flow. Second operand 8 states and 1341 transitions. [2022-11-20 09:29:45,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 217 transitions, 726 flow [2022-11-20 09:29:45,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 217 transitions, 722 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:29:45,463 INFO L231 Difference]: Finished difference. Result has 212 places, 191 transitions, 570 flow [2022-11-20 09:29:45,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=570, PETRI_PLACES=212, PETRI_TRANSITIONS=191} [2022-11-20 09:29:45,468 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 34 predicate places. [2022-11-20 09:29:45,468 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 191 transitions, 570 flow [2022-11-20 09:29:45,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states 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 09:29:45,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:45,469 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:45,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:29:45,470 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:45,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:45,470 INFO L85 PathProgramCache]: Analyzing trace with hash -6776004, now seen corresponding path program 1 times [2022-11-20 09:29:45,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:45,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185573468] [2022-11-20 09:29:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:45,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:45,719 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 09:29:45,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:45,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185573468] [2022-11-20 09:29:45,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185573468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:45,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:45,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:29:45,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3381676] [2022-11-20 09:29:45,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:45,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:45,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:45,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:45,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:29:45,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-20 09:29:45,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 191 transitions, 570 flow. Second operand has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 09:29:45,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:45,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-20 09:29:45,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:46,410 INFO L130 PetriNetUnfolder]: 150/2145 cut-off events. [2022-11-20 09:29:46,410 INFO L131 PetriNetUnfolder]: For 399/399 co-relation queries the response was YES. [2022-11-20 09:29:46,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3315 conditions, 2145 events. 150/2145 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 14314 event pairs, 41 based on Foata normal form. 8/2074 useless extension candidates. Maximal degree in co-relation 2723. Up to 199 conditions per place. [2022-11-20 09:29:46,429 INFO L137 encePairwiseOnDemand]: 183/193 looper letters, 53 selfloop transitions, 14 changer transitions 0/224 dead transitions. [2022-11-20 09:29:46,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 224 transitions, 823 flow [2022-11-20 09:29:46,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:29:46,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 09:29:46,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1340 transitions. [2022-11-20 09:29:46,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8678756476683938 [2022-11-20 09:29:46,434 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1340 transitions. [2022-11-20 09:29:46,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1340 transitions. [2022-11-20 09:29:46,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:46,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1340 transitions. [2022-11-20 09:29:46,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.5) internal successors, (1340), 8 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states 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 09:29:46,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states 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 09:29:46,445 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states 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 09:29:46,446 INFO L175 Difference]: Start difference. First operand has 212 places, 191 transitions, 570 flow. Second operand 8 states and 1340 transitions. [2022-11-20 09:29:46,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 224 transitions, 823 flow [2022-11-20 09:29:46,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 224 transitions, 815 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:29:46,455 INFO L231 Difference]: Finished difference. Result has 220 places, 200 transitions, 684 flow [2022-11-20 09:29:46,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=684, PETRI_PLACES=220, PETRI_TRANSITIONS=200} [2022-11-20 09:29:46,457 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 42 predicate places. [2022-11-20 09:29:46,457 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 200 transitions, 684 flow [2022-11-20 09:29:46,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 09:29:46,458 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:46,460 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:46,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:29:46,462 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1641449039, now seen corresponding path program 1 times [2022-11-20 09:29:46,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:46,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570883989] [2022-11-20 09:29:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:46,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:46,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:46,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570883989] [2022-11-20 09:29:46,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570883989] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:46,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495467996] [2022-11-20 09:29:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:46,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:46,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:46,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:46,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:29:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:46,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:29:46,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:47,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:47,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495467996] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:47,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:47,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 09:29:47,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365878132] [2022-11-20 09:29:47,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:47,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:29:47,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:47,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:29:47,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:29:47,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 193 [2022-11-20 09:29:47,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 200 transitions, 684 flow. Second operand has 12 states, 12 states have (on average 169.25) internal successors, (2031), 12 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states 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 09:29:47,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:47,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 193 [2022-11-20 09:29:47,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:48,448 INFO L130 PetriNetUnfolder]: 170/2997 cut-off events. [2022-11-20 09:29:48,448 INFO L131 PetriNetUnfolder]: For 1042/1048 co-relation queries the response was YES. [2022-11-20 09:29:48,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4690 conditions, 2997 events. 170/2997 cut-off events. For 1042/1048 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 20345 event pairs, 42 based on Foata normal form. 24/2906 useless extension candidates. Maximal degree in co-relation 3905. Up to 117 conditions per place. [2022-11-20 09:29:48,475 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 65 selfloop transitions, 26 changer transitions 0/259 dead transitions. [2022-11-20 09:29:48,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 259 transitions, 1093 flow [2022-11-20 09:29:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:29:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 09:29:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3075 transitions. [2022-11-20 09:29:48,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.885146804835924 [2022-11-20 09:29:48,484 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3075 transitions. [2022-11-20 09:29:48,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3075 transitions. [2022-11-20 09:29:48,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:48,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3075 transitions. [2022-11-20 09:29:48,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.83333333333334) internal successors, (3075), 18 states have internal predecessors, (3075), 0 states have call successors, (0), 0 states 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 09:29:48,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 193.0) internal successors, (3667), 19 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states 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 09:29:48,506 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 193.0) internal successors, (3667), 19 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states 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 09:29:48,506 INFO L175 Difference]: Start difference. First operand has 220 places, 200 transitions, 684 flow. Second operand 18 states and 3075 transitions. [2022-11-20 09:29:48,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 259 transitions, 1093 flow [2022-11-20 09:29:48,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 259 transitions, 1085 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:29:48,517 INFO L231 Difference]: Finished difference. Result has 238 places, 216 transitions, 854 flow [2022-11-20 09:29:48,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=854, PETRI_PLACES=238, PETRI_TRANSITIONS=216} [2022-11-20 09:29:48,519 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 60 predicate places. [2022-11-20 09:29:48,519 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 216 transitions, 854 flow [2022-11-20 09:29:48,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.25) internal successors, (2031), 12 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states 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 09:29:48,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:48,521 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:48,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:48,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 09:29:48,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:48,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:48,733 INFO L85 PathProgramCache]: Analyzing trace with hash -654686814, now seen corresponding path program 1 times [2022-11-20 09:29:48,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:48,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494620260] [2022-11-20 09:29:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:48,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:48,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494620260] [2022-11-20 09:29:48,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494620260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:48,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937914345] [2022-11-20 09:29:48,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:48,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:48,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:48,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:48,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:29:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:49,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:29:49,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:49,338 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:49,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:49,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937914345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:49,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:49,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 09:29:49,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093692506] [2022-11-20 09:29:49,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:49,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:49,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:49,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:49,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:49,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 193 [2022-11-20 09:29:49,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 216 transitions, 854 flow. Second operand has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 09:29:49,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:49,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 193 [2022-11-20 09:29:49,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:50,407 INFO L130 PetriNetUnfolder]: 179/3194 cut-off events. [2022-11-20 09:29:50,407 INFO L131 PetriNetUnfolder]: For 1684/1690 co-relation queries the response was YES. [2022-11-20 09:29:50,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 3194 events. 179/3194 cut-off events. For 1684/1690 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 22013 event pairs, 43 based on Foata normal form. 30/3099 useless extension candidates. Maximal degree in co-relation 4267. Up to 245 conditions per place. [2022-11-20 09:29:50,446 INFO L137 encePairwiseOnDemand]: 185/193 looper letters, 49 selfloop transitions, 19 changer transitions 0/236 dead transitions. [2022-11-20 09:29:50,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 236 transitions, 1079 flow [2022-11-20 09:29:50,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:29:50,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 09:29:50,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1375 transitions. [2022-11-20 09:29:50,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8905440414507773 [2022-11-20 09:29:50,451 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1375 transitions. [2022-11-20 09:29:50,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1375 transitions. [2022-11-20 09:29:50,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:50,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1375 transitions. [2022-11-20 09:29:50,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 171.875) internal successors, (1375), 8 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states 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 09:29:50,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states 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 09:29:50,556 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states 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 09:29:50,556 INFO L175 Difference]: Start difference. First operand has 238 places, 216 transitions, 854 flow. Second operand 8 states and 1375 transitions. [2022-11-20 09:29:50,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 236 transitions, 1079 flow [2022-11-20 09:29:50,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 236 transitions, 1022 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-11-20 09:29:50,569 INFO L231 Difference]: Finished difference. Result has 240 places, 218 transitions, 899 flow [2022-11-20 09:29:50,571 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=899, PETRI_PLACES=240, PETRI_TRANSITIONS=218} [2022-11-20 09:29:50,572 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 62 predicate places. [2022-11-20 09:29:50,572 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 218 transitions, 899 flow [2022-11-20 09:29:50,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 09:29:50,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:50,573 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:50,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:50,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 09:29:50,779 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:50,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:50,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1840412294, now seen corresponding path program 1 times [2022-11-20 09:29:50,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:50,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109079753] [2022-11-20 09:29:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:50,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:50,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:50,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109079753] [2022-11-20 09:29:50,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109079753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:50,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:50,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:29:50,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604463958] [2022-11-20 09:29:50,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:50,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:29:50,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:50,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:29:50,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:29:50,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-20 09:29:50,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 218 transitions, 899 flow. Second operand has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states 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 09:29:50,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:50,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-20 09:29:50,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:51,692 INFO L130 PetriNetUnfolder]: 131/2839 cut-off events. [2022-11-20 09:29:51,692 INFO L131 PetriNetUnfolder]: For 1260/1260 co-relation queries the response was YES. [2022-11-20 09:29:51,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4377 conditions, 2839 events. 131/2839 cut-off events. For 1260/1260 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 17863 event pairs, 29 based on Foata normal form. 16/2746 useless extension candidates. Maximal degree in co-relation 3786. Up to 95 conditions per place. [2022-11-20 09:29:51,729 INFO L137 encePairwiseOnDemand]: 187/193 looper letters, 12 selfloop transitions, 8 changer transitions 0/221 dead transitions. [2022-11-20 09:29:51,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 221 transitions, 949 flow [2022-11-20 09:29:51,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:51,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:29:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 873 transitions. [2022-11-20 09:29:51,733 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9046632124352332 [2022-11-20 09:29:51,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 873 transitions. [2022-11-20 09:29:51,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 873 transitions. [2022-11-20 09:29:51,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:51,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 873 transitions. [2022-11-20 09:29:51,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states 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 09:29:51,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 09:29:51,739 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states 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 09:29:51,740 INFO L175 Difference]: Start difference. First operand has 240 places, 218 transitions, 899 flow. Second operand 5 states and 873 transitions. [2022-11-20 09:29:51,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 221 transitions, 949 flow [2022-11-20 09:29:51,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 221 transitions, 933 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-20 09:29:51,756 INFO L231 Difference]: Finished difference. Result has 241 places, 218 transitions, 903 flow [2022-11-20 09:29:51,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=903, PETRI_PLACES=241, PETRI_TRANSITIONS=218} [2022-11-20 09:29:51,758 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 63 predicate places. [2022-11-20 09:29:51,758 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 218 transitions, 903 flow [2022-11-20 09:29:51,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states 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 09:29:51,759 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:51,759 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:51,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:29:51,760 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:51,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1218205742, now seen corresponding path program 1 times [2022-11-20 09:29:51,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:51,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165514394] [2022-11-20 09:29:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:51,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:51,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:51,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165514394] [2022-11-20 09:29:51,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165514394] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:51,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971258073] [2022-11-20 09:29:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:51,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:51,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:51,964 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:51,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:29:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:52,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:29:52,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:52,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:52,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971258073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:52,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:29:52,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 09:29:52,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892875280] [2022-11-20 09:29:52,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:52,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:52,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:52,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:52,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:52,231 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-20 09:29:52,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 218 transitions, 903 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states 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 09:29:52,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:52,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-20 09:29:52,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:52,991 INFO L130 PetriNetUnfolder]: 126/2973 cut-off events. [2022-11-20 09:29:52,991 INFO L131 PetriNetUnfolder]: For 1344/1344 co-relation queries the response was YES. [2022-11-20 09:29:53,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 2973 events. 126/2973 cut-off events. For 1344/1344 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 18975 event pairs, 36 based on Foata normal form. 24/2883 useless extension candidates. Maximal degree in co-relation 4131. Up to 140 conditions per place. [2022-11-20 09:29:53,024 INFO L137 encePairwiseOnDemand]: 189/193 looper letters, 13 selfloop transitions, 5 changer transitions 0/219 dead transitions. [2022-11-20 09:29:53,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 219 transitions, 943 flow [2022-11-20 09:29:53,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:29:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:29:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 699 transitions. [2022-11-20 09:29:53,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.905440414507772 [2022-11-20 09:29:53,028 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 699 transitions. [2022-11-20 09:29:53,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 699 transitions. [2022-11-20 09:29:53,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:53,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 699 transitions. [2022-11-20 09:29:53,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states 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 09:29:53,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states 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 09:29:53,034 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states 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 09:29:53,034 INFO L175 Difference]: Start difference. First operand has 241 places, 218 transitions, 903 flow. Second operand 4 states and 699 transitions. [2022-11-20 09:29:53,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 219 transitions, 943 flow [2022-11-20 09:29:53,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 219 transitions, 931 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:29:53,051 INFO L231 Difference]: Finished difference. Result has 240 places, 217 transitions, 897 flow [2022-11-20 09:29:53,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=897, PETRI_PLACES=240, PETRI_TRANSITIONS=217} [2022-11-20 09:29:53,053 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 62 predicate places. [2022-11-20 09:29:53,054 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 217 transitions, 897 flow [2022-11-20 09:29:53,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states 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 09:29:53,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:53,055 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:53,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:53,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 09:29:53,261 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:53,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:53,261 INFO L85 PathProgramCache]: Analyzing trace with hash 751115926, now seen corresponding path program 1 times [2022-11-20 09:29:53,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:53,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178959692] [2022-11-20 09:29:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:53,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:53,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:53,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178959692] [2022-11-20 09:29:53,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178959692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:53,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946578405] [2022-11-20 09:29:53,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:53,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:53,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:53,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:53,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:29:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:53,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:29:53,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:53,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:54,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946578405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:54,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:54,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 09:29:54,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217109895] [2022-11-20 09:29:54,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:54,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:29:54,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:54,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:29:54,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:29:54,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-20 09:29:54,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 217 transitions, 897 flow. Second operand has 16 states, 16 states have (on average 163.5) internal successors, (2616), 16 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states 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 09:29:54,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:54,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-20 09:29:54,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:55,594 INFO L130 PetriNetUnfolder]: 244/3554 cut-off events. [2022-11-20 09:29:55,594 INFO L131 PetriNetUnfolder]: For 2064/2064 co-relation queries the response was YES. [2022-11-20 09:29:55,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5956 conditions, 3554 events. 244/3554 cut-off events. For 2064/2064 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 26320 event pairs, 62 based on Foata normal form. 38/3454 useless extension candidates. Maximal degree in co-relation 4948. Up to 130 conditions per place. [2022-11-20 09:29:55,638 INFO L137 encePairwiseOnDemand]: 180/193 looper letters, 81 selfloop transitions, 47 changer transitions 0/284 dead transitions. [2022-11-20 09:29:55,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 284 transitions, 1399 flow [2022-11-20 09:29:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 09:29:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 09:29:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3788 transitions. [2022-11-20 09:29:55,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.853345348051363 [2022-11-20 09:29:55,647 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3788 transitions. [2022-11-20 09:29:55,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3788 transitions. [2022-11-20 09:29:55,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:55,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3788 transitions. [2022-11-20 09:29:55,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 164.69565217391303) internal successors, (3788), 23 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states 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 09:29:55,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 193.0) internal successors, (4632), 24 states have internal predecessors, (4632), 0 states have call successors, (0), 0 states 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 09:29:55,669 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 193.0) internal successors, (4632), 24 states have internal predecessors, (4632), 0 states have call successors, (0), 0 states 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 09:29:55,669 INFO L175 Difference]: Start difference. First operand has 240 places, 217 transitions, 897 flow. Second operand 23 states and 3788 transitions. [2022-11-20 09:29:55,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 284 transitions, 1399 flow [2022-11-20 09:29:55,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 284 transitions, 1389 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:29:55,684 INFO L231 Difference]: Finished difference. Result has 263 places, 229 transitions, 1097 flow [2022-11-20 09:29:55,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1097, PETRI_PLACES=263, PETRI_TRANSITIONS=229} [2022-11-20 09:29:55,686 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 85 predicate places. [2022-11-20 09:29:55,686 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 229 transitions, 1097 flow [2022-11-20 09:29:55,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 163.5) internal successors, (2616), 16 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states 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 09:29:55,687 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:55,687 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:29:55,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:55,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 09:29:55,893 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:55,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:55,894 INFO L85 PathProgramCache]: Analyzing trace with hash -763388596, now seen corresponding path program 1 times [2022-11-20 09:29:55,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:55,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836093016] [2022-11-20 09:29:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:55,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:56,172 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:56,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:56,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836093016] [2022-11-20 09:29:56,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836093016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:56,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26787525] [2022-11-20 09:29:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:56,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:56,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:56,174 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:56,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:29:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:56,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:29:56,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:56,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:56,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26787525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:56,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:56,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-20 09:29:56,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37612488] [2022-11-20 09:29:56,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:56,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:29:56,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:29:56,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:29:56,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-20 09:29:56,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 229 transitions, 1097 flow. Second operand has 14 states, 14 states have (on average 164.14285714285714) internal successors, (2298), 14 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states 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 09:29:56,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:56,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-20 09:29:56,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:59,083 INFO L130 PetriNetUnfolder]: 391/5382 cut-off events. [2022-11-20 09:29:59,083 INFO L131 PetriNetUnfolder]: For 3617/3617 co-relation queries the response was YES. [2022-11-20 09:29:59,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9197 conditions, 5382 events. 391/5382 cut-off events. For 3617/3617 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 42533 event pairs, 58 based on Foata normal form. 53/5233 useless extension candidates. Maximal degree in co-relation 8162. Up to 276 conditions per place. [2022-11-20 09:29:59,139 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 118 selfloop transitions, 78 changer transitions 0/352 dead transitions. [2022-11-20 09:29:59,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 352 transitions, 2347 flow [2022-11-20 09:29:59,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 09:29:59,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 09:29:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3965 transitions. [2022-11-20 09:29:59,148 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8560017271157168 [2022-11-20 09:29:59,148 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3965 transitions. [2022-11-20 09:29:59,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3965 transitions. [2022-11-20 09:29:59,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:59,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3965 transitions. [2022-11-20 09:29:59,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 165.20833333333334) internal successors, (3965), 24 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states 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 09:29:59,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 193.0) internal successors, (4825), 25 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states 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 09:29:59,173 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 193.0) internal successors, (4825), 25 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states 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 09:29:59,173 INFO L175 Difference]: Start difference. First operand has 263 places, 229 transitions, 1097 flow. Second operand 24 states and 3965 transitions. [2022-11-20 09:29:59,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 352 transitions, 2347 flow [2022-11-20 09:29:59,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 352 transitions, 2170 flow, removed 78 selfloop flow, removed 5 redundant places. [2022-11-20 09:29:59,205 INFO L231 Difference]: Finished difference. Result has 290 places, 283 transitions, 1833 flow [2022-11-20 09:29:59,206 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1833, PETRI_PLACES=290, PETRI_TRANSITIONS=283} [2022-11-20 09:29:59,206 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 112 predicate places. [2022-11-20 09:29:59,206 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 283 transitions, 1833 flow [2022-11-20 09:29:59,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 164.14285714285714) internal successors, (2298), 14 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states 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 09:29:59,207 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:59,208 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:59,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:59,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:59,415 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:29:59,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:59,415 INFO L85 PathProgramCache]: Analyzing trace with hash -144804814, now seen corresponding path program 2 times [2022-11-20 09:29:59,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:59,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205964661] [2022-11-20 09:29:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:59,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:00,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:00,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205964661] [2022-11-20 09:30:00,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205964661] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:00,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516107218] [2022-11-20 09:30:00,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:30:00,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:00,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:00,003 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:00,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:30:00,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:30:00,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:30:00,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 09:30:00,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:00,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:01,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516107218] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:01,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:30:01,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-20 09:30:01,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266900627] [2022-11-20 09:30:01,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:01,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 09:30:01,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:01,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 09:30:01,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-20 09:30:01,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 193 [2022-11-20 09:30:01,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 283 transitions, 1833 flow. Second operand has 24 states, 24 states have (on average 169.625) internal successors, (4071), 24 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states 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 09:30:01,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:30:01,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 193 [2022-11-20 09:30:01,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:30:05,098 INFO L130 PetriNetUnfolder]: 458/8017 cut-off events. [2022-11-20 09:30:05,098 INFO L131 PetriNetUnfolder]: For 7924/7927 co-relation queries the response was YES. [2022-11-20 09:30:05,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13951 conditions, 8017 events. 458/8017 cut-off events. For 7924/7927 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 59606 event pairs, 128 based on Foata normal form. 48/7740 useless extension candidates. Maximal degree in co-relation 12917. Up to 405 conditions per place. [2022-11-20 09:30:05,176 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 176 selfloop transitions, 70 changer transitions 0/422 dead transitions. [2022-11-20 09:30:05,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 422 transitions, 3156 flow [2022-11-20 09:30:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 09:30:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 09:30:05,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5656 transitions. [2022-11-20 09:30:05,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8880514994504631 [2022-11-20 09:30:05,188 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5656 transitions. [2022-11-20 09:30:05,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5656 transitions. [2022-11-20 09:30:05,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:30:05,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5656 transitions. [2022-11-20 09:30:05,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 171.3939393939394) internal successors, (5656), 33 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states 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 09:30:05,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 193.0) internal successors, (6562), 34 states have internal predecessors, (6562), 0 states have call successors, (0), 0 states 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 09:30:05,220 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 193.0) internal successors, (6562), 34 states have internal predecessors, (6562), 0 states have call successors, (0), 0 states 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 09:30:05,220 INFO L175 Difference]: Start difference. First operand has 290 places, 283 transitions, 1833 flow. Second operand 33 states and 5656 transitions. [2022-11-20 09:30:05,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 422 transitions, 3156 flow [2022-11-20 09:30:05,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 422 transitions, 3028 flow, removed 60 selfloop flow, removed 3 redundant places. [2022-11-20 09:30:05,276 INFO L231 Difference]: Finished difference. Result has 326 places, 317 transitions, 2349 flow [2022-11-20 09:30:05,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2349, PETRI_PLACES=326, PETRI_TRANSITIONS=317} [2022-11-20 09:30:05,277 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 148 predicate places. [2022-11-20 09:30:05,278 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 317 transitions, 2349 flow [2022-11-20 09:30:05,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 169.625) internal successors, (4071), 24 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states 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 09:30:05,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:30:05,279 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:05,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:05,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 09:30:05,486 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 09:30:05,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:05,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1856852446, now seen corresponding path program 1 times [2022-11-20 09:30:05,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:05,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750674409] [2022-11-20 09:30:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:05,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:06,041 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 09:30:06,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:06,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750674409] [2022-11-20 09:30:06,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750674409] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:06,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150717911] [2022-11-20 09:30:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:06,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:06,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:06,044 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:06,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:30:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:06,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 09:30:06,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 09:30:06,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 09:30:07,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150717911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:07,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:30:07,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-20 09:30:07,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752203525] [2022-11-20 09:30:07,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:07,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 09:30:07,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:07,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 09:30:07,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:30:07,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-20 09:30:07,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 317 transitions, 2349 flow. Second operand has 18 states, 18 states have (on average 164.11111111111111) internal successors, (2954), 18 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states 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 09:30:07,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:30:07,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-20 09:30:07,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:30:12,227 INFO L130 PetriNetUnfolder]: 897/12187 cut-off events. [2022-11-20 09:30:12,228 INFO L131 PetriNetUnfolder]: For 12075/12075 co-relation queries the response was YES. [2022-11-20 09:30:12,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21931 conditions, 12187 events. 897/12187 cut-off events. For 12075/12075 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 109699 event pairs, 211 based on Foata normal form. 23/11736 useless extension candidates. Maximal degree in co-relation 20744. Up to 553 conditions per place. [2022-11-20 09:30:12,342 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 190 selfloop transitions, 204 changer transitions 0/550 dead transitions. [2022-11-20 09:30:12,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 550 transitions, 5029 flow [2022-11-20 09:30:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 09:30:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 09:30:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6254 transitions. [2022-11-20 09:30:12,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8527406599400055 [2022-11-20 09:30:12,351 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6254 transitions. [2022-11-20 09:30:12,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6254 transitions. [2022-11-20 09:30:12,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:30:12,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6254 transitions. [2022-11-20 09:30:12,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 164.57894736842104) internal successors, (6254), 38 states have internal predecessors, (6254), 0 states have call successors, (0), 0 states 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 09:30:12,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 193.0) internal successors, (7527), 39 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states 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 09:30:12,379 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 193.0) internal successors, (7527), 39 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states 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 09:30:12,380 INFO L175 Difference]: Start difference. First operand has 326 places, 317 transitions, 2349 flow. Second operand 38 states and 6254 transitions. [2022-11-20 09:30:12,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 550 transitions, 5029 flow [2022-11-20 09:30:12,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 550 transitions, 4907 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-11-20 09:30:12,471 INFO L231 Difference]: Finished difference. Result has 365 places, 436 transitions, 4404 flow [2022-11-20 09:30:12,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4404, PETRI_PLACES=365, PETRI_TRANSITIONS=436} [2022-11-20 09:30:12,472 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 187 predicate places. [2022-11-20 09:30:12,473 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 436 transitions, 4404 flow [2022-11-20 09:30:12,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 164.11111111111111) internal successors, (2954), 18 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states 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 09:30:12,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:30:12,474 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:30:12,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:12,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 09:30:12,682 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:30:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1023656836, now seen corresponding path program 2 times [2022-11-20 09:30:12,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:12,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509166337] [2022-11-20 09:30:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:12,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:13,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:13,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509166337] [2022-11-20 09:30:13,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509166337] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:13,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500184881] [2022-11-20 09:30:13,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:30:13,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:13,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:13,359 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:13,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:30:13,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:30:13,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:30:13,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 09:30:13,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:14,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:14,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500184881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:14,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:30:14,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2022-11-20 09:30:14,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082935766] [2022-11-20 09:30:14,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:14,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 09:30:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:14,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 09:30:14,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-11-20 09:30:14,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-20 09:30:14,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 436 transitions, 4404 flow. Second operand has 26 states, 26 states have (on average 164.07692307692307) internal successors, (4266), 26 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states 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 09:30:14,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:30:14,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-20 09:30:14,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:30:23,322 INFO L130 PetriNetUnfolder]: 1418/18164 cut-off events. [2022-11-20 09:30:23,322 INFO L131 PetriNetUnfolder]: For 22949/22949 co-relation queries the response was YES. [2022-11-20 09:30:23,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33620 conditions, 18164 events. 1418/18164 cut-off events. For 22949/22949 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 184162 event pairs, 195 based on Foata normal form. 90/17575 useless extension candidates. Maximal degree in co-relation 32395. Up to 804 conditions per place. [2022-11-20 09:30:23,508 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 308 selfloop transitions, 350 changer transitions 0/814 dead transitions. [2022-11-20 09:30:23,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 814 transitions, 9616 flow [2022-11-20 09:30:23,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-20 09:30:23,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-20 09:30:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8409 transitions. [2022-11-20 09:30:23,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8543127095397745 [2022-11-20 09:30:23,520 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8409 transitions. [2022-11-20 09:30:23,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8409 transitions. [2022-11-20 09:30:23,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:30:23,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8409 transitions. [2022-11-20 09:30:23,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 164.88235294117646) internal successors, (8409), 51 states have internal predecessors, (8409), 0 states have call successors, (0), 0 states 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 09:30:23,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 193.0) internal successors, (10036), 52 states have internal predecessors, (10036), 0 states have call successors, (0), 0 states 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 09:30:23,559 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 193.0) internal successors, (10036), 52 states have internal predecessors, (10036), 0 states have call successors, (0), 0 states 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 09:30:23,559 INFO L175 Difference]: Start difference. First operand has 365 places, 436 transitions, 4404 flow. Second operand 51 states and 8409 transitions. [2022-11-20 09:30:23,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 814 transitions, 9616 flow [2022-11-20 09:30:23,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 814 transitions, 9382 flow, removed 113 selfloop flow, removed 3 redundant places. [2022-11-20 09:30:23,751 INFO L231 Difference]: Finished difference. Result has 425 places, 622 transitions, 8061 flow [2022-11-20 09:30:23,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=4294, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8061, PETRI_PLACES=425, PETRI_TRANSITIONS=622} [2022-11-20 09:30:23,752 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 247 predicate places. [2022-11-20 09:30:23,753 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 622 transitions, 8061 flow [2022-11-20 09:30:23,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 164.07692307692307) internal successors, (4266), 26 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states 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 09:30:23,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:30:23,755 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:23,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:23,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 09:30:23,961 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:30:23,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:23,962 INFO L85 PathProgramCache]: Analyzing trace with hash -51593382, now seen corresponding path program 1 times [2022-11-20 09:30:23,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:23,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265532707] [2022-11-20 09:30:23,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:23,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 09:30:24,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:24,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265532707] [2022-11-20 09:30:24,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265532707] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:24,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562802003] [2022-11-20 09:30:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:24,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:24,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:24,789 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:24,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:30:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:25,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 09:30:25,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 09:30:25,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 09:30:26,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562802003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:26,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:30:26,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2022-11-20 09:30:26,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454861965] [2022-11-20 09:30:26,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:26,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 09:30:26,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:26,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 09:30:26,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-11-20 09:30:26,269 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-20 09:30:26,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 622 transitions, 8061 flow. Second operand has 24 states, 24 states have (on average 164.5) internal successors, (3948), 24 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states 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 09:30:26,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:30:26,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-20 09:30:26,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:30:39,594 INFO L130 PetriNetUnfolder]: 2240/27502 cut-off events. [2022-11-20 09:30:39,595 INFO L131 PetriNetUnfolder]: For 44823/44823 co-relation queries the response was YES. [2022-11-20 09:30:40,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52493 conditions, 27502 events. 2240/27502 cut-off events. For 44823/44823 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 308001 event pairs, 210 based on Foata normal form. 134/26613 useless extension candidates. Maximal degree in co-relation 51600. Up to 1292 conditions per place. [2022-11-20 09:30:40,126 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 196 selfloop transitions, 719 changer transitions 0/1071 dead transitions. [2022-11-20 09:30:40,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1071 transitions, 16172 flow [2022-11-20 09:30:40,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 09:30:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 09:30:40,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 6409 transitions. [2022-11-20 09:30:40,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8514680483592401 [2022-11-20 09:30:40,138 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 6409 transitions. [2022-11-20 09:30:40,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 6409 transitions. [2022-11-20 09:30:40,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:30:40,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 6409 transitions. [2022-11-20 09:30:40,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 164.33333333333334) internal successors, (6409), 39 states have internal predecessors, (6409), 0 states have call successors, (0), 0 states 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 09:30:40,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 193.0) internal successors, (7720), 40 states have internal predecessors, (7720), 0 states have call successors, (0), 0 states 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 09:30:40,174 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 193.0) internal successors, (7720), 40 states have internal predecessors, (7720), 0 states have call successors, (0), 0 states 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 09:30:40,175 INFO L175 Difference]: Start difference. First operand has 425 places, 622 transitions, 8061 flow. Second operand 39 states and 6409 transitions. [2022-11-20 09:30:40,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1071 transitions, 16172 flow [2022-11-20 09:30:40,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 1071 transitions, 14983 flow, removed 357 selfloop flow, removed 16 redundant places. [2022-11-20 09:30:40,501 INFO L231 Difference]: Finished difference. Result has 444 places, 965 transitions, 14572 flow [2022-11-20 09:30:40,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=7102, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14572, PETRI_PLACES=444, PETRI_TRANSITIONS=965} [2022-11-20 09:30:40,502 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 266 predicate places. [2022-11-20 09:30:40,503 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 965 transitions, 14572 flow [2022-11-20 09:30:40,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 164.5) internal successors, (3948), 24 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states 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 09:30:40,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:30:40,505 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:40,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:40,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:40,712 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:30:40,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:40,712 INFO L85 PathProgramCache]: Analyzing trace with hash -105544879, now seen corresponding path program 1 times [2022-11-20 09:30:40,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:40,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859538652] [2022-11-20 09:30:40,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:40,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 09:30:41,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:41,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859538652] [2022-11-20 09:30:41,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859538652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:41,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811808662] [2022-11-20 09:30:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:41,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:41,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:41,596 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:41,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:30:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:41,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 09:30:41,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 09:30:42,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 09:30:43,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811808662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:43,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:30:43,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-20 09:30:43,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102401922] [2022-11-20 09:30:43,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:43,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 09:30:43,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:43,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 09:30:43,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-20 09:30:43,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-20 09:30:43,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 965 transitions, 14572 flow. Second operand has 22 states, 22 states have (on average 164.45454545454547) internal successors, (3618), 22 states have internal predecessors, (3618), 0 states have call successors, (0), 0 states 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 09:30:43,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:30:43,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-20 09:30:43,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:06,309 INFO L130 PetriNetUnfolder]: 3411/40515 cut-off events. [2022-11-20 09:31:06,310 INFO L131 PetriNetUnfolder]: For 72495/72495 co-relation queries the response was YES. [2022-11-20 09:31:06,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79464 conditions, 40515 events. 3411/40515 cut-off events. For 72495/72495 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 493526 event pairs, 890 based on Foata normal form. 179/39156 useless extension candidates. Maximal degree in co-relation 78190. Up to 2104 conditions per place. [2022-11-20 09:31:07,085 INFO L137 encePairwiseOnDemand]: 182/193 looper letters, 245 selfloop transitions, 1190 changer transitions 0/1591 dead transitions. [2022-11-20 09:31:07,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1591 transitions, 26472 flow [2022-11-20 09:31:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 09:31:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 09:31:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5448 transitions. [2022-11-20 09:31:07,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8553933113518606 [2022-11-20 09:31:07,095 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5448 transitions. [2022-11-20 09:31:07,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5448 transitions. [2022-11-20 09:31:07,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:07,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5448 transitions. [2022-11-20 09:31:07,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 165.0909090909091) internal successors, (5448), 33 states have internal predecessors, (5448), 0 states have call successors, (0), 0 states 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 09:31:07,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 193.0) internal successors, (6562), 34 states have internal predecessors, (6562), 0 states have call successors, (0), 0 states 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 09:31:07,118 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 193.0) internal successors, (6562), 34 states have internal predecessors, (6562), 0 states have call successors, (0), 0 states 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 09:31:07,118 INFO L175 Difference]: Start difference. First operand has 444 places, 965 transitions, 14572 flow. Second operand 33 states and 5448 transitions. [2022-11-20 09:31:07,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1591 transitions, 26472 flow [2022-11-20 09:31:07,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1591 transitions, 25594 flow, removed 408 selfloop flow, removed 5 redundant places. [2022-11-20 09:31:07,788 INFO L231 Difference]: Finished difference. Result has 468 places, 1452 transitions, 25185 flow [2022-11-20 09:31:07,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=13639, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=710, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=25185, PETRI_PLACES=468, PETRI_TRANSITIONS=1452} [2022-11-20 09:31:07,790 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 290 predicate places. [2022-11-20 09:31:07,791 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1452 transitions, 25185 flow [2022-11-20 09:31:07,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 164.45454545454547) internal successors, (3618), 22 states have internal predecessors, (3618), 0 states have call successors, (0), 0 states 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 09:31:07,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:07,792 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:31:07,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-20 09:31:07,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:07,999 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 09:31:08,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:08,000 INFO L85 PathProgramCache]: Analyzing trace with hash -871576844, now seen corresponding path program 2 times [2022-11-20 09:31:08,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:08,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421621294] [2022-11-20 09:31:08,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:08,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 09:31:09,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:09,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421621294] [2022-11-20 09:31:09,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421621294] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:09,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917387676] [2022-11-20 09:31:09,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:31:09,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:09,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:09,359 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:09,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4523bbf4-0cfc-4376-8b57-769ea73cff0c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 09:31:09,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:31:09,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:31:09,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:31:09,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 09:31:10,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:11,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 09:31:11,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917387676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:11,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:31:11,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 33 [2022-11-20 09:31:11,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338828973] [2022-11-20 09:31:11,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:11,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 09:31:11,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:11,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 09:31:11,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 09:31:11,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-20 09:31:11,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1452 transitions, 25185 flow. Second operand has 34 states, 34 states have (on average 164.05882352941177) internal successors, (5578), 34 states have internal predecessors, (5578), 0 states have call successors, (0), 0 states 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 09:31:11,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:11,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-20 09:31:11,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand