./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/reorder_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c2478eeb4380713960dd80551c9d8e99269809d2bcbd284785221597bb31a471 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:29:52,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:29:52,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:29:52,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:29:52,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:29:52,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:29:52,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:29:52,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:29:52,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:29:52,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:29:52,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:29:52,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:29:52,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:29:52,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:29:52,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:29:52,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:29:52,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:29:52,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:29:52,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:29:52,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:29:52,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:29:52,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:29:52,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:29:52,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:29:52,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:29:52,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:29:52,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:29:52,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:29:52,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:29:52,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:29:52,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:29:52,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:29:52,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:29:52,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:29:52,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:29:52,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:29:52,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:29:52,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:29:52,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:29:52,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:29:52,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:29:52,184 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:29:52,208 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:29:52,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:29:52,209 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:29:52,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:29:52,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:29:52,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:29:52,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:29:52,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:29:52,211 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:29:52,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:29:52,211 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:29:52,211 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:29:52,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:29:52,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:29:52,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:29:52,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:29:52,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:29:52,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:29:52,213 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:29:52,213 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:29:52,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:29:52,213 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:29:52,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:29:52,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:29:52,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:29:52,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:29:52,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:29:52,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:29:52,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:29:52,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:29:52,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:29:52,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:29:52,215 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:29:52,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:29:52,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:29:52,216 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_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2478eeb4380713960dd80551c9d8e99269809d2bcbd284785221597bb31a471 [2022-11-21 16:29:52,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:29:52,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:29:52,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:29:52,488 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:29:52,488 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:29:52,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread/reorder_5.i [2022-11-21 16:29:55,642 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:29:55,941 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:29:55,942 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/sv-benchmarks/c/pthread/reorder_5.i [2022-11-21 16:29:55,961 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/data/569a2ecdd/6540f8e210894922960de6a27402f78b/FLAG8c6a5435c [2022-11-21 16:29:55,980 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/data/569a2ecdd/6540f8e210894922960de6a27402f78b [2022-11-21 16:29:55,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:29:55,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:29:55,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:29:55,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:29:55,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:29:55,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:29:55" (1/1) ... [2022-11-21 16:29:55,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5734f221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:55, skipping insertion in model container [2022-11-21 16:29:55,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:29:55" (1/1) ... [2022-11-21 16:29:56,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:29:56,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:29:56,739 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_3b34f4a2-4156-4078-9881-2e4a3b05c193/sv-benchmarks/c/pthread/reorder_5.i[59329,59342] [2022-11-21 16:29:56,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:29:56,750 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:29:56,802 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_3b34f4a2-4156-4078-9881-2e4a3b05c193/sv-benchmarks/c/pthread/reorder_5.i[59329,59342] [2022-11-21 16:29:56,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:29:56,902 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:29:56,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:56 WrapperNode [2022-11-21 16:29:56,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:29:56,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:29:56,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:29:56,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:29:56,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:56" (1/1) ... [2022-11-21 16:29:56,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:56" (1/1) ... [2022-11-21 16:29:56,958 INFO L138 Inliner]: procedures = 369, calls = 37, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 144 [2022-11-21 16:29:56,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:29:56,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:29:56,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:29:56,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:29:56,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:56" (1/1) ... [2022-11-21 16:29:56,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:56" (1/1) ... [2022-11-21 16:29:56,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:56" (1/1) ... [2022-11-21 16:29:56,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:56" (1/1) ... [2022-11-21 16:29:56,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:56" (1/1) ... [2022-11-21 16:29:56,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:56" (1/1) ... [2022-11-21 16:29:56,997 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:56" (1/1) ... [2022-11-21 16:29:56,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:56" (1/1) ... [2022-11-21 16:29:57,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:29:57,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:29:57,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:29:57,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:29:57,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:56" (1/1) ... [2022-11-21 16:29:57,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:29:57,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:29:57,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:29:57,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:29:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:29:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:29:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:29:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-21 16:29:57,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-21 16:29:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:29:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:29:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-21 16:29:57,143 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-21 16:29:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:29:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:29:57,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:29:57,151 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:29:57,404 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:29:57,407 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:29:57,675 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:29:57,684 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:29:57,684 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 16:29:57,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:29:57 BoogieIcfgContainer [2022-11-21 16:29:57,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:29:57,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:29:57,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:29:57,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:29:57,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:29:55" (1/3) ... [2022-11-21 16:29:57,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730b46fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:29:57, skipping insertion in model container [2022-11-21 16:29:57,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:29:56" (2/3) ... [2022-11-21 16:29:57,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730b46fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:29:57, skipping insertion in model container [2022-11-21 16:29:57,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:29:57" (3/3) ... [2022-11-21 16:29:57,697 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2022-11-21 16:29:57,706 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:29:57,718 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:29:57,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-21 16:29:57,718 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:29:57,791 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 16:29:57,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 173 transitions, 368 flow [2022-11-21 16:29:57,982 INFO L130 PetriNetUnfolder]: 35/368 cut-off events. [2022-11-21 16:29:57,982 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-21 16:29:57,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 368 events. 35/368 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1282 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2022-11-21 16:29:57,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 173 transitions, 368 flow [2022-11-21 16:29:58,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 173 transitions, 368 flow [2022-11-21 16:29:58,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:29:58,023 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;@5cd0737, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:29:58,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-21 16:29:58,047 INFO L130 PetriNetUnfolder]: 7/116 cut-off events. [2022-11-21 16:29:58,047 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:29:58,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:29:58,048 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] [2022-11-21 16:29:58,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:29:58,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:29:58,055 INFO L85 PathProgramCache]: Analyzing trace with hash -414908312, now seen corresponding path program 1 times [2022-11-21 16:29:58,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:29:58,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564676140] [2022-11-21 16:29:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:29:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:29:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:29:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:29:58,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:29:58,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564676140] [2022-11-21 16:29:58,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564676140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:29:58,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:29:58,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:29:58,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107353071] [2022-11-21 16:29:58,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:29:58,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:29:58,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:29:58,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:29:58,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:29:58,614 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 173 [2022-11-21 16:29:58,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 173 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:29:58,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:29:58,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 173 [2022-11-21 16:29:58,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:29:58,902 INFO L130 PetriNetUnfolder]: 10/429 cut-off events. [2022-11-21 16:29:58,903 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-21 16:29:58,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 429 events. 10/429 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1554 event pairs, 0 based on Foata normal form. 72/446 useless extension candidates. Maximal degree in co-relation 239. Up to 66 conditions per place. [2022-11-21 16:29:58,908 INFO L137 encePairwiseOnDemand]: 151/173 looper letters, 44 selfloop transitions, 10 changer transitions 29/183 dead transitions. [2022-11-21 16:29:58,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 183 transitions, 516 flow [2022-11-21 16:29:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:29:58,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:29:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 702 transitions. [2022-11-21 16:29:58,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8115606936416185 [2022-11-21 16:29:58,938 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 702 transitions. [2022-11-21 16:29:58,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 702 transitions. [2022-11-21 16:29:58,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:29:58,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 702 transitions. [2022-11-21 16:29:58,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:29:58,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:29:58,963 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:29:58,965 INFO L175 Difference]: Start difference. First operand has 163 places, 173 transitions, 368 flow. Second operand 5 states and 702 transitions. [2022-11-21 16:29:58,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 183 transitions, 516 flow [2022-11-21 16:29:58,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 183 transitions, 516 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:29:59,013 INFO L231 Difference]: Finished difference. Result has 165 places, 137 transitions, 330 flow [2022-11-21 16:29:59,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=165, PETRI_TRANSITIONS=137} [2022-11-21 16:29:59,028 INFO L288 CegarLoopForPetriNet]: 163 programPoint places, 2 predicate places. [2022-11-21 16:29:59,029 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 137 transitions, 330 flow [2022-11-21 16:29:59,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:29:59,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:29:59,030 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] [2022-11-21 16:29:59,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:29:59,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:29:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:29:59,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2039251645, now seen corresponding path program 1 times [2022-11-21 16:29:59,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:29:59,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812562603] [2022-11-21 16:29:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:29:59,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:29:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:29:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:29:59,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:29:59,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812562603] [2022-11-21 16:29:59,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812562603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:29:59,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:29:59,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:29:59,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469174885] [2022-11-21 16:29:59,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:29:59,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:29:59,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:29:59,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:29:59,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:29:59,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 173 [2022-11-21 16:29:59,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 137 transitions, 330 flow. Second operand has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:29:59,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:29:59,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 173 [2022-11-21 16:29:59,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:29:59,539 INFO L130 PetriNetUnfolder]: 8/330 cut-off events. [2022-11-21 16:29:59,539 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-21 16:29:59,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 330 events. 8/330 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 951 event pairs, 2 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 263. Up to 135 conditions per place. [2022-11-21 16:29:59,541 INFO L137 encePairwiseOnDemand]: 166/173 looper letters, 50 selfloop transitions, 6 changer transitions 0/144 dead transitions. [2022-11-21 16:29:59,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 144 transitions, 459 flow [2022-11-21 16:29:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:29:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:29:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2022-11-21 16:29:59,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7271676300578035 [2022-11-21 16:29:59,544 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2022-11-21 16:29:59,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2022-11-21 16:29:59,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:29:59,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2022-11-21 16:29:59,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:29:59,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:29:59,550 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:29:59,550 INFO L175 Difference]: Start difference. First operand has 165 places, 137 transitions, 330 flow. Second operand 5 states and 629 transitions. [2022-11-21 16:29:59,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 144 transitions, 459 flow [2022-11-21 16:29:59,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 144 transitions, 455 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:29:59,556 INFO L231 Difference]: Finished difference. Result has 144 places, 141 transitions, 368 flow [2022-11-21 16:29:59,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=144, PETRI_TRANSITIONS=141} [2022-11-21 16:29:59,558 INFO L288 CegarLoopForPetriNet]: 163 programPoint places, -19 predicate places. [2022-11-21 16:29:59,558 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 141 transitions, 368 flow [2022-11-21 16:29:59,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:29:59,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:29:59,559 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:29:59,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:29:59,559 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:29:59,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:29:59,560 INFO L85 PathProgramCache]: Analyzing trace with hash -649507301, now seen corresponding path program 1 times [2022-11-21 16:29:59,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:29:59,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932662927] [2022-11-21 16:29:59,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:29:59,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:29:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:29:59,600 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:29:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:29:59,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:29:59,675 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:29:59,676 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-21 16:29:59,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-21 16:29:59,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-21 16:29:59,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-21 16:29:59,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-21 16:29:59,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-21 16:29:59,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-21 16:29:59,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-21 16:29:59,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-21 16:29:59,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-21 16:29:59,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:29:59,684 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-21 16:29:59,691 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:29:59,691 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 16:29:59,751 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-21 16:29:59,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 192 transitions, 432 flow [2022-11-21 16:29:59,974 INFO L130 PetriNetUnfolder]: 147/1219 cut-off events. [2022-11-21 16:29:59,974 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-21 16:29:59,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 1219 events. 147/1219 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6592 event pairs, 2 based on Foata normal form. 0/1009 useless extension candidates. Maximal degree in co-relation 697. Up to 32 conditions per place. [2022-11-21 16:29:59,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 192 transitions, 432 flow [2022-11-21 16:29:59,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 192 transitions, 432 flow [2022-11-21 16:29:59,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:30:00,000 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;@5cd0737, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:30:00,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-21 16:30:00,011 INFO L130 PetriNetUnfolder]: 7/116 cut-off events. [2022-11-21 16:30:00,013 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:30:00,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:00,013 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] [2022-11-21 16:30:00,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:00,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:00,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1133339892, now seen corresponding path program 1 times [2022-11-21 16:30:00,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:00,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597363698] [2022-11-21 16:30:00,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:00,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:00,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:00,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597363698] [2022-11-21 16:30:00,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597363698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:00,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:00,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:30:00,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291470136] [2022-11-21 16:30:00,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:00,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:30:00,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:00,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:30:00,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:30:00,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 192 [2022-11-21 16:30:00,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 192 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:00,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:00,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 192 [2022-11-21 16:30:00,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:00,635 INFO L130 PetriNetUnfolder]: 85/1682 cut-off events. [2022-11-21 16:30:00,635 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-21 16:30:00,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2302 conditions, 1682 events. 85/1682 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 11670 event pairs, 0 based on Foata normal form. 479/1911 useless extension candidates. Maximal degree in co-relation 1135. Up to 267 conditions per place. [2022-11-21 16:30:00,647 INFO L137 encePairwiseOnDemand]: 169/192 looper letters, 65 selfloop transitions, 10 changer transitions 27/213 dead transitions. [2022-11-21 16:30:00,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 213 transitions, 652 flow [2022-11-21 16:30:00,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:30:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:30:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 780 transitions. [2022-11-21 16:30:00,650 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8125 [2022-11-21 16:30:00,650 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 780 transitions. [2022-11-21 16:30:00,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 780 transitions. [2022-11-21 16:30:00,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:00,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 780 transitions. [2022-11-21 16:30:00,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:00,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:00,656 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:00,657 INFO L175 Difference]: Start difference. First operand has 181 places, 192 transitions, 432 flow. Second operand 5 states and 780 transitions. [2022-11-21 16:30:00,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 213 transitions, 652 flow [2022-11-21 16:30:00,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 213 transitions, 652 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:30:00,664 INFO L231 Difference]: Finished difference. Result has 187 places, 162 transitions, 434 flow [2022-11-21 16:30:00,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=187, PETRI_TRANSITIONS=162} [2022-11-21 16:30:00,668 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 6 predicate places. [2022-11-21 16:30:00,668 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 162 transitions, 434 flow [2022-11-21 16:30:00,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:00,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:00,670 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] [2022-11-21 16:30:00,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:30:00,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:00,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:00,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2042610552, now seen corresponding path program 1 times [2022-11-21 16:30:00,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:00,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250678502] [2022-11-21 16:30:00,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:00,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:00,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:00,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:00,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250678502] [2022-11-21 16:30:00,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250678502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:00,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:00,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:30:00,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868147360] [2022-11-21 16:30:00,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:00,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:30:00,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:30:00,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:30:00,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 192 [2022-11-21 16:30:00,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 162 transitions, 434 flow. Second operand has 5 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:00,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:00,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 192 [2022-11-21 16:30:00,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:01,243 INFO L130 PetriNetUnfolder]: 85/1196 cut-off events. [2022-11-21 16:30:01,243 INFO L131 PetriNetUnfolder]: For 326/326 co-relation queries the response was YES. [2022-11-21 16:30:01,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2033 conditions, 1196 events. 85/1196 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 7019 event pairs, 22 based on Foata normal form. 0/1039 useless extension candidates. Maximal degree in co-relation 1031. Up to 521 conditions per place. [2022-11-21 16:30:01,252 INFO L137 encePairwiseOnDemand]: 185/192 looper letters, 61 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2022-11-21 16:30:01,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 169 transitions, 586 flow [2022-11-21 16:30:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:30:01,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:30:01,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 690 transitions. [2022-11-21 16:30:01,255 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.71875 [2022-11-21 16:30:01,255 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 690 transitions. [2022-11-21 16:30:01,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 690 transitions. [2022-11-21 16:30:01,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:01,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 690 transitions. [2022-11-21 16:30:01,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.0) internal successors, (690), 5 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) [2022-11-21 16:30:01,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:01,261 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:01,261 INFO L175 Difference]: Start difference. First operand has 187 places, 162 transitions, 434 flow. Second operand 5 states and 690 transitions. [2022-11-21 16:30:01,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 169 transitions, 586 flow [2022-11-21 16:30:01,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 169 transitions, 586 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:30:01,267 INFO L231 Difference]: Finished difference. Result has 168 places, 166 transitions, 477 flow [2022-11-21 16:30:01,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=477, PETRI_PLACES=168, PETRI_TRANSITIONS=166} [2022-11-21 16:30:01,269 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -13 predicate places. [2022-11-21 16:30:01,269 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 166 transitions, 477 flow [2022-11-21 16:30:01,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:01,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:01,270 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:01,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:30:01,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:01,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:01,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2004807619, now seen corresponding path program 1 times [2022-11-21 16:30:01,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:01,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313055530] [2022-11-21 16:30:01,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:01,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:01,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:01,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313055530] [2022-11-21 16:30:01,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313055530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:01,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:01,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:30:01,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491896486] [2022-11-21 16:30:01,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:01,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:30:01,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:01,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:30:01,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:30:01,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 192 [2022-11-21 16:30:01,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 166 transitions, 477 flow. Second operand has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:01,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:01,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 192 [2022-11-21 16:30:01,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:01,756 INFO L130 PetriNetUnfolder]: 85/1190 cut-off events. [2022-11-21 16:30:01,756 INFO L131 PetriNetUnfolder]: For 341/341 co-relation queries the response was YES. [2022-11-21 16:30:01,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 1190 events. 85/1190 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6997 event pairs, 0 based on Foata normal form. 0/1042 useless extension candidates. Maximal degree in co-relation 1659. Up to 262 conditions per place. [2022-11-21 16:30:01,764 INFO L137 encePairwiseOnDemand]: 180/192 looper letters, 66 selfloop transitions, 11 changer transitions 0/191 dead transitions. [2022-11-21 16:30:01,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 191 transitions, 709 flow [2022-11-21 16:30:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:30:01,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:30:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 757 transitions. [2022-11-21 16:30:01,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7885416666666667 [2022-11-21 16:30:01,767 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 757 transitions. [2022-11-21 16:30:01,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 757 transitions. [2022-11-21 16:30:01,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:01,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 757 transitions. [2022-11-21 16:30:01,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.4) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:01,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:01,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:01,774 INFO L175 Difference]: Start difference. First operand has 168 places, 166 transitions, 477 flow. Second operand 5 states and 757 transitions. [2022-11-21 16:30:01,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 191 transitions, 709 flow [2022-11-21 16:30:01,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 191 transitions, 706 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:30:01,781 INFO L231 Difference]: Finished difference. Result has 174 places, 168 transitions, 521 flow [2022-11-21 16:30:01,781 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=521, PETRI_PLACES=174, PETRI_TRANSITIONS=168} [2022-11-21 16:30:01,784 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -7 predicate places. [2022-11-21 16:30:01,785 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 168 transitions, 521 flow [2022-11-21 16:30:01,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:01,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:01,785 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:01,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:30:01,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:01,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:01,787 INFO L85 PathProgramCache]: Analyzing trace with hash 265554246, now seen corresponding path program 1 times [2022-11-21 16:30:01,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:01,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667505129] [2022-11-21 16:30:01,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:01,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:01,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:01,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667505129] [2022-11-21 16:30:01,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667505129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:30:01,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951642633] [2022-11-21 16:30:01,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:01,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:01,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:30:01,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:30:01,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:30:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:02,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:30:02,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:30:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:02,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:30:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:02,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951642633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:30:02,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:30:02,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:30:02,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916545101] [2022-11-21 16:30:02,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:30:02,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:30:02,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:02,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:30:02,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:30:02,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 192 [2022-11-21 16:30:02,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 168 transitions, 521 flow. Second operand has 12 states, 12 states have (on average 139.16666666666666) internal successors, (1670), 12 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:02,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:02,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 192 [2022-11-21 16:30:02,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:02,727 INFO L130 PetriNetUnfolder]: 85/1189 cut-off events. [2022-11-21 16:30:02,728 INFO L131 PetriNetUnfolder]: For 649/649 co-relation queries the response was YES. [2022-11-21 16:30:02,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2090 conditions, 1189 events. 85/1189 cut-off events. For 649/649 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6957 event pairs, 0 based on Foata normal form. 1/1048 useless extension candidates. Maximal degree in co-relation 1743. Up to 237 conditions per place. [2022-11-21 16:30:02,735 INFO L137 encePairwiseOnDemand]: 180/192 looper letters, 64 selfloop transitions, 16 changer transitions 0/194 dead transitions. [2022-11-21 16:30:02,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 194 transitions, 770 flow [2022-11-21 16:30:02,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:30:02,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 16:30:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1439 transitions. [2022-11-21 16:30:02,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7494791666666667 [2022-11-21 16:30:02,741 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1439 transitions. [2022-11-21 16:30:02,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1439 transitions. [2022-11-21 16:30:02,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:02,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1439 transitions. [2022-11-21 16:30:02,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 143.9) internal successors, (1439), 10 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:02,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 192.0) internal successors, (2112), 11 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:02,753 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 192.0) internal successors, (2112), 11 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:02,753 INFO L175 Difference]: Start difference. First operand has 174 places, 168 transitions, 521 flow. Second operand 10 states and 1439 transitions. [2022-11-21 16:30:02,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 194 transitions, 770 flow [2022-11-21 16:30:02,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 194 transitions, 770 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:30:02,760 INFO L231 Difference]: Finished difference. Result has 182 places, 168 transitions, 558 flow [2022-11-21 16:30:02,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=558, PETRI_PLACES=182, PETRI_TRANSITIONS=168} [2022-11-21 16:30:02,762 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, 1 predicate places. [2022-11-21 16:30:02,762 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 168 transitions, 558 flow [2022-11-21 16:30:02,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 139.16666666666666) internal successors, (1670), 12 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:02,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:02,763 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:30:02,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:30:02,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 16:30:02,970 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:02,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash -357752366, now seen corresponding path program 1 times [2022-11-21 16:30:02,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:02,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363037231] [2022-11-21 16:30:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:03,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:03,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363037231] [2022-11-21 16:30:03,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363037231] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:30:03,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470479943] [2022-11-21 16:30:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:03,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:03,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:30:03,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:30:03,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:30:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:03,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:30:03,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:30:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:03,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:30:03,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470479943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:03,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:30:03,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:30:03,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247587500] [2022-11-21 16:30:03,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:03,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:30:03,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:03,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:30:03,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:30:03,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 192 [2022-11-21 16:30:03,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 168 transitions, 558 flow. Second operand has 6 states, 6 states have (on average 138.83333333333334) internal successors, (833), 6 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:03,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:03,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 192 [2022-11-21 16:30:03,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:03,697 INFO L130 PetriNetUnfolder]: 85/1188 cut-off events. [2022-11-21 16:30:03,697 INFO L131 PetriNetUnfolder]: For 918/918 co-relation queries the response was YES. [2022-11-21 16:30:03,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2151 conditions, 1188 events. 85/1188 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6977 event pairs, 0 based on Foata normal form. 1/1047 useless extension candidates. Maximal degree in co-relation 1795. Up to 237 conditions per place. [2022-11-21 16:30:03,704 INFO L137 encePairwiseOnDemand]: 181/192 looper letters, 62 selfloop transitions, 14 changer transitions 0/190 dead transitions. [2022-11-21 16:30:03,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 190 transitions, 778 flow [2022-11-21 16:30:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:30:03,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:30:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1026 transitions. [2022-11-21 16:30:03,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7633928571428571 [2022-11-21 16:30:03,707 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1026 transitions. [2022-11-21 16:30:03,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1026 transitions. [2022-11-21 16:30:03,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:03,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1026 transitions. [2022-11-21 16:30:03,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:03,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 192.0) internal successors, (1536), 8 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:03,716 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 192.0) internal successors, (1536), 8 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:03,716 INFO L175 Difference]: Start difference. First operand has 182 places, 168 transitions, 558 flow. Second operand 7 states and 1026 transitions. [2022-11-21 16:30:03,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 190 transitions, 778 flow [2022-11-21 16:30:03,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 190 transitions, 740 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-21 16:30:03,723 INFO L231 Difference]: Finished difference. Result has 179 places, 167 transitions, 542 flow [2022-11-21 16:30:03,723 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=192, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=179, PETRI_TRANSITIONS=167} [2022-11-21 16:30:03,725 INFO L288 CegarLoopForPetriNet]: 181 programPoint places, -2 predicate places. [2022-11-21 16:30:03,725 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 167 transitions, 542 flow [2022-11-21 16:30:03,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.83333333333334) internal successors, (833), 6 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:03,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:03,726 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-21 16:30:03,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:30:03,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:03,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:03,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:03,932 INFO L85 PathProgramCache]: Analyzing trace with hash 592736327, now seen corresponding path program 1 times [2022-11-21 16:30:03,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:03,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408951196] [2022-11-21 16:30:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:03,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:30:03,972 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:30:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:30:04,014 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:30:04,014 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:30:04,015 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-21 16:30:04,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-21 16:30:04,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-21 16:30:04,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-21 16:30:04,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-21 16:30:04,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-21 16:30:04,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-21 16:30:04,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-21 16:30:04,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-21 16:30:04,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-21 16:30:04,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:30:04,019 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-21 16:30:04,019 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:30:04,019 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-21 16:30:04,064 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-21 16:30:04,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 211 transitions, 500 flow [2022-11-21 16:30:04,819 INFO L130 PetriNetUnfolder]: 639/4240 cut-off events. [2022-11-21 16:30:04,819 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-21 16:30:04,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4691 conditions, 4240 events. 639/4240 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 31871 event pairs, 64 based on Foata normal form. 0/3507 useless extension candidates. Maximal degree in co-relation 2436. Up to 192 conditions per place. [2022-11-21 16:30:04,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 211 transitions, 500 flow [2022-11-21 16:30:04,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 211 transitions, 500 flow [2022-11-21 16:30:04,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:30:04,855 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;@5cd0737, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:30:04,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-21 16:30:04,864 INFO L130 PetriNetUnfolder]: 7/116 cut-off events. [2022-11-21 16:30:04,864 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:30:04,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:04,864 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] [2022-11-21 16:30:04,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:04,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:04,865 INFO L85 PathProgramCache]: Analyzing trace with hash -553575885, now seen corresponding path program 1 times [2022-11-21 16:30:04,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:04,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950897487] [2022-11-21 16:30:04,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:04,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:04,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:04,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950897487] [2022-11-21 16:30:04,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950897487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:04,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:04,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:30:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461582079] [2022-11-21 16:30:04,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:04,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:30:04,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:04,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:30:04,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:30:04,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-21 16:30:04,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 211 transitions, 500 flow. Second operand has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:04,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:04,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-21 16:30:04,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:06,256 INFO L130 PetriNetUnfolder]: 502/6219 cut-off events. [2022-11-21 16:30:06,256 INFO L131 PetriNetUnfolder]: For 647/647 co-relation queries the response was YES. [2022-11-21 16:30:06,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8781 conditions, 6219 events. 502/6219 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 59470 event pairs, 8 based on Foata normal form. 2442/7730 useless extension candidates. Maximal degree in co-relation 4453. Up to 1173 conditions per place. [2022-11-21 16:30:06,298 INFO L137 encePairwiseOnDemand]: 187/211 looper letters, 75 selfloop transitions, 10 changer transitions 27/234 dead transitions. [2022-11-21 16:30:06,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 234 transitions, 756 flow [2022-11-21 16:30:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:30:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:30:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 847 transitions. [2022-11-21 16:30:06,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8028436018957346 [2022-11-21 16:30:06,301 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 847 transitions. [2022-11-21 16:30:06,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 847 transitions. [2022-11-21 16:30:06,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:06,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 847 transitions. [2022-11-21 16:30:06,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.4) internal successors, (847), 5 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:06,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:06,308 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:06,309 INFO L175 Difference]: Start difference. First operand has 199 places, 211 transitions, 500 flow. Second operand 5 states and 847 transitions. [2022-11-21 16:30:06,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 234 transitions, 756 flow [2022-11-21 16:30:06,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 234 transitions, 756 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:30:06,314 INFO L231 Difference]: Finished difference. Result has 204 places, 179 transitions, 498 flow [2022-11-21 16:30:06,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=204, PETRI_TRANSITIONS=179} [2022-11-21 16:30:06,316 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 5 predicate places. [2022-11-21 16:30:06,316 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 179 transitions, 498 flow [2022-11-21 16:30:06,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:06,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:06,317 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] [2022-11-21 16:30:06,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:30:06,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:06,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:06,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1243962810, now seen corresponding path program 1 times [2022-11-21 16:30:06,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:06,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044273844] [2022-11-21 16:30:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:06,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:06,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:06,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044273844] [2022-11-21 16:30:06,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044273844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:06,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:06,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:30:06,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845440571] [2022-11-21 16:30:06,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:06,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:30:06,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:06,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:30:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:30:06,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 211 [2022-11-21 16:30:06,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 179 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:06,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:06,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 211 [2022-11-21 16:30:06,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:07,382 INFO L130 PetriNetUnfolder]: 502/4250 cut-off events. [2022-11-21 16:30:07,382 INFO L131 PetriNetUnfolder]: For 1351/1351 co-relation queries the response was YES. [2022-11-21 16:30:07,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7457 conditions, 4250 events. 502/4250 cut-off events. For 1351/1351 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 35299 event pairs, 122 based on Foata normal form. 0/3682 useless extension candidates. Maximal degree in co-relation 3828. Up to 1983 conditions per place. [2022-11-21 16:30:07,408 INFO L137 encePairwiseOnDemand]: 204/211 looper letters, 67 selfloop transitions, 6 changer transitions 0/186 dead transitions. [2022-11-21 16:30:07,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 186 transitions, 662 flow [2022-11-21 16:30:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:30:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:30:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2022-11-21 16:30:07,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7118483412322275 [2022-11-21 16:30:07,411 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2022-11-21 16:30:07,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2022-11-21 16:30:07,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:07,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2022-11-21 16:30:07,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:07,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:07,417 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:07,417 INFO L175 Difference]: Start difference. First operand has 204 places, 179 transitions, 498 flow. Second operand 5 states and 751 transitions. [2022-11-21 16:30:07,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 186 transitions, 662 flow [2022-11-21 16:30:07,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 186 transitions, 662 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:30:07,423 INFO L231 Difference]: Finished difference. Result has 185 places, 183 transitions, 541 flow [2022-11-21 16:30:07,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=541, PETRI_PLACES=185, PETRI_TRANSITIONS=183} [2022-11-21 16:30:07,424 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, -14 predicate places. [2022-11-21 16:30:07,425 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 183 transitions, 541 flow [2022-11-21 16:30:07,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:07,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:07,425 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:07,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:30:07,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:07,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:07,426 INFO L85 PathProgramCache]: Analyzing trace with hash 778343408, now seen corresponding path program 1 times [2022-11-21 16:30:07,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:07,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246568829] [2022-11-21 16:30:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:07,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:07,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:07,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246568829] [2022-11-21 16:30:07,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246568829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:07,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:07,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:30:07,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193191767] [2022-11-21 16:30:07,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:07,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:30:07,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:07,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:30:07,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:30:07,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-21 16:30:07,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 183 transitions, 541 flow. Second operand has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:07,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:07,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-21 16:30:07,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:08,475 INFO L130 PetriNetUnfolder]: 502/4242 cut-off events. [2022-11-21 16:30:08,476 INFO L131 PetriNetUnfolder]: For 1363/1363 co-relation queries the response was YES. [2022-11-21 16:30:08,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7286 conditions, 4242 events. 502/4242 cut-off events. For 1363/1363 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 35247 event pairs, 8 based on Foata normal form. 0/3686 useless extension candidates. Maximal degree in co-relation 6652. Up to 1140 conditions per place. [2022-11-21 16:30:08,498 INFO L137 encePairwiseOnDemand]: 199/211 looper letters, 76 selfloop transitions, 11 changer transitions 0/212 dead transitions. [2022-11-21 16:30:08,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 212 transitions, 813 flow [2022-11-21 16:30:08,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:30:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:30:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 822 transitions. [2022-11-21 16:30:08,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7791469194312797 [2022-11-21 16:30:08,502 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 822 transitions. [2022-11-21 16:30:08,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 822 transitions. [2022-11-21 16:30:08,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:08,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 822 transitions. [2022-11-21 16:30:08,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:08,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:08,507 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:08,508 INFO L175 Difference]: Start difference. First operand has 185 places, 183 transitions, 541 flow. Second operand 5 states and 822 transitions. [2022-11-21 16:30:08,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 212 transitions, 813 flow [2022-11-21 16:30:08,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 212 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:30:08,514 INFO L231 Difference]: Finished difference. Result has 191 places, 185 transitions, 585 flow [2022-11-21 16:30:08,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=585, PETRI_PLACES=191, PETRI_TRANSITIONS=185} [2022-11-21 16:30:08,516 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, -8 predicate places. [2022-11-21 16:30:08,517 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 185 transitions, 585 flow [2022-11-21 16:30:08,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:08,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:08,519 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:08,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:30:08,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:08,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:08,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1563783405, now seen corresponding path program 1 times [2022-11-21 16:30:08,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:08,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666160970] [2022-11-21 16:30:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:08,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:08,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:08,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666160970] [2022-11-21 16:30:08,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666160970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:30:08,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619624936] [2022-11-21 16:30:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:08,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:08,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:30:08,655 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:30:08,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:30:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:08,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:30:08,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:30:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:08,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:30:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:08,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619624936] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:30:08,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:30:08,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:30:08,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584488954] [2022-11-21 16:30:08,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:30:08,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:30:08,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:08,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:30:08,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:30:08,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-21 16:30:08,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 185 transitions, 585 flow. Second operand has 12 states, 12 states have (on average 150.16666666666666) internal successors, (1802), 12 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:08,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:08,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-21 16:30:08,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:10,129 INFO L130 PetriNetUnfolder]: 502/4240 cut-off events. [2022-11-21 16:30:10,129 INFO L131 PetriNetUnfolder]: For 2296/2296 co-relation queries the response was YES. [2022-11-21 16:30:10,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7584 conditions, 4240 events. 502/4240 cut-off events. For 2296/2296 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 35226 event pairs, 8 based on Foata normal form. 2/3702 useless extension candidates. Maximal degree in co-relation 6924. Up to 1084 conditions per place. [2022-11-21 16:30:10,162 INFO L137 encePairwiseOnDemand]: 199/211 looper letters, 79 selfloop transitions, 21 changer transitions 0/225 dead transitions. [2022-11-21 16:30:10,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 225 transitions, 933 flow [2022-11-21 16:30:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:30:10,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:30:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2158 transitions. [2022-11-21 16:30:10,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7305348679756263 [2022-11-21 16:30:10,168 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2158 transitions. [2022-11-21 16:30:10,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2158 transitions. [2022-11-21 16:30:10,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:10,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2158 transitions. [2022-11-21 16:30:10,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 154.14285714285714) internal successors, (2158), 14 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:10,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 211.0) internal successors, (3165), 15 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:10,183 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 211.0) internal successors, (3165), 15 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:10,183 INFO L175 Difference]: Start difference. First operand has 191 places, 185 transitions, 585 flow. Second operand 14 states and 2158 transitions. [2022-11-21 16:30:10,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 225 transitions, 933 flow [2022-11-21 16:30:10,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 225 transitions, 933 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:30:10,192 INFO L231 Difference]: Finished difference. Result has 203 places, 190 transitions, 657 flow [2022-11-21 16:30:10,192 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=657, PETRI_PLACES=203, PETRI_TRANSITIONS=190} [2022-11-21 16:30:10,193 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 4 predicate places. [2022-11-21 16:30:10,193 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 190 transitions, 657 flow [2022-11-21 16:30:10,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 150.16666666666666) internal successors, (1802), 12 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:10,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:10,195 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:30:10,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:30:10,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:10,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:10,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:10,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1232644490, now seen corresponding path program 1 times [2022-11-21 16:30:10,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:10,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642448985] [2022-11-21 16:30:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:10,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:10,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:10,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642448985] [2022-11-21 16:30:10,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642448985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:30:10,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314644906] [2022-11-21 16:30:10,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:10,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:10,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:30:10,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:30:10,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:30:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:10,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:30:10,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:30:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:10,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:30:10,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314644906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:10,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:30:10,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:30:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808842104] [2022-11-21 16:30:10,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:10,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:30:10,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:30:10,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:30:10,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-21 16:30:10,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 190 transitions, 657 flow. Second operand has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:10,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:10,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-21 16:30:10,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:11,731 INFO L130 PetriNetUnfolder]: 502/4238 cut-off events. [2022-11-21 16:30:11,732 INFO L131 PetriNetUnfolder]: For 3141/3141 co-relation queries the response was YES. [2022-11-21 16:30:11,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 4238 events. 502/4238 cut-off events. For 3141/3141 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 35215 event pairs, 8 based on Foata normal form. 2/3700 useless extension candidates. Maximal degree in co-relation 7096. Up to 1084 conditions per place. [2022-11-21 16:30:11,765 INFO L137 encePairwiseOnDemand]: 200/211 looper letters, 73 selfloop transitions, 17 changer transitions 0/215 dead transitions. [2022-11-21 16:30:11,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 215 transitions, 919 flow [2022-11-21 16:30:11,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:30:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:30:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1113 transitions. [2022-11-21 16:30:11,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7535545023696683 [2022-11-21 16:30:11,769 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1113 transitions. [2022-11-21 16:30:11,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1113 transitions. [2022-11-21 16:30:11,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:11,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1113 transitions. [2022-11-21 16:30:11,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:11,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:11,776 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:11,777 INFO L175 Difference]: Start difference. First operand has 203 places, 190 transitions, 657 flow. Second operand 7 states and 1113 transitions. [2022-11-21 16:30:11,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 215 transitions, 919 flow [2022-11-21 16:30:11,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 215 transitions, 871 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-11-21 16:30:11,786 INFO L231 Difference]: Finished difference. Result has 199 places, 188 transitions, 631 flow [2022-11-21 16:30:11,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=631, PETRI_PLACES=199, PETRI_TRANSITIONS=188} [2022-11-21 16:30:11,788 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 0 predicate places. [2022-11-21 16:30:11,788 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 188 transitions, 631 flow [2022-11-21 16:30:11,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:11,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:11,789 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:11,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:30:11,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 16:30:11,994 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:11,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:11,995 INFO L85 PathProgramCache]: Analyzing trace with hash -861690499, now seen corresponding path program 1 times [2022-11-21 16:30:11,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:11,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104360801] [2022-11-21 16:30:11,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:11,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:12,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:30:12,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:12,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104360801] [2022-11-21 16:30:12,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104360801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:12,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:12,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:30:12,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44771861] [2022-11-21 16:30:12,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:12,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:30:12,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:12,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:30:12,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:30:12,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-21 16:30:12,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 188 transitions, 631 flow. Second operand has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:12,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:12,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-21 16:30:12,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:13,104 INFO L130 PetriNetUnfolder]: 502/4193 cut-off events. [2022-11-21 16:30:13,104 INFO L131 PetriNetUnfolder]: For 2923/2923 co-relation queries the response was YES. [2022-11-21 16:30:13,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8113 conditions, 4193 events. 502/4193 cut-off events. For 2923/2923 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 34658 event pairs, 8 based on Foata normal form. 0/3731 useless extension candidates. Maximal degree in co-relation 7429. Up to 1385 conditions per place. [2022-11-21 16:30:13,127 INFO L137 encePairwiseOnDemand]: 199/211 looper letters, 78 selfloop transitions, 13 changer transitions 0/216 dead transitions. [2022-11-21 16:30:13,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 216 transitions, 909 flow [2022-11-21 16:30:13,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:30:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:30:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 822 transitions. [2022-11-21 16:30:13,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7791469194312797 [2022-11-21 16:30:13,131 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 822 transitions. [2022-11-21 16:30:13,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 822 transitions. [2022-11-21 16:30:13,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:13,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 822 transitions. [2022-11-21 16:30:13,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:13,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:13,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:13,137 INFO L175 Difference]: Start difference. First operand has 199 places, 188 transitions, 631 flow. Second operand 5 states and 822 transitions. [2022-11-21 16:30:13,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 216 transitions, 909 flow [2022-11-21 16:30:13,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 216 transitions, 875 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:30:13,146 INFO L231 Difference]: Finished difference. Result has 200 places, 190 transitions, 650 flow [2022-11-21 16:30:13,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=650, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-11-21 16:30:13,148 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 1 predicate places. [2022-11-21 16:30:13,148 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 650 flow [2022-11-21 16:30:13,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:13,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:13,149 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:13,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:30:13,149 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:13,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:13,150 INFO L85 PathProgramCache]: Analyzing trace with hash -7574768, now seen corresponding path program 1 times [2022-11-21 16:30:13,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:13,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985513383] [2022-11-21 16:30:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:13,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:13,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:13,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985513383] [2022-11-21 16:30:13,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985513383] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:30:13,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814915868] [2022-11-21 16:30:13,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:13,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:13,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:30:13,255 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:30:13,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:30:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:13,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:30:13,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:30:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:13,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:30:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:13,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814915868] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:30:13,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:30:13,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:30:13,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267160003] [2022-11-21 16:30:13,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:30:13,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:30:13,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:13,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:30:13,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:30:13,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-21 16:30:13,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 650 flow. Second operand has 12 states, 12 states have (on average 150.33333333333334) internal successors, (1804), 12 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:13,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:13,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-21 16:30:13,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:14,571 INFO L130 PetriNetUnfolder]: 502/4185 cut-off events. [2022-11-21 16:30:14,571 INFO L131 PetriNetUnfolder]: For 3954/3954 co-relation queries the response was YES. [2022-11-21 16:30:14,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8227 conditions, 4185 events. 502/4185 cut-off events. For 3954/3954 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 34631 event pairs, 8 based on Foata normal form. 8/3845 useless extension candidates. Maximal degree in co-relation 7523. Up to 1036 conditions per place. [2022-11-21 16:30:14,597 INFO L137 encePairwiseOnDemand]: 199/211 looper letters, 81 selfloop transitions, 23 changer transitions 0/229 dead transitions. [2022-11-21 16:30:14,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 229 transitions, 1002 flow [2022-11-21 16:30:14,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:30:14,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:30:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2158 transitions. [2022-11-21 16:30:14,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7305348679756263 [2022-11-21 16:30:14,604 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2158 transitions. [2022-11-21 16:30:14,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2158 transitions. [2022-11-21 16:30:14,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:14,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2158 transitions. [2022-11-21 16:30:14,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 154.14285714285714) internal successors, (2158), 14 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:14,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 211.0) internal successors, (3165), 15 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:14,620 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 211.0) internal successors, (3165), 15 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:14,620 INFO L175 Difference]: Start difference. First operand has 200 places, 190 transitions, 650 flow. Second operand 14 states and 2158 transitions. [2022-11-21 16:30:14,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 229 transitions, 1002 flow [2022-11-21 16:30:14,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 229 transitions, 1002 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:30:14,633 INFO L231 Difference]: Finished difference. Result has 212 places, 195 transitions, 732 flow [2022-11-21 16:30:14,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=732, PETRI_PLACES=212, PETRI_TRANSITIONS=195} [2022-11-21 16:30:14,634 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 13 predicate places. [2022-11-21 16:30:14,634 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 195 transitions, 732 flow [2022-11-21 16:30:14,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 150.33333333333334) internal successors, (1804), 12 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:14,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:14,636 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:30:14,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:30:14,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 16:30:14,841 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:14,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:14,842 INFO L85 PathProgramCache]: Analyzing trace with hash -234817099, now seen corresponding path program 1 times [2022-11-21 16:30:14,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:14,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970882205] [2022-11-21 16:30:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:14,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:14,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:14,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970882205] [2022-11-21 16:30:14,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970882205] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:30:14,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601461495] [2022-11-21 16:30:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:14,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:14,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:30:14,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:30:15,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:30:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:15,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:30:15,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:30:15,184 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:15,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:30:15,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601461495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:15,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:30:15,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:30:15,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374709285] [2022-11-21 16:30:15,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:15,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:30:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:15,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:30:15,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:30:15,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-21 16:30:15,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 195 transitions, 732 flow. Second operand has 6 states, 6 states have (on average 150.16666666666666) internal successors, (901), 6 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:15,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:15,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-21 16:30:15,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:16,209 INFO L130 PetriNetUnfolder]: 502/4177 cut-off events. [2022-11-21 16:30:16,210 INFO L131 PetriNetUnfolder]: For 5134/5134 co-relation queries the response was YES. [2022-11-21 16:30:16,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8423 conditions, 4177 events. 502/4177 cut-off events. For 5134/5134 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 34512 event pairs, 8 based on Foata normal form. 8/3837 useless extension candidates. Maximal degree in co-relation 7699. Up to 1036 conditions per place. [2022-11-21 16:30:16,236 INFO L137 encePairwiseOnDemand]: 200/211 looper letters, 75 selfloop transitions, 19 changer transitions 0/219 dead transitions. [2022-11-21 16:30:16,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 219 transitions, 1000 flow [2022-11-21 16:30:16,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:30:16,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:30:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1113 transitions. [2022-11-21 16:30:16,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7535545023696683 [2022-11-21 16:30:16,242 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1113 transitions. [2022-11-21 16:30:16,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1113 transitions. [2022-11-21 16:30:16,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:16,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1113 transitions. [2022-11-21 16:30:16,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:16,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:16,251 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:16,251 INFO L175 Difference]: Start difference. First operand has 212 places, 195 transitions, 732 flow. Second operand 7 states and 1113 transitions. [2022-11-21 16:30:16,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 219 transitions, 1000 flow [2022-11-21 16:30:16,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 219 transitions, 935 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-11-21 16:30:16,263 INFO L231 Difference]: Finished difference. Result has 207 places, 193 transitions, 693 flow [2022-11-21 16:30:16,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=693, PETRI_PLACES=207, PETRI_TRANSITIONS=193} [2022-11-21 16:30:16,264 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 8 predicate places. [2022-11-21 16:30:16,265 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 193 transitions, 693 flow [2022-11-21 16:30:16,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.16666666666666) internal successors, (901), 6 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:16,265 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:16,265 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:16,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:30:16,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 16:30:16,472 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:16,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1158085391, now seen corresponding path program 1 times [2022-11-21 16:30:16,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:16,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071391337] [2022-11-21 16:30:16,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:16,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:30:16,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:16,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071391337] [2022-11-21 16:30:16,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071391337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:16,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:16,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:30:16,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659229679] [2022-11-21 16:30:16,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:16,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:30:16,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:16,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:30:16,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:30:16,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 211 [2022-11-21 16:30:16,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 193 transitions, 693 flow. Second operand has 4 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:16,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:16,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 211 [2022-11-21 16:30:16,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:17,485 INFO L130 PetriNetUnfolder]: 502/4108 cut-off events. [2022-11-21 16:30:17,486 INFO L131 PetriNetUnfolder]: For 4179/4179 co-relation queries the response was YES. [2022-11-21 16:30:17,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8654 conditions, 4108 events. 502/4108 cut-off events. For 4179/4179 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 33645 event pairs, 8 based on Foata normal form. 0/3886 useless extension candidates. Maximal degree in co-relation 7947. Up to 1385 conditions per place. [2022-11-21 16:30:17,579 INFO L137 encePairwiseOnDemand]: 199/211 looper letters, 80 selfloop transitions, 15 changer transitions 0/220 dead transitions. [2022-11-21 16:30:17,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 220 transitions, 977 flow [2022-11-21 16:30:17,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:30:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:30:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 822 transitions. [2022-11-21 16:30:17,585 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7791469194312797 [2022-11-21 16:30:17,586 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 822 transitions. [2022-11-21 16:30:17,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 822 transitions. [2022-11-21 16:30:17,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:17,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 822 transitions. [2022-11-21 16:30:17,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:17,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:17,595 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:17,595 INFO L175 Difference]: Start difference. First operand has 207 places, 193 transitions, 693 flow. Second operand 5 states and 822 transitions. [2022-11-21 16:30:17,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 220 transitions, 977 flow [2022-11-21 16:30:17,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 220 transitions, 939 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:30:17,606 INFO L231 Difference]: Finished difference. Result has 208 places, 195 transitions, 714 flow [2022-11-21 16:30:17,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=714, PETRI_PLACES=208, PETRI_TRANSITIONS=195} [2022-11-21 16:30:17,607 INFO L288 CegarLoopForPetriNet]: 199 programPoint places, 9 predicate places. [2022-11-21 16:30:17,608 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 195 transitions, 714 flow [2022-11-21 16:30:17,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:17,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:17,609 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2022-11-21 16:30:17,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:30:17,609 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:17,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:17,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1336739683, now seen corresponding path program 1 times [2022-11-21 16:30:17,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:17,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685177824] [2022-11-21 16:30:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:17,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:30:17,655 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:30:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:30:17,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:30:17,691 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:30:17,691 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-21 16:30:17,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-21 16:30:17,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-21 16:30:17,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-21 16:30:17,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-21 16:30:17,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-21 16:30:17,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-21 16:30:17,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-21 16:30:17,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-21 16:30:17,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-21 16:30:17,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 16:30:17,694 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:17,695 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:30:17,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-21 16:30:17,739 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-21 16:30:17,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 230 transitions, 572 flow [2022-11-21 16:30:20,021 INFO L130 PetriNetUnfolder]: 2915/16019 cut-off events. [2022-11-21 16:30:20,021 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-11-21 16:30:20,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18184 conditions, 16019 events. 2915/16019 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 159186 event pairs, 626 based on Foata normal form. 0/13311 useless extension candidates. Maximal degree in co-relation 9132. Up to 1024 conditions per place. [2022-11-21 16:30:20,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 230 transitions, 572 flow [2022-11-21 16:30:20,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 230 transitions, 572 flow [2022-11-21 16:30:20,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:30:20,273 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;@5cd0737, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:30:20,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-21 16:30:20,280 INFO L130 PetriNetUnfolder]: 7/116 cut-off events. [2022-11-21 16:30:20,281 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:30:20,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:20,281 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] [2022-11-21 16:30:20,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:20,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1180688347, now seen corresponding path program 1 times [2022-11-21 16:30:20,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:20,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033592766] [2022-11-21 16:30:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:20,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:20,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:20,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033592766] [2022-11-21 16:30:20,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033592766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:20,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:20,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:30:20,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316556219] [2022-11-21 16:30:20,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:20,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:30:20,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:20,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:30:20,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:30:20,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-21 16:30:20,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 230 transitions, 572 flow. Second operand has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:20,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:20,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-21 16:30:20,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:24,611 INFO L130 PetriNetUnfolder]: 2671/23622 cut-off events. [2022-11-21 16:30:24,612 INFO L131 PetriNetUnfolder]: For 3252/3252 co-relation queries the response was YES. [2022-11-21 16:30:24,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34584 conditions, 23622 events. 2671/23622 cut-off events. For 3252/3252 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 285587 event pairs, 142 based on Foata normal form. 11579/31789 useless extension candidates. Maximal degree in co-relation 17287. Up to 5039 conditions per place. [2022-11-21 16:30:24,744 INFO L137 encePairwiseOnDemand]: 205/230 looper letters, 85 selfloop transitions, 10 changer transitions 27/255 dead transitions. [2022-11-21 16:30:24,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 255 transitions, 864 flow [2022-11-21 16:30:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:30:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:30:24,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 914 transitions. [2022-11-21 16:30:24,747 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7947826086956522 [2022-11-21 16:30:24,747 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 914 transitions. [2022-11-21 16:30:24,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 914 transitions. [2022-11-21 16:30:24,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:24,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 914 transitions. [2022-11-21 16:30:24,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:24,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:24,752 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:24,752 INFO L175 Difference]: Start difference. First operand has 217 places, 230 transitions, 572 flow. Second operand 5 states and 914 transitions. [2022-11-21 16:30:24,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 255 transitions, 864 flow [2022-11-21 16:30:24,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 255 transitions, 864 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:30:24,759 INFO L231 Difference]: Finished difference. Result has 221 places, 196 transitions, 566 flow [2022-11-21 16:30:24,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=566, PETRI_PLACES=221, PETRI_TRANSITIONS=196} [2022-11-21 16:30:24,760 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 4 predicate places. [2022-11-21 16:30:24,760 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 196 transitions, 566 flow [2022-11-21 16:30:24,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:24,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:24,761 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] [2022-11-21 16:30:24,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 16:30:24,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:24,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:24,762 INFO L85 PathProgramCache]: Analyzing trace with hash 140227575, now seen corresponding path program 1 times [2022-11-21 16:30:24,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:24,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654233304] [2022-11-21 16:30:24,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:24,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:24,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:24,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654233304] [2022-11-21 16:30:24,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654233304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:24,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:24,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:30:24,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731146516] [2022-11-21 16:30:24,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:24,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:30:24,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:24,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:30:24,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:30:24,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 230 [2022-11-21 16:30:24,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 196 transitions, 566 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:24,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:24,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 230 [2022-11-21 16:30:24,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:28,175 INFO L130 PetriNetUnfolder]: 2671/15926 cut-off events. [2022-11-21 16:30:28,175 INFO L131 PetriNetUnfolder]: For 5670/5670 co-relation queries the response was YES. [2022-11-21 16:30:28,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29021 conditions, 15926 events. 2671/15926 cut-off events. For 5670/5670 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 167661 event pairs, 636 based on Foata normal form. 0/13889 useless extension candidates. Maximal degree in co-relation 14544. Up to 7997 conditions per place. [2022-11-21 16:30:28,291 INFO L137 encePairwiseOnDemand]: 223/230 looper letters, 73 selfloop transitions, 6 changer transitions 0/203 dead transitions. [2022-11-21 16:30:28,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 203 transitions, 742 flow [2022-11-21 16:30:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:30:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:30:28,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 812 transitions. [2022-11-21 16:30:28,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7060869565217391 [2022-11-21 16:30:28,294 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 812 transitions. [2022-11-21 16:30:28,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 812 transitions. [2022-11-21 16:30:28,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:28,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 812 transitions. [2022-11-21 16:30:28,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:28,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:28,300 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:28,300 INFO L175 Difference]: Start difference. First operand has 221 places, 196 transitions, 566 flow. Second operand 5 states and 812 transitions. [2022-11-21 16:30:28,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 203 transitions, 742 flow [2022-11-21 16:30:28,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 203 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:30:28,308 INFO L231 Difference]: Finished difference. Result has 202 places, 200 transitions, 609 flow [2022-11-21 16:30:28,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=609, PETRI_PLACES=202, PETRI_TRANSITIONS=200} [2022-11-21 16:30:28,309 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, -15 predicate places. [2022-11-21 16:30:28,310 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 200 transitions, 609 flow [2022-11-21 16:30:28,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:28,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:28,310 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:28,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 16:30:28,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:28,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:28,311 INFO L85 PathProgramCache]: Analyzing trace with hash -437130819, now seen corresponding path program 1 times [2022-11-21 16:30:28,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:28,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271486263] [2022-11-21 16:30:28,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:28,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:28,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:28,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271486263] [2022-11-21 16:30:28,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271486263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:28,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:28,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:30:28,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862765976] [2022-11-21 16:30:28,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:28,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:30:28,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:28,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:30:28,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:30:28,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-21 16:30:28,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 200 transitions, 609 flow. Second operand has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:28,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:28,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-21 16:30:28,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:31,504 INFO L130 PetriNetUnfolder]: 2671/15916 cut-off events. [2022-11-21 16:30:31,504 INFO L131 PetriNetUnfolder]: For 5677/5677 co-relation queries the response was YES. [2022-11-21 16:30:31,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28293 conditions, 15916 events. 2671/15916 cut-off events. For 5677/5677 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 167819 event pairs, 142 based on Foata normal form. 0/13894 useless extension candidates. Maximal degree in co-relation 27008. Up to 4844 conditions per place. [2022-11-21 16:30:31,597 INFO L137 encePairwiseOnDemand]: 218/230 looper letters, 86 selfloop transitions, 11 changer transitions 0/233 dead transitions. [2022-11-21 16:30:31,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 233 transitions, 921 flow [2022-11-21 16:30:31,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:30:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:30:31,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 887 transitions. [2022-11-21 16:30:31,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7713043478260869 [2022-11-21 16:30:31,600 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 887 transitions. [2022-11-21 16:30:31,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 887 transitions. [2022-11-21 16:30:31,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:31,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 887 transitions. [2022-11-21 16:30:31,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:31,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:31,605 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:31,605 INFO L175 Difference]: Start difference. First operand has 202 places, 200 transitions, 609 flow. Second operand 5 states and 887 transitions. [2022-11-21 16:30:31,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 233 transitions, 921 flow [2022-11-21 16:30:31,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 233 transitions, 918 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:30:31,614 INFO L231 Difference]: Finished difference. Result has 208 places, 202 transitions, 653 flow [2022-11-21 16:30:31,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=653, PETRI_PLACES=208, PETRI_TRANSITIONS=202} [2022-11-21 16:30:31,615 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, -9 predicate places. [2022-11-21 16:30:31,615 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 202 transitions, 653 flow [2022-11-21 16:30:31,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:31,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:31,616 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:31,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 16:30:31,616 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:31,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:31,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1587801453, now seen corresponding path program 1 times [2022-11-21 16:30:31,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:31,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137721364] [2022-11-21 16:30:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:31,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:31,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:31,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137721364] [2022-11-21 16:30:31,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137721364] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:30:31,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593006434] [2022-11-21 16:30:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:31,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:31,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:30:31,722 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:30:31,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:30:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:31,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:30:31,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:30:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:31,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:30:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:31,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593006434] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:30:31,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:30:31,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:30:31,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491876153] [2022-11-21 16:30:31,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:30:31,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:30:31,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:31,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:30:32,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:30:32,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-21 16:30:32,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 202 transitions, 653 flow. Second operand has 12 states, 12 states have (on average 161.16666666666666) internal successors, (1934), 12 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:32,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:32,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-21 16:30:32,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:35,360 INFO L130 PetriNetUnfolder]: 2671/15913 cut-off events. [2022-11-21 16:30:35,360 INFO L131 PetriNetUnfolder]: For 8753/8753 co-relation queries the response was YES. [2022-11-21 16:30:35,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29264 conditions, 15913 events. 2671/15913 cut-off events. For 8753/8753 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 167826 event pairs, 142 based on Foata normal form. 3/13924 useless extension candidates. Maximal degree in co-relation 27926. Up to 4751 conditions per place. [2022-11-21 16:30:35,449 INFO L137 encePairwiseOnDemand]: 218/230 looper letters, 94 selfloop transitions, 26 changer transitions 0/256 dead transitions. [2022-11-21 16:30:35,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 256 transitions, 1100 flow [2022-11-21 16:30:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:30:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:30:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2807 transitions. [2022-11-21 16:30:35,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7179028132992328 [2022-11-21 16:30:35,454 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2807 transitions. [2022-11-21 16:30:35,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2807 transitions. [2022-11-21 16:30:35,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:35,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2807 transitions. [2022-11-21 16:30:35,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 165.11764705882354) internal successors, (2807), 17 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:35,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 230.0) internal successors, (4140), 18 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:35,468 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 230.0) internal successors, (4140), 18 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:35,469 INFO L175 Difference]: Start difference. First operand has 208 places, 202 transitions, 653 flow. Second operand 17 states and 2807 transitions. [2022-11-21 16:30:35,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 256 transitions, 1100 flow [2022-11-21 16:30:35,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 256 transitions, 1100 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:30:35,479 INFO L231 Difference]: Finished difference. Result has 223 places, 212 transitions, 760 flow [2022-11-21 16:30:35,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=760, PETRI_PLACES=223, PETRI_TRANSITIONS=212} [2022-11-21 16:30:35,480 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 6 predicate places. [2022-11-21 16:30:35,480 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 212 transitions, 760 flow [2022-11-21 16:30:35,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 161.16666666666666) internal successors, (1934), 12 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:35,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:35,481 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:30:35,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:30:35,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-21 16:30:35,687 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:35,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:35,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1977203750, now seen corresponding path program 1 times [2022-11-21 16:30:35,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:35,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973071411] [2022-11-21 16:30:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:35,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:35,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:35,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973071411] [2022-11-21 16:30:35,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973071411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:30:35,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769271758] [2022-11-21 16:30:35,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:35,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:35,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:30:35,778 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:30:35,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:30:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:35,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:30:35,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:30:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:35,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:30:35,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769271758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:35,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:30:35,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:30:35,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445681235] [2022-11-21 16:30:35,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:35,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:30:35,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:35,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:30:35,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:30:35,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-21 16:30:35,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 212 transitions, 760 flow. Second operand has 6 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 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) [2022-11-21 16:30:35,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:35,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-21 16:30:35,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:39,136 INFO L130 PetriNetUnfolder]: 2671/15910 cut-off events. [2022-11-21 16:30:39,136 INFO L131 PetriNetUnfolder]: For 11560/11560 co-relation queries the response was YES. [2022-11-21 16:30:39,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29893 conditions, 15910 events. 2671/15910 cut-off events. For 11560/11560 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 167783 event pairs, 142 based on Foata normal form. 3/13921 useless extension candidates. Maximal degree in co-relation 28519. Up to 4747 conditions per place. [2022-11-21 16:30:39,240 INFO L137 encePairwiseOnDemand]: 219/230 looper letters, 84 selfloop transitions, 20 changer transitions 0/240 dead transitions. [2022-11-21 16:30:39,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 240 transitions, 1064 flow [2022-11-21 16:30:39,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:30:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:30:39,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1200 transitions. [2022-11-21 16:30:39,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7453416149068323 [2022-11-21 16:30:39,245 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1200 transitions. [2022-11-21 16:30:39,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1200 transitions. [2022-11-21 16:30:39,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:39,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1200 transitions. [2022-11-21 16:30:39,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.42857142857142) internal successors, (1200), 7 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:39,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:39,252 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:39,253 INFO L175 Difference]: Start difference. First operand has 223 places, 212 transitions, 760 flow. Second operand 7 states and 1200 transitions. [2022-11-21 16:30:39,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 240 transitions, 1064 flow [2022-11-21 16:30:39,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 240 transitions, 1006 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-21 16:30:39,273 INFO L231 Difference]: Finished difference. Result has 218 places, 209 transitions, 724 flow [2022-11-21 16:30:39,273 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=724, PETRI_PLACES=218, PETRI_TRANSITIONS=209} [2022-11-21 16:30:39,274 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 1 predicate places. [2022-11-21 16:30:39,274 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 209 transitions, 724 flow [2022-11-21 16:30:39,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 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) [2022-11-21 16:30:39,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:39,275 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:39,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 16:30:39,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:39,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:39,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:39,481 INFO L85 PathProgramCache]: Analyzing trace with hash -292452699, now seen corresponding path program 1 times [2022-11-21 16:30:39,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:39,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524551742] [2022-11-21 16:30:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:39,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:30:39,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:39,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524551742] [2022-11-21 16:30:39,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524551742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:39,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:39,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:30:39,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632042649] [2022-11-21 16:30:39,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:39,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:30:39,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:39,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:30:39,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:30:39,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-21 16:30:39,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 209 transitions, 724 flow. Second operand has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:39,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:39,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-21 16:30:39,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:42,642 INFO L130 PetriNetUnfolder]: 2671/15818 cut-off events. [2022-11-21 16:30:42,642 INFO L131 PetriNetUnfolder]: For 10971/10971 co-relation queries the response was YES. [2022-11-21 16:30:42,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31265 conditions, 15818 events. 2671/15818 cut-off events. For 10971/10971 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 166621 event pairs, 142 based on Foata normal form. 0/13994 useless extension candidates. Maximal degree in co-relation 29862. Up to 6004 conditions per place. [2022-11-21 16:30:42,734 INFO L137 encePairwiseOnDemand]: 218/230 looper letters, 90 selfloop transitions, 14 changer transitions 0/241 dead transitions. [2022-11-21 16:30:42,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 241 transitions, 1048 flow [2022-11-21 16:30:42,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:30:42,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:30:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 887 transitions. [2022-11-21 16:30:42,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7713043478260869 [2022-11-21 16:30:42,737 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 887 transitions. [2022-11-21 16:30:42,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 887 transitions. [2022-11-21 16:30:42,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:42,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 887 transitions. [2022-11-21 16:30:42,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:42,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:42,741 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:42,741 INFO L175 Difference]: Start difference. First operand has 218 places, 209 transitions, 724 flow. Second operand 5 states and 887 transitions. [2022-11-21 16:30:42,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 241 transitions, 1048 flow [2022-11-21 16:30:42,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 241 transitions, 1026 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:30:42,756 INFO L231 Difference]: Finished difference. Result has 221 places, 211 transitions, 758 flow [2022-11-21 16:30:42,756 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=758, PETRI_PLACES=221, PETRI_TRANSITIONS=211} [2022-11-21 16:30:42,756 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 4 predicate places. [2022-11-21 16:30:42,757 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 211 transitions, 758 flow [2022-11-21 16:30:42,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:42,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:42,757 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:42,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 16:30:42,758 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:42,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:42,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1996025130, now seen corresponding path program 1 times [2022-11-21 16:30:42,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:42,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688779710] [2022-11-21 16:30:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:42,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:42,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:42,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688779710] [2022-11-21 16:30:42,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688779710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:30:42,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071805440] [2022-11-21 16:30:42,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:42,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:42,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:30:42,852 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:30:42,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 16:30:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:42,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:30:42,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:30:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:43,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:30:43,122 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:43,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071805440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:30:43,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:30:43,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:30:43,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728647221] [2022-11-21 16:30:43,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:30:43,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:30:43,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:43,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:30:43,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:30:43,126 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-21 16:30:43,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 211 transitions, 758 flow. Second operand has 12 states, 12 states have (on average 161.33333333333334) internal successors, (1936), 12 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:43,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:43,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-21 16:30:43,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:46,808 INFO L130 PetriNetUnfolder]: 2671/15803 cut-off events. [2022-11-21 16:30:46,808 INFO L131 PetriNetUnfolder]: For 16090/16090 co-relation queries the response was YES. [2022-11-21 16:30:46,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31836 conditions, 15803 events. 2671/15803 cut-off events. For 16090/16090 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 166382 event pairs, 142 based on Foata normal form. 15/14488 useless extension candidates. Maximal degree in co-relation 30383. Up to 4679 conditions per place. [2022-11-21 16:30:46,895 INFO L137 encePairwiseOnDemand]: 218/230 looper letters, 98 selfloop transitions, 29 changer transitions 0/264 dead transitions. [2022-11-21 16:30:46,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 264 transitions, 1217 flow [2022-11-21 16:30:46,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:30:46,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:30:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2807 transitions. [2022-11-21 16:30:46,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7179028132992328 [2022-11-21 16:30:46,899 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2807 transitions. [2022-11-21 16:30:46,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2807 transitions. [2022-11-21 16:30:46,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:46,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2807 transitions. [2022-11-21 16:30:46,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 165.11764705882354) internal successors, (2807), 17 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:46,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 230.0) internal successors, (4140), 18 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:46,911 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 230.0) internal successors, (4140), 18 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:46,911 INFO L175 Difference]: Start difference. First operand has 221 places, 211 transitions, 758 flow. Second operand 17 states and 2807 transitions. [2022-11-21 16:30:46,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 264 transitions, 1217 flow [2022-11-21 16:30:46,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 264 transitions, 1217 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:30:46,936 INFO L231 Difference]: Finished difference. Result has 236 places, 221 transitions, 883 flow [2022-11-21 16:30:46,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=883, PETRI_PLACES=236, PETRI_TRANSITIONS=221} [2022-11-21 16:30:46,937 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 19 predicate places. [2022-11-21 16:30:46,937 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 221 transitions, 883 flow [2022-11-21 16:30:46,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 161.33333333333334) internal successors, (1936), 12 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:46,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:46,938 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:30:46,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 16:30:47,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-21 16:30:47,144 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:47,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:47,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1747237823, now seen corresponding path program 1 times [2022-11-21 16:30:47,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:47,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064681853] [2022-11-21 16:30:47,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:47,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:47,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:47,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064681853] [2022-11-21 16:30:47,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064681853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:30:47,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132460713] [2022-11-21 16:30:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:47,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:47,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:30:47,239 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:30:47,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 16:30:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:47,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:30:47,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:30:47,440 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:47,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:30:47,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132460713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:47,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:30:47,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:30:47,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521223195] [2022-11-21 16:30:47,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:47,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:30:47,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:47,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:30:47,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:30:47,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-21 16:30:47,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 221 transitions, 883 flow. Second operand has 6 states, 6 states have (on average 161.16666666666666) internal successors, (967), 6 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:47,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:47,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-21 16:30:47,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:50,910 INFO L130 PetriNetUnfolder]: 2671/15788 cut-off events. [2022-11-21 16:30:50,910 INFO L131 PetriNetUnfolder]: For 20224/20224 co-relation queries the response was YES. [2022-11-21 16:30:50,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32473 conditions, 15788 events. 2671/15788 cut-off events. For 20224/20224 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 166141 event pairs, 142 based on Foata normal form. 15/14473 useless extension candidates. Maximal degree in co-relation 30982. Up to 4659 conditions per place. [2022-11-21 16:30:51,016 INFO L137 encePairwiseOnDemand]: 219/230 looper letters, 88 selfloop transitions, 23 changer transitions 0/248 dead transitions. [2022-11-21 16:30:51,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 248 transitions, 1199 flow [2022-11-21 16:30:51,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:30:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:30:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1200 transitions. [2022-11-21 16:30:51,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7453416149068323 [2022-11-21 16:30:51,019 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1200 transitions. [2022-11-21 16:30:51,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1200 transitions. [2022-11-21 16:30:51,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:51,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1200 transitions. [2022-11-21 16:30:51,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.42857142857142) internal successors, (1200), 7 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:51,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:51,023 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:51,023 INFO L175 Difference]: Start difference. First operand has 236 places, 221 transitions, 883 flow. Second operand 7 states and 1200 transitions. [2022-11-21 16:30:51,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 248 transitions, 1199 flow [2022-11-21 16:30:51,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 248 transitions, 1120 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-21 16:30:51,059 INFO L231 Difference]: Finished difference. Result has 230 places, 218 transitions, 832 flow [2022-11-21 16:30:51,059 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=832, PETRI_PLACES=230, PETRI_TRANSITIONS=218} [2022-11-21 16:30:51,060 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 13 predicate places. [2022-11-21 16:30:51,060 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 218 transitions, 832 flow [2022-11-21 16:30:51,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.16666666666666) internal successors, (967), 6 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:51,061 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:51,061 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:30:51,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-21 16:30:51,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:51,273 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:51,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:51,273 INFO L85 PathProgramCache]: Analyzing trace with hash -829647733, now seen corresponding path program 1 times [2022-11-21 16:30:51,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:51,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958020995] [2022-11-21 16:30:51,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:51,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:51,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:30:51,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:51,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958020995] [2022-11-21 16:30:51,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958020995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:51,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:51,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:30:51,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147373403] [2022-11-21 16:30:51,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:51,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:30:51,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:51,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:30:51,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:30:51,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-21 16:30:51,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 218 transitions, 832 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:51,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:51,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-21 16:30:51,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:30:54,901 INFO L130 PetriNetUnfolder]: 2671/15525 cut-off events. [2022-11-21 16:30:54,901 INFO L131 PetriNetUnfolder]: For 16421/16421 co-relation queries the response was YES. [2022-11-21 16:30:54,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33757 conditions, 15525 events. 2671/15525 cut-off events. For 16421/16421 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 161964 event pairs, 142 based on Foata normal form. 0/14705 useless extension candidates. Maximal degree in co-relation 32267. Up to 6004 conditions per place. [2022-11-21 16:30:54,978 INFO L137 encePairwiseOnDemand]: 218/230 looper letters, 94 selfloop transitions, 17 changer transitions 0/249 dead transitions. [2022-11-21 16:30:54,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 249 transitions, 1168 flow [2022-11-21 16:30:54,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:30:54,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:30:54,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 887 transitions. [2022-11-21 16:30:54,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7713043478260869 [2022-11-21 16:30:54,980 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 887 transitions. [2022-11-21 16:30:54,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 887 transitions. [2022-11-21 16:30:54,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:30:54,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 887 transitions. [2022-11-21 16:30:54,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:54,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:54,983 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:54,983 INFO L175 Difference]: Start difference. First operand has 230 places, 218 transitions, 832 flow. Second operand 5 states and 887 transitions. [2022-11-21 16:30:54,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 249 transitions, 1168 flow [2022-11-21 16:30:55,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 249 transitions, 1143 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:30:55,013 INFO L231 Difference]: Finished difference. Result has 233 places, 220 transitions, 872 flow [2022-11-21 16:30:55,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=872, PETRI_PLACES=233, PETRI_TRANSITIONS=220} [2022-11-21 16:30:55,014 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 16 predicate places. [2022-11-21 16:30:55,014 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 220 transitions, 872 flow [2022-11-21 16:30:55,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:55,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:30:55,015 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 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] [2022-11-21 16:30:55,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-21 16:30:55,015 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:30:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:55,016 INFO L85 PathProgramCache]: Analyzing trace with hash 733062255, now seen corresponding path program 1 times [2022-11-21 16:30:55,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:30:55,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535819931] [2022-11-21 16:30:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:55,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:30:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 74 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:55,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:30:55,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535819931] [2022-11-21 16:30:55,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535819931] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:30:55,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738443956] [2022-11-21 16:30:55,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:55,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:30:55,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:30:55,909 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:30:55,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 16:30:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:56,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 16:30:56,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:30:56,233 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:30:56,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 16:30:56,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:30:56,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:30:56,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:30:56,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:30:57,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:30:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 86 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:57,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:30:57,287 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_356 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_356) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 3 |c_ULTIMATE.start_main_#t~post39#1|))) is different from false [2022-11-21 16:30:57,312 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_356 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_356) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2022-11-21 16:30:57,383 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_356 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_356) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ |c_ULTIMATE.start_main_#t~post39#1| 4))) is different from false [2022-11-21 16:30:57,552 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_356 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_356) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 5 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2022-11-21 16:30:57,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-21 16:30:57,880 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 16:30:57,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-21 16:30:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 82 not checked. [2022-11-21 16:30:57,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738443956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:30:57,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:30:57,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 43 [2022-11-21 16:30:57,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134323454] [2022-11-21 16:30:57,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:30:57,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-21 16:30:57,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:30:57,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-21 16:30:57,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1246, Unknown=14, NotChecked=308, Total=1806 [2022-11-21 16:30:57,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 230 [2022-11-21 16:30:57,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 220 transitions, 872 flow. Second operand has 43 states, 43 states have (on average 130.02325581395348) internal successors, (5591), 43 states have internal predecessors, (5591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:57,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:30:57,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 230 [2022-11-21 16:30:57,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:31:03,285 INFO L130 PetriNetUnfolder]: 2745/16427 cut-off events. [2022-11-21 16:31:03,285 INFO L131 PetriNetUnfolder]: For 26787/26787 co-relation queries the response was YES. [2022-11-21 16:31:03,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37340 conditions, 16427 events. 2745/16427 cut-off events. For 26787/26787 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 173200 event pairs, 637 based on Foata normal form. 1/16079 useless extension candidates. Maximal degree in co-relation 34139. Up to 8006 conditions per place. [2022-11-21 16:31:03,385 INFO L137 encePairwiseOnDemand]: 212/230 looper letters, 176 selfloop transitions, 36 changer transitions 0/319 dead transitions. [2022-11-21 16:31:03,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 319 transitions, 1748 flow [2022-11-21 16:31:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 16:31:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-21 16:31:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3335 transitions. [2022-11-21 16:31:03,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.58 [2022-11-21 16:31:03,390 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3335 transitions. [2022-11-21 16:31:03,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3335 transitions. [2022-11-21 16:31:03,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:31:03,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3335 transitions. [2022-11-21 16:31:03,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 133.4) internal successors, (3335), 25 states have internal predecessors, (3335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:03,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 230.0) internal successors, (5980), 26 states have internal predecessors, (5980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:03,405 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 230.0) internal successors, (5980), 26 states have internal predecessors, (5980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:03,405 INFO L175 Difference]: Start difference. First operand has 233 places, 220 transitions, 872 flow. Second operand 25 states and 3335 transitions. [2022-11-21 16:31:03,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 319 transitions, 1748 flow [2022-11-21 16:31:03,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 319 transitions, 1748 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:31:03,478 INFO L231 Difference]: Finished difference. Result has 274 places, 250 transitions, 1251 flow [2022-11-21 16:31:03,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1251, PETRI_PLACES=274, PETRI_TRANSITIONS=250} [2022-11-21 16:31:03,479 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 57 predicate places. [2022-11-21 16:31:03,479 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 250 transitions, 1251 flow [2022-11-21 16:31:03,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 130.02325581395348) internal successors, (5591), 43 states have internal predecessors, (5591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:03,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:03,481 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:31:03,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 16:31:03,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-21 16:31:03,689 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:31:03,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:03,689 INFO L85 PathProgramCache]: Analyzing trace with hash 945559906, now seen corresponding path program 1 times [2022-11-21 16:31:03,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:03,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853697905] [2022-11-21 16:31:03,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:03,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:31:03,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:03,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853697905] [2022-11-21 16:31:03,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853697905] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:31:03,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144686100] [2022-11-21 16:31:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:03,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:31:03,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:31:03,831 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:31:03,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 16:31:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:03,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:31:03,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:31:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:31:04,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:31:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:31:04,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144686100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:31:04,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:31:04,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:31:04,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184324644] [2022-11-21 16:31:04,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:31:04,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:31:04,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:04,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:31:04,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:31:04,118 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-21 16:31:04,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 250 transitions, 1251 flow. Second operand has 12 states, 12 states have (on average 162.33333333333334) internal successors, (1948), 12 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:04,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:04,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-21 16:31:04,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:31:10,209 INFO L130 PetriNetUnfolder]: 3890/22733 cut-off events. [2022-11-21 16:31:10,210 INFO L131 PetriNetUnfolder]: For 51977/51977 co-relation queries the response was YES. [2022-11-21 16:31:10,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53656 conditions, 22733 events. 3890/22733 cut-off events. For 51977/51977 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 258689 event pairs, 1 based on Foata normal form. 504/22551 useless extension candidates. Maximal degree in co-relation 50426. Up to 3879 conditions per place. [2022-11-21 16:31:10,416 INFO L137 encePairwiseOnDemand]: 217/230 looper letters, 142 selfloop transitions, 43 changer transitions 2/335 dead transitions. [2022-11-21 16:31:10,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 335 transitions, 2049 flow [2022-11-21 16:31:10,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:31:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:31:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2995 transitions. [2022-11-21 16:31:10,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7234299516908212 [2022-11-21 16:31:10,420 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2995 transitions. [2022-11-21 16:31:10,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2995 transitions. [2022-11-21 16:31:10,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:31:10,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2995 transitions. [2022-11-21 16:31:10,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 166.38888888888889) internal successors, (2995), 18 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:10,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 230.0) internal successors, (4370), 19 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:10,426 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 230.0) internal successors, (4370), 19 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:10,426 INFO L175 Difference]: Start difference. First operand has 274 places, 250 transitions, 1251 flow. Second operand 18 states and 2995 transitions. [2022-11-21 16:31:10,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 335 transitions, 2049 flow [2022-11-21 16:31:10,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 335 transitions, 2042 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-21 16:31:10,558 INFO L231 Difference]: Finished difference. Result has 293 places, 266 transitions, 1493 flow [2022-11-21 16:31:10,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1493, PETRI_PLACES=293, PETRI_TRANSITIONS=266} [2022-11-21 16:31:10,559 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 76 predicate places. [2022-11-21 16:31:10,559 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 266 transitions, 1493 flow [2022-11-21 16:31:10,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 162.33333333333334) internal successors, (1948), 12 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:10,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:10,560 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:31:10,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 16:31:10,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:31:10,761 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:31:10,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:10,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1152333349, now seen corresponding path program 1 times [2022-11-21 16:31:10,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:10,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638053128] [2022-11-21 16:31:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:10,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:31:10,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:10,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638053128] [2022-11-21 16:31:10,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638053128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:31:10,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967809657] [2022-11-21 16:31:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:10,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:31:10,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:31:10,873 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:31:10,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 16:31:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:11,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:31:11,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:31:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:31:11,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:31:11,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967809657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:31:11,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:31:11,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:31:11,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326304179] [2022-11-21 16:31:11,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:31:11,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:31:11,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:11,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:31:11,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:31:11,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 230 [2022-11-21 16:31:11,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 266 transitions, 1493 flow. Second operand has 6 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:11,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:11,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 230 [2022-11-21 16:31:11,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:31:16,808 INFO L130 PetriNetUnfolder]: 3884/22125 cut-off events. [2022-11-21 16:31:16,808 INFO L131 PetriNetUnfolder]: For 68714/68714 co-relation queries the response was YES. [2022-11-21 16:31:16,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56459 conditions, 22125 events. 3884/22125 cut-off events. For 68714/68714 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 248828 event pairs, 777 based on Foata normal form. 597/22036 useless extension candidates. Maximal degree in co-relation 53089. Up to 4617 conditions per place. [2022-11-21 16:31:17,022 INFO L137 encePairwiseOnDemand]: 219/230 looper letters, 107 selfloop transitions, 36 changer transitions 0/291 dead transitions. [2022-11-21 16:31:17,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 291 transitions, 1870 flow [2022-11-21 16:31:17,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:31:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:31:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1201 transitions. [2022-11-21 16:31:17,026 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7459627329192546 [2022-11-21 16:31:17,026 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1201 transitions. [2022-11-21 16:31:17,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1201 transitions. [2022-11-21 16:31:17,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:31:17,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1201 transitions. [2022-11-21 16:31:17,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.57142857142858) internal successors, (1201), 7 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:17,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:17,030 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:17,031 INFO L175 Difference]: Start difference. First operand has 293 places, 266 transitions, 1493 flow. Second operand 7 states and 1201 transitions. [2022-11-21 16:31:17,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 291 transitions, 1870 flow [2022-11-21 16:31:17,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 291 transitions, 1761 flow, removed 11 selfloop flow, removed 6 redundant places. [2022-11-21 16:31:17,232 INFO L231 Difference]: Finished difference. Result has 288 places, 262 transitions, 1429 flow [2022-11-21 16:31:17,233 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1429, PETRI_PLACES=288, PETRI_TRANSITIONS=262} [2022-11-21 16:31:17,233 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 71 predicate places. [2022-11-21 16:31:17,233 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 262 transitions, 1429 flow [2022-11-21 16:31:17,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:17,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:17,234 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:31:17,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 16:31:17,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-21 16:31:17,440 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:31:17,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:17,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1951263152, now seen corresponding path program 1 times [2022-11-21 16:31:17,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:17,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780632737] [2022-11-21 16:31:17,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:17,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:31:17,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:17,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780632737] [2022-11-21 16:31:17,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780632737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:31:17,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073530277] [2022-11-21 16:31:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:17,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:31:17,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:31:17,559 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:31:17,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b34f4a2-4156-4078-9881-2e4a3b05c193/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 16:31:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:17,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:31:17,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:31:17,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:31:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:31:17,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:31:18,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:31:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:31:18,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073530277] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:31:18,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:31:18,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 19 [2022-11-21 16:31:18,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574985775] [2022-11-21 16:31:18,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:31:18,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:31:18,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:18,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:31:18,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:31:18,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 230 [2022-11-21 16:31:18,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 262 transitions, 1429 flow. Second operand has 19 states, 19 states have (on average 141.31578947368422) internal successors, (2685), 19 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:18,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:18,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 230 [2022-11-21 16:31:18,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand