./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8 --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 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --- 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-e04fb08 [2022-11-16 11:25:08,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:25:08,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:25:08,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:25:08,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:25:08,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:25:08,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:25:08,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:25:08,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:25:08,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:25:08,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:25:08,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:25:08,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:25:08,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:25:08,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:25:08,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:25:08,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:25:08,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:25:08,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:25:08,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:25:08,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:25:08,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:25:08,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:25:08,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:25:08,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:25:08,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:25:08,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:25:08,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:25:08,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:25:08,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:25:08,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:25:08,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:25:08,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:25:08,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:25:08,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:25:08,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:25:08,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:25:08,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:25:08,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:25:08,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:25:08,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:25:08,148 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:25:08,188 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:25:08,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:25:08,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:25:08,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:25:08,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:25:08,191 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:25:08,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:25:08,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:25:08,192 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:25:08,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:25:08,193 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:25:08,193 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:25:08,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:25:08,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:25:08,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:25:08,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:25:08,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:25:08,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:25:08,195 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:25:08,195 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:25:08,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:25:08,196 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:25:08,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:25:08,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:25:08,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:25:08,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:25:08,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:25:08,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:25:08,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:25:08,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:25:08,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:25:08,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:25:08,200 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:25:08,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:25:08,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:25:08,200 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_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 [2022-11-16 11:25:08,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:25:08,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:25:08,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:25:08,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:25:08,504 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:25:08,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2022-11-16 11:25:08,567 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/data/f92f45902/27b3cc94615b482ca013645044bd2ad3/FLAG94e9d530a [2022-11-16 11:25:09,062 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:25:09,062 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2022-11-16 11:25:09,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/data/f92f45902/27b3cc94615b482ca013645044bd2ad3/FLAG94e9d530a [2022-11-16 11:25:09,388 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/data/f92f45902/27b3cc94615b482ca013645044bd2ad3 [2022-11-16 11:25:09,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:25:09,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:25:09,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:25:09,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:25:09,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:25:09,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:25:09" (1/1) ... [2022-11-16 11:25:09,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38087737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:09, skipping insertion in model container [2022-11-16 11:25:09,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:25:09" (1/1) ... [2022-11-16 11:25:09,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:25:09,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:25:09,940 WARN L229 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_66d690c5-59e9-4078-8b1c-bad0cc093112/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i[30176,30189] [2022-11-16 11:25:09,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:25:09,979 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:25:10,023 WARN L229 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_66d690c5-59e9-4078-8b1c-bad0cc093112/sv-benchmarks/c/goblint-regression/28-race_reach_05-lockfuns_racefree.i[30176,30189] [2022-11-16 11:25:10,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:25:10,070 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:25:10,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:10 WrapperNode [2022-11-16 11:25:10,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:25:10,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:25:10,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:25:10,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:25:10,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:10" (1/1) ... [2022-11-16 11:25:10,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:10" (1/1) ... [2022-11-16 11:25:10,137 INFO L138 Inliner]: procedures = 172, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2022-11-16 11:25:10,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:25:10,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:25:10,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:25:10,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:25:10,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:10" (1/1) ... [2022-11-16 11:25:10,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:10" (1/1) ... [2022-11-16 11:25:10,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:10" (1/1) ... [2022-11-16 11:25:10,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:10" (1/1) ... [2022-11-16 11:25:10,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:10" (1/1) ... [2022-11-16 11:25:10,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:10" (1/1) ... [2022-11-16 11:25:10,177 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:10" (1/1) ... [2022-11-16 11:25:10,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:10" (1/1) ... [2022-11-16 11:25:10,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:25:10,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:25:10,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:25:10,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:25:10,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:10" (1/1) ... [2022-11-16 11:25:10,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:25:10,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:10,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:25:10,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:25:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:25:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:25:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:25:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:25:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:25:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:25:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:25:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:25:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:25:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:25:10,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:25:10,279 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:25:10,438 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:25:10,440 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:25:10,771 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:25:10,779 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:25:10,780 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 11:25:10,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:25:10 BoogieIcfgContainer [2022-11-16 11:25:10,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:25:10,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:25:10,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:25:10,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:25:10,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:25:09" (1/3) ... [2022-11-16 11:25:10,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0e455b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:25:10, skipping insertion in model container [2022-11-16 11:25:10,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:10" (2/3) ... [2022-11-16 11:25:10,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0e455b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:25:10, skipping insertion in model container [2022-11-16 11:25:10,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:25:10" (3/3) ... [2022-11-16 11:25:10,807 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2022-11-16 11:25:10,817 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:25:10,836 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:25:10,836 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 11:25:10,836 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:25:10,920 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:25:10,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 130 transitions, 268 flow [2022-11-16 11:25:11,075 INFO L130 PetriNetUnfolder]: 17/170 cut-off events. [2022-11-16 11:25:11,075 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:25:11,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 170 events. 17/170 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 426 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2022-11-16 11:25:11,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 130 transitions, 268 flow [2022-11-16 11:25:11,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 127 transitions, 262 flow [2022-11-16 11:25:11,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:25:11,118 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;@4d8a87c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:25:11,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-16 11:25:11,135 INFO L130 PetriNetUnfolder]: 1/52 cut-off events. [2022-11-16 11:25:11,135 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:25:11,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:11,136 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] [2022-11-16 11:25:11,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:25:11,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:11,143 INFO L85 PathProgramCache]: Analyzing trace with hash 807803545, now seen corresponding path program 1 times [2022-11-16 11:25:11,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:11,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779771898] [2022-11-16 11:25:11,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:11,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:11,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:11,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779771898] [2022-11-16 11:25:11,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779771898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:11,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:11,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:11,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392194843] [2022-11-16 11:25:11,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:11,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:11,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:11,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:11,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:11,661 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 130 [2022-11-16 11:25:11,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 127 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:11,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:11,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 130 [2022-11-16 11:25:11,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:11,755 INFO L130 PetriNetUnfolder]: 0/117 cut-off events. [2022-11-16 11:25:11,755 INFO L131 PetriNetUnfolder]: For 12/29 co-relation queries the response was YES. [2022-11-16 11:25:11,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 117 events. 0/117 cut-off events. For 12/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 37/146 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-16 11:25:11,758 INFO L137 encePairwiseOnDemand]: 112/130 looper letters, 10 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2022-11-16 11:25:11,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 115 transitions, 266 flow [2022-11-16 11:25:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 567 transitions. [2022-11-16 11:25:11,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8723076923076923 [2022-11-16 11:25:11,777 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 567 transitions. [2022-11-16 11:25:11,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 567 transitions. [2022-11-16 11:25:11,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:11,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 567 transitions. [2022-11-16 11:25:11,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:11,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 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) [2022-11-16 11:25:11,796 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 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) [2022-11-16 11:25:11,798 INFO L175 Difference]: Start difference. First operand has 119 places, 127 transitions, 262 flow. Second operand 5 states and 567 transitions. [2022-11-16 11:25:11,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 115 transitions, 266 flow [2022-11-16 11:25:11,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 115 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:25:11,822 INFO L231 Difference]: Finished difference. Result has 121 places, 113 transitions, 246 flow [2022-11-16 11:25:11,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=121, PETRI_TRANSITIONS=113} [2022-11-16 11:25:11,829 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 2 predicate places. [2022-11-16 11:25:11,830 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 113 transitions, 246 flow [2022-11-16 11:25:11,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:11,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:11,832 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] [2022-11-16 11:25:11,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:25:11,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:25:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:11,835 INFO L85 PathProgramCache]: Analyzing trace with hash 271965116, now seen corresponding path program 1 times [2022-11-16 11:25:11,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:11,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329037016] [2022-11-16 11:25:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:11,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:12,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:12,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329037016] [2022-11-16 11:25:12,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329037016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:12,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:12,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:12,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644058437] [2022-11-16 11:25:12,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:12,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:12,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:12,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:12,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:12,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 130 [2022-11-16 11:25:12,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 113 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:12,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:12,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 130 [2022-11-16 11:25:12,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:12,275 INFO L130 PetriNetUnfolder]: 7/209 cut-off events. [2022-11-16 11:25:12,275 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 11:25:12,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 209 events. 7/209 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 597 event pairs, 4 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 195. Up to 11 conditions per place. [2022-11-16 11:25:12,281 INFO L137 encePairwiseOnDemand]: 124/130 looper letters, 10 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2022-11-16 11:25:12,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 276 flow [2022-11-16 11:25:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2022-11-16 11:25:12,286 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8323076923076923 [2022-11-16 11:25:12,287 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2022-11-16 11:25:12,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2022-11-16 11:25:12,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:12,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2022-11-16 11:25:12,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:12,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 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) [2022-11-16 11:25:12,294 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 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) [2022-11-16 11:25:12,294 INFO L175 Difference]: Start difference. First operand has 121 places, 113 transitions, 246 flow. Second operand 5 states and 541 transitions. [2022-11-16 11:25:12,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 276 flow [2022-11-16 11:25:12,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 114 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:25:12,302 INFO L231 Difference]: Finished difference. Result has 119 places, 111 transitions, 242 flow [2022-11-16 11:25:12,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=119, PETRI_TRANSITIONS=111} [2022-11-16 11:25:12,303 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 0 predicate places. [2022-11-16 11:25:12,304 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 111 transitions, 242 flow [2022-11-16 11:25:12,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:12,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:12,305 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:12,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:25:12,306 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:25:12,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:12,308 INFO L85 PathProgramCache]: Analyzing trace with hash -887905153, now seen corresponding path program 1 times [2022-11-16 11:25:12,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:12,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770094218] [2022-11-16 11:25:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:12,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:25:12,371 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:25:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:25:12,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:25:12,436 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:25:12,437 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-16 11:25:12,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-16 11:25:12,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-16 11:25:12,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-16 11:25:12,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-16 11:25:12,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-16 11:25:12,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-16 11:25:12,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-16 11:25:12,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-16 11:25:12,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-16 11:25:12,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-16 11:25:12,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-16 11:25:12,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-16 11:25:12,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:25:12,445 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 11:25:12,449 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:25:12,449 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:25:12,499 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:25:12,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 173 transitions, 364 flow [2022-11-16 11:25:12,549 INFO L130 PetriNetUnfolder]: 31/290 cut-off events. [2022-11-16 11:25:12,549 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:25:12,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 31/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 911 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2022-11-16 11:25:12,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 173 transitions, 364 flow [2022-11-16 11:25:12,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 173 transitions, 364 flow [2022-11-16 11:25:12,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:25:12,559 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;@4d8a87c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:25:12,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 11:25:12,565 INFO L130 PetriNetUnfolder]: 1/53 cut-off events. [2022-11-16 11:25:12,565 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:25:12,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:12,566 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] [2022-11-16 11:25:12,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:25:12,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:12,567 INFO L85 PathProgramCache]: Analyzing trace with hash 821985570, now seen corresponding path program 1 times [2022-11-16 11:25:12,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:12,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125731101] [2022-11-16 11:25:12,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:12,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:12,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:12,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125731101] [2022-11-16 11:25:12,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125731101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:12,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:12,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:12,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14275477] [2022-11-16 11:25:12,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:12,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:12,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 173 [2022-11-16 11:25:12,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 173 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:12,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:12,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 173 [2022-11-16 11:25:12,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:12,785 INFO L130 PetriNetUnfolder]: 2/236 cut-off events. [2022-11-16 11:25:12,785 INFO L131 PetriNetUnfolder]: For 34/104 co-relation queries the response was YES. [2022-11-16 11:25:12,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 236 events. 2/236 cut-off events. For 34/104 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 576 event pairs, 0 based on Foata normal form. 106/318 useless extension candidates. Maximal degree in co-relation 156. Up to 21 conditions per place. [2022-11-16 11:25:12,787 INFO L137 encePairwiseOnDemand]: 149/173 looper letters, 19 selfloop transitions, 4 changer transitions 0/162 dead transitions. [2022-11-16 11:25:12,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 162 transitions, 388 flow [2022-11-16 11:25:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:12,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 757 transitions. [2022-11-16 11:25:12,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8751445086705202 [2022-11-16 11:25:12,790 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 757 transitions. [2022-11-16 11:25:12,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 757 transitions. [2022-11-16 11:25:12,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:12,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 757 transitions. [2022-11-16 11:25:12,793 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) [2022-11-16 11:25:12,796 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) [2022-11-16 11:25:12,796 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) [2022-11-16 11:25:12,797 INFO L175 Difference]: Start difference. First operand has 159 places, 173 transitions, 364 flow. Second operand 5 states and 757 transitions. [2022-11-16 11:25:12,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 162 transitions, 388 flow [2022-11-16 11:25:12,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 162 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:25:12,805 INFO L231 Difference]: Finished difference. Result has 165 places, 158 transitions, 360 flow [2022-11-16 11:25:12,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=165, PETRI_TRANSITIONS=158} [2022-11-16 11:25:12,809 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 6 predicate places. [2022-11-16 11:25:12,810 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 158 transitions, 360 flow [2022-11-16 11:25:12,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:12,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:12,816 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] [2022-11-16 11:25:12,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:25:12,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:25:12,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:12,817 INFO L85 PathProgramCache]: Analyzing trace with hash 744705248, now seen corresponding path program 1 times [2022-11-16 11:25:12,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:12,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519768594] [2022-11-16 11:25:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:12,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:12,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:12,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519768594] [2022-11-16 11:25:12,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519768594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:12,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:12,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:12,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386549557] [2022-11-16 11:25:12,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:12,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:12,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:12,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:12,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:12,949 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 173 [2022-11-16 11:25:12,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 158 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:12,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:12,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 173 [2022-11-16 11:25:12,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:13,289 INFO L130 PetriNetUnfolder]: 170/1205 cut-off events. [2022-11-16 11:25:13,289 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-11-16 11:25:13,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 1205 events. 170/1205 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8691 event pairs, 76 based on Foata normal form. 0/1055 useless extension candidates. Maximal degree in co-relation 1548. Up to 207 conditions per place. [2022-11-16 11:25:13,300 INFO L137 encePairwiseOnDemand]: 166/173 looper letters, 36 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2022-11-16 11:25:13,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 181 transitions, 508 flow [2022-11-16 11:25:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 726 transitions. [2022-11-16 11:25:13,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8393063583815029 [2022-11-16 11:25:13,303 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 726 transitions. [2022-11-16 11:25:13,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 726 transitions. [2022-11-16 11:25:13,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:13,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 726 transitions. [2022-11-16 11:25:13,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:13,307 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) [2022-11-16 11:25:13,308 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) [2022-11-16 11:25:13,308 INFO L175 Difference]: Start difference. First operand has 165 places, 158 transitions, 360 flow. Second operand 5 states and 726 transitions. [2022-11-16 11:25:13,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 181 transitions, 508 flow [2022-11-16 11:25:13,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 181 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:25:13,313 INFO L231 Difference]: Finished difference. Result has 171 places, 163 transitions, 407 flow [2022-11-16 11:25:13,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=171, PETRI_TRANSITIONS=163} [2022-11-16 11:25:13,314 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 12 predicate places. [2022-11-16 11:25:13,314 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 163 transitions, 407 flow [2022-11-16 11:25:13,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:13,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:13,315 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:13,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:25:13,316 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:25:13,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:13,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1389149599, now seen corresponding path program 1 times [2022-11-16 11:25:13,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:13,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498516118] [2022-11-16 11:25:13,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:13,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:25:13,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:13,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498516118] [2022-11-16 11:25:13,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498516118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:13,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:13,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:13,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984504966] [2022-11-16 11:25:13,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:13,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:13,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:13,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:13,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 173 [2022-11-16 11:25:13,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 163 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:13,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:13,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 173 [2022-11-16 11:25:13,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:13,502 INFO L130 PetriNetUnfolder]: 5/368 cut-off events. [2022-11-16 11:25:13,502 INFO L131 PetriNetUnfolder]: For 74/181 co-relation queries the response was YES. [2022-11-16 11:25:13,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 368 events. 5/368 cut-off events. For 74/181 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1252 event pairs, 0 based on Foata normal form. 16/350 useless extension candidates. Maximal degree in co-relation 313. Up to 16 conditions per place. [2022-11-16 11:25:13,505 INFO L137 encePairwiseOnDemand]: 167/173 looper letters, 11 selfloop transitions, 8 changer transitions 0/163 dead transitions. [2022-11-16 11:25:13,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 163 transitions, 443 flow [2022-11-16 11:25:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 712 transitions. [2022-11-16 11:25:13,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823121387283237 [2022-11-16 11:25:13,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 712 transitions. [2022-11-16 11:25:13,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 712 transitions. [2022-11-16 11:25:13,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:13,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 712 transitions. [2022-11-16 11:25:13,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.4) internal successors, (712), 5 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:13,513 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) [2022-11-16 11:25:13,515 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) [2022-11-16 11:25:13,515 INFO L175 Difference]: Start difference. First operand has 171 places, 163 transitions, 407 flow. Second operand 5 states and 712 transitions. [2022-11-16 11:25:13,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 163 transitions, 443 flow [2022-11-16 11:25:13,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 163 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:25:13,521 INFO L231 Difference]: Finished difference. Result has 174 places, 163 transitions, 424 flow [2022-11-16 11:25:13,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=424, PETRI_PLACES=174, PETRI_TRANSITIONS=163} [2022-11-16 11:25:13,525 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2022-11-16 11:25:13,526 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 163 transitions, 424 flow [2022-11-16 11:25:13,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:13,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:13,527 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:25:13,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:25:13,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:25:13,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:13,529 INFO L85 PathProgramCache]: Analyzing trace with hash -113964098, now seen corresponding path program 1 times [2022-11-16 11:25:13,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:13,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012782240] [2022-11-16 11:25:13,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:13,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:13,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:13,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012782240] [2022-11-16 11:25:13,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012782240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:13,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595658041] [2022-11-16 11:25:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:13,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:13,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:13,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:13,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:25:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:13,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:25:13,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:13,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:13,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:25:13,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595658041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:13,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:25:13,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:25:13,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403943055] [2022-11-16 11:25:13,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:13,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:25:13,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:13,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:25:13,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:25:13,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 173 [2022-11-16 11:25:13,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 163 transitions, 424 flow. Second operand has 6 states, 6 states have (on average 141.66666666666666) internal successors, (850), 6 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:13,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:13,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 173 [2022-11-16 11:25:13,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:14,148 INFO L130 PetriNetUnfolder]: 5/367 cut-off events. [2022-11-16 11:25:14,149 INFO L131 PetriNetUnfolder]: For 82/181 co-relation queries the response was YES. [2022-11-16 11:25:14,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 367 events. 5/367 cut-off events. For 82/181 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1249 event pairs, 0 based on Foata normal form. 9/342 useless extension candidates. Maximal degree in co-relation 314. Up to 19 conditions per place. [2022-11-16 11:25:14,151 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 15 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2022-11-16 11:25:14,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 165 transitions, 468 flow [2022-11-16 11:25:14,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:25:14,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:25:14,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 995 transitions. [2022-11-16 11:25:14,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216350123864574 [2022-11-16 11:25:14,155 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 995 transitions. [2022-11-16 11:25:14,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 995 transitions. [2022-11-16 11:25:14,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:14,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 995 transitions. [2022-11-16 11:25:14,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 142.14285714285714) internal successors, (995), 7 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:14,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:14,162 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:14,162 INFO L175 Difference]: Start difference. First operand has 174 places, 163 transitions, 424 flow. Second operand 7 states and 995 transitions. [2022-11-16 11:25:14,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 165 transitions, 468 flow [2022-11-16 11:25:14,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 165 transitions, 456 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:25:14,169 INFO L231 Difference]: Finished difference. Result has 176 places, 162 transitions, 420 flow [2022-11-16 11:25:14,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=420, PETRI_PLACES=176, PETRI_TRANSITIONS=162} [2022-11-16 11:25:14,171 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 17 predicate places. [2022-11-16 11:25:14,172 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 162 transitions, 420 flow [2022-11-16 11:25:14,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.66666666666666) internal successors, (850), 6 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:14,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:14,173 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:14,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:14,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:14,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:25:14,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1157822290, now seen corresponding path program 1 times [2022-11-16 11:25:14,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:14,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132606403] [2022-11-16 11:25:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:14,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:14,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:14,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132606403] [2022-11-16 11:25:14,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132606403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:14,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:14,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:25:14,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251878991] [2022-11-16 11:25:14,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:14,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:25:14,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:14,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:25:14,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:25:14,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 173 [2022-11-16 11:25:14,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 162 transitions, 420 flow. Second operand has 6 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:14,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:14,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 173 [2022-11-16 11:25:14,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:15,092 INFO L130 PetriNetUnfolder]: 342/1924 cut-off events. [2022-11-16 11:25:15,093 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2022-11-16 11:25:15,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2843 conditions, 1924 events. 342/1924 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 16101 event pairs, 71 based on Foata normal form. 0/1702 useless extension candidates. Maximal degree in co-relation 2080. Up to 237 conditions per place. [2022-11-16 11:25:15,111 INFO L137 encePairwiseOnDemand]: 162/173 looper letters, 60 selfloop transitions, 19 changer transitions 0/212 dead transitions. [2022-11-16 11:25:15,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 212 transitions, 728 flow [2022-11-16 11:25:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:25:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:25:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1260 transitions. [2022-11-16 11:25:15,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8092485549132948 [2022-11-16 11:25:15,115 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1260 transitions. [2022-11-16 11:25:15,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1260 transitions. [2022-11-16 11:25:15,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:15,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1260 transitions. [2022-11-16 11:25:15,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.0) internal successors, (1260), 9 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:15,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:15,123 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:15,123 INFO L175 Difference]: Start difference. First operand has 176 places, 162 transitions, 420 flow. Second operand 9 states and 1260 transitions. [2022-11-16 11:25:15,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 212 transitions, 728 flow [2022-11-16 11:25:15,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 212 transitions, 717 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:25:15,131 INFO L231 Difference]: Finished difference. Result has 185 places, 174 transitions, 535 flow [2022-11-16 11:25:15,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=535, PETRI_PLACES=185, PETRI_TRANSITIONS=174} [2022-11-16 11:25:15,133 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 26 predicate places. [2022-11-16 11:25:15,135 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 174 transitions, 535 flow [2022-11-16 11:25:15,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:15,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:15,136 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] [2022-11-16 11:25:15,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:25:15,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:25:15,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:15,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1532752072, now seen corresponding path program 1 times [2022-11-16 11:25:15,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:15,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780948281] [2022-11-16 11:25:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:15,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:15,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:15,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780948281] [2022-11-16 11:25:15,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780948281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:15,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:15,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:25:15,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208106822] [2022-11-16 11:25:15,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:15,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:25:15,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:15,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:25:15,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:25:15,277 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 173 [2022-11-16 11:25:15,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 174 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:15,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:15,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 173 [2022-11-16 11:25:15,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:15,810 INFO L130 PetriNetUnfolder]: 318/1694 cut-off events. [2022-11-16 11:25:15,811 INFO L131 PetriNetUnfolder]: For 959/990 co-relation queries the response was YES. [2022-11-16 11:25:15,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 1694 events. 318/1694 cut-off events. For 959/990 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 13654 event pairs, 77 based on Foata normal form. 42/1578 useless extension candidates. Maximal degree in co-relation 2216. Up to 272 conditions per place. [2022-11-16 11:25:15,828 INFO L137 encePairwiseOnDemand]: 162/173 looper letters, 65 selfloop transitions, 19 changer transitions 0/217 dead transitions. [2022-11-16 11:25:15,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 217 transitions, 870 flow [2022-11-16 11:25:15,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:25:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:25:15,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1262 transitions. [2022-11-16 11:25:15,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8105330764290302 [2022-11-16 11:25:15,832 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1262 transitions. [2022-11-16 11:25:15,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1262 transitions. [2022-11-16 11:25:15,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:15,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1262 transitions. [2022-11-16 11:25:15,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.22222222222223) internal successors, (1262), 9 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:15,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:15,842 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:15,842 INFO L175 Difference]: Start difference. First operand has 185 places, 174 transitions, 535 flow. Second operand 9 states and 1262 transitions. [2022-11-16 11:25:15,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 217 transitions, 870 flow [2022-11-16 11:25:15,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 217 transitions, 829 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-16 11:25:15,853 INFO L231 Difference]: Finished difference. Result has 191 places, 178 transitions, 582 flow [2022-11-16 11:25:15,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=582, PETRI_PLACES=191, PETRI_TRANSITIONS=178} [2022-11-16 11:25:15,855 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 32 predicate places. [2022-11-16 11:25:15,856 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 178 transitions, 582 flow [2022-11-16 11:25:15,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:15,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:15,856 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:15,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:25:15,857 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:25:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:15,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1132306102, now seen corresponding path program 1 times [2022-11-16 11:25:15,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:15,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197302753] [2022-11-16 11:25:15,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:15,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:15,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:25:15,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:15,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197302753] [2022-11-16 11:25:15,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197302753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:15,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:15,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:15,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669068994] [2022-11-16 11:25:15,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:15,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:15,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:15,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:15,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:15,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 173 [2022-11-16 11:25:15,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 178 transitions, 582 flow. Second operand has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:15,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:15,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 173 [2022-11-16 11:25:15,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:16,362 INFO L130 PetriNetUnfolder]: 272/1879 cut-off events. [2022-11-16 11:25:16,362 INFO L131 PetriNetUnfolder]: For 1180/1225 co-relation queries the response was YES. [2022-11-16 11:25:16,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 1879 events. 272/1879 cut-off events. For 1180/1225 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 15919 event pairs, 131 based on Foata normal form. 23/1745 useless extension candidates. Maximal degree in co-relation 2942. Up to 362 conditions per place. [2022-11-16 11:25:16,406 INFO L137 encePairwiseOnDemand]: 166/173 looper letters, 55 selfloop transitions, 7 changer transitions 0/204 dead transitions. [2022-11-16 11:25:16,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 204 transitions, 844 flow [2022-11-16 11:25:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:16,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 724 transitions. [2022-11-16 11:25:16,409 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8369942196531792 [2022-11-16 11:25:16,409 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 724 transitions. [2022-11-16 11:25:16,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 724 transitions. [2022-11-16 11:25:16,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:16,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 724 transitions. [2022-11-16 11:25:16,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.8) internal successors, (724), 5 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:16,414 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) [2022-11-16 11:25:16,415 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) [2022-11-16 11:25:16,415 INFO L175 Difference]: Start difference. First operand has 191 places, 178 transitions, 582 flow. Second operand 5 states and 724 transitions. [2022-11-16 11:25:16,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 204 transitions, 844 flow [2022-11-16 11:25:16,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 204 transitions, 816 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 11:25:16,430 INFO L231 Difference]: Finished difference. Result has 194 places, 181 transitions, 612 flow [2022-11-16 11:25:16,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=612, PETRI_PLACES=194, PETRI_TRANSITIONS=181} [2022-11-16 11:25:16,431 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 35 predicate places. [2022-11-16 11:25:16,432 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 181 transitions, 612 flow [2022-11-16 11:25:16,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:16,432 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:16,432 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-16 11:25:16,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:25:16,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:25:16,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:16,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1364159216, now seen corresponding path program 1 times [2022-11-16 11:25:16,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:16,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477358073] [2022-11-16 11:25:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:16,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:25:16,461 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:25:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:25:16,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:25:16,486 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:25:16,486 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-16 11:25:16,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-16 11:25:16,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-16 11:25:16,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-16 11:25:16,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-16 11:25:16,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-16 11:25:16,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-16 11:25:16,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-16 11:25:16,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-16 11:25:16,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-16 11:25:16,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-16 11:25:16,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-16 11:25:16,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-16 11:25:16,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-16 11:25:16,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-16 11:25:16,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-16 11:25:16,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-16 11:25:16,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:25:16,489 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:16,490 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:25:16,490 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 11:25:16,531 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:25:16,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 216 transitions, 462 flow [2022-11-16 11:25:16,597 INFO L130 PetriNetUnfolder]: 50/451 cut-off events. [2022-11-16 11:25:16,597 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-16 11:25:16,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 451 events. 50/451 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1615 event pairs, 1 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2022-11-16 11:25:16,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 216 transitions, 462 flow [2022-11-16 11:25:16,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 216 transitions, 462 flow [2022-11-16 11:25:16,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:25:16,608 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;@4d8a87c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:25:16,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-16 11:25:16,612 INFO L130 PetriNetUnfolder]: 1/53 cut-off events. [2022-11-16 11:25:16,613 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:25:16,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:16,613 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] [2022-11-16 11:25:16,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:25:16,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1947469259, now seen corresponding path program 1 times [2022-11-16 11:25:16,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:16,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268571952] [2022-11-16 11:25:16,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:16,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:16,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:16,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268571952] [2022-11-16 11:25:16,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268571952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:16,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:16,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:16,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447909764] [2022-11-16 11:25:16,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:16,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:16,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:16,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:16,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:16,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 216 [2022-11-16 11:25:16,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 216 transitions, 462 flow. Second operand has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:16,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:16,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 216 [2022-11-16 11:25:16,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:16,790 INFO L130 PetriNetUnfolder]: 7/382 cut-off events. [2022-11-16 11:25:16,790 INFO L131 PetriNetUnfolder]: For 54/127 co-relation queries the response was YES. [2022-11-16 11:25:16,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 382 events. 7/382 cut-off events. For 54/127 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1243 event pairs, 1 based on Foata normal form. 270/608 useless extension candidates. Maximal degree in co-relation 285. Up to 40 conditions per place. [2022-11-16 11:25:16,794 INFO L137 encePairwiseOnDemand]: 186/216 looper letters, 21 selfloop transitions, 4 changer transitions 0/199 dead transitions. [2022-11-16 11:25:16,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 199 transitions, 478 flow [2022-11-16 11:25:16,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:16,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 940 transitions. [2022-11-16 11:25:16,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8703703703703703 [2022-11-16 11:25:16,798 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 940 transitions. [2022-11-16 11:25:16,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 940 transitions. [2022-11-16 11:25:16,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:16,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 940 transitions. [2022-11-16 11:25:16,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:16,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:16,803 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:16,803 INFO L175 Difference]: Start difference. First operand has 197 places, 216 transitions, 462 flow. Second operand 5 states and 940 transitions. [2022-11-16 11:25:16,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 199 transitions, 478 flow [2022-11-16 11:25:16,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 199 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:25:16,808 INFO L231 Difference]: Finished difference. Result has 203 places, 195 transitions, 446 flow [2022-11-16 11:25:16,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=203, PETRI_TRANSITIONS=195} [2022-11-16 11:25:16,810 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 6 predicate places. [2022-11-16 11:25:16,810 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 195 transitions, 446 flow [2022-11-16 11:25:16,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:16,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:16,811 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] [2022-11-16 11:25:16,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:25:16,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:25:16,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:16,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1019464961, now seen corresponding path program 1 times [2022-11-16 11:25:16,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:16,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346709115] [2022-11-16 11:25:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:16,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:16,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:16,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346709115] [2022-11-16 11:25:16,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346709115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:16,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:16,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:16,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853311959] [2022-11-16 11:25:16,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:16,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:16,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:16,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:16,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:16,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 216 [2022-11-16 11:25:16,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 195 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:16,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:16,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 216 [2022-11-16 11:25:16,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:18,814 INFO L130 PetriNetUnfolder]: 1862/8989 cut-off events. [2022-11-16 11:25:18,814 INFO L131 PetriNetUnfolder]: For 1120/1120 co-relation queries the response was YES. [2022-11-16 11:25:18,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12460 conditions, 8989 events. 1862/8989 cut-off events. For 1120/1120 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 101754 event pairs, 1173 based on Foata normal form. 0/7854 useless extension candidates. Maximal degree in co-relation 12399. Up to 1994 conditions per place. [2022-11-16 11:25:18,967 INFO L137 encePairwiseOnDemand]: 208/216 looper letters, 52 selfloop transitions, 8 changer transitions 0/230 dead transitions. [2022-11-16 11:25:18,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 230 transitions, 678 flow [2022-11-16 11:25:18,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:18,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:18,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 899 transitions. [2022-11-16 11:25:18,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8324074074074074 [2022-11-16 11:25:18,971 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 899 transitions. [2022-11-16 11:25:18,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 899 transitions. [2022-11-16 11:25:18,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:18,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 899 transitions. [2022-11-16 11:25:18,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.8) internal successors, (899), 5 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) [2022-11-16 11:25:18,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:18,976 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:18,976 INFO L175 Difference]: Start difference. First operand has 203 places, 195 transitions, 446 flow. Second operand 5 states and 899 transitions. [2022-11-16 11:25:18,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 230 transitions, 678 flow [2022-11-16 11:25:18,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 230 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:25:18,983 INFO L231 Difference]: Finished difference. Result has 209 places, 202 transitions, 508 flow [2022-11-16 11:25:18,983 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=508, PETRI_PLACES=209, PETRI_TRANSITIONS=202} [2022-11-16 11:25:18,984 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 12 predicate places. [2022-11-16 11:25:18,984 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 202 transitions, 508 flow [2022-11-16 11:25:18,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:18,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:18,985 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:18,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:25:18,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:25:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:18,986 INFO L85 PathProgramCache]: Analyzing trace with hash 445855539, now seen corresponding path program 1 times [2022-11-16 11:25:18,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:18,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026113185] [2022-11-16 11:25:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:18,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:25:19,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:19,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026113185] [2022-11-16 11:25:19,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026113185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:19,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:19,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:19,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887203066] [2022-11-16 11:25:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:19,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:19,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:19,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:19,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:19,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 216 [2022-11-16 11:25:19,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 202 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 177.75) internal successors, (711), 4 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:19,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:19,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 216 [2022-11-16 11:25:19,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:19,263 INFO L130 PetriNetUnfolder]: 37/905 cut-off events. [2022-11-16 11:25:19,264 INFO L131 PetriNetUnfolder]: For 210/508 co-relation queries the response was YES. [2022-11-16 11:25:19,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1138 conditions, 905 events. 37/905 cut-off events. For 210/508 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5403 event pairs, 7 based on Foata normal form. 41/839 useless extension candidates. Maximal degree in co-relation 814. Up to 52 conditions per place. [2022-11-16 11:25:19,277 INFO L137 encePairwiseOnDemand]: 210/216 looper letters, 13 selfloop transitions, 8 changer transitions 0/202 dead transitions. [2022-11-16 11:25:19,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 202 transitions, 548 flow [2022-11-16 11:25:19,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 889 transitions. [2022-11-16 11:25:19,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8231481481481482 [2022-11-16 11:25:19,280 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 889 transitions. [2022-11-16 11:25:19,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 889 transitions. [2022-11-16 11:25:19,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:19,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 889 transitions. [2022-11-16 11:25:19,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:19,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:19,286 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:19,287 INFO L175 Difference]: Start difference. First operand has 209 places, 202 transitions, 508 flow. Second operand 5 states and 889 transitions. [2022-11-16 11:25:19,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 202 transitions, 548 flow [2022-11-16 11:25:19,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 202 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:25:19,292 INFO L231 Difference]: Finished difference. Result has 212 places, 202 transitions, 524 flow [2022-11-16 11:25:19,292 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=524, PETRI_PLACES=212, PETRI_TRANSITIONS=202} [2022-11-16 11:25:19,293 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 15 predicate places. [2022-11-16 11:25:19,293 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 202 transitions, 524 flow [2022-11-16 11:25:19,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.75) internal successors, (711), 4 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:19,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:19,320 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:25:19,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:25:19,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:25:19,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:19,321 INFO L85 PathProgramCache]: Analyzing trace with hash 936620548, now seen corresponding path program 1 times [2022-11-16 11:25:19,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:19,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344374705] [2022-11-16 11:25:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:19,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:19,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:19,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344374705] [2022-11-16 11:25:19,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344374705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:19,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238867400] [2022-11-16 11:25:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:19,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:19,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:19,418 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:19,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:25:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:19,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:25:19,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:19,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:25:19,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238867400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:19,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:25:19,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:25:19,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913382827] [2022-11-16 11:25:19,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:19,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:25:19,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:19,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:25:19,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:25:19,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 216 [2022-11-16 11:25:19,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 202 transitions, 524 flow. Second operand has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:19,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:19,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 216 [2022-11-16 11:25:19,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:19,935 INFO L130 PetriNetUnfolder]: 37/903 cut-off events. [2022-11-16 11:25:19,936 INFO L131 PetriNetUnfolder]: For 220/490 co-relation queries the response was YES. [2022-11-16 11:25:19,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 903 events. 37/903 cut-off events. For 220/490 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5438 event pairs, 7 based on Foata normal form. 18/814 useless extension candidates. Maximal degree in co-relation 814. Up to 58 conditions per place. [2022-11-16 11:25:19,950 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 17 selfloop transitions, 6 changer transitions 0/204 dead transitions. [2022-11-16 11:25:19,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 204 transitions, 572 flow [2022-11-16 11:25:19,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:25:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:25:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1242 transitions. [2022-11-16 11:25:19,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8214285714285714 [2022-11-16 11:25:19,955 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1242 transitions. [2022-11-16 11:25:19,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1242 transitions. [2022-11-16 11:25:19,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:19,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1242 transitions. [2022-11-16 11:25:19,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 177.42857142857142) internal successors, (1242), 7 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:19,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:19,964 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 216.0) internal successors, (1728), 8 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:19,964 INFO L175 Difference]: Start difference. First operand has 212 places, 202 transitions, 524 flow. Second operand 7 states and 1242 transitions. [2022-11-16 11:25:19,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 204 transitions, 572 flow [2022-11-16 11:25:19,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 204 transitions, 560 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:25:19,971 INFO L231 Difference]: Finished difference. Result has 214 places, 201 transitions, 520 flow [2022-11-16 11:25:19,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=520, PETRI_PLACES=214, PETRI_TRANSITIONS=201} [2022-11-16 11:25:19,972 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 17 predicate places. [2022-11-16 11:25:19,972 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 201 transitions, 520 flow [2022-11-16 11:25:19,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:19,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:19,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:19,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:20,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:25:20,179 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:25:20,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:20,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1910770135, now seen corresponding path program 1 times [2022-11-16 11:25:20,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:20,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254129193] [2022-11-16 11:25:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:20,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:20,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:20,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254129193] [2022-11-16 11:25:20,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254129193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:20,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:20,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:25:20,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061855488] [2022-11-16 11:25:20,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:20,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:25:20,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:20,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:25:20,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:25:20,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 216 [2022-11-16 11:25:20,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 201 transitions, 520 flow. Second operand has 6 states, 6 states have (on average 163.5) internal successors, (981), 6 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:20,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:20,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 216 [2022-11-16 11:25:20,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:23,445 INFO L130 PetriNetUnfolder]: 4005/15360 cut-off events. [2022-11-16 11:25:23,446 INFO L131 PetriNetUnfolder]: For 4086/4086 co-relation queries the response was YES. [2022-11-16 11:25:23,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24287 conditions, 15360 events. 4005/15360 cut-off events. For 4086/4086 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 186619 event pairs, 971 based on Foata normal form. 0/13707 useless extension candidates. Maximal degree in co-relation 20965. Up to 2727 conditions per place. [2022-11-16 11:25:23,670 INFO L137 encePairwiseOnDemand]: 203/216 looper letters, 100 selfloop transitions, 27 changer transitions 0/291 dead transitions. [2022-11-16 11:25:23,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 291 transitions, 1100 flow [2022-11-16 11:25:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:25:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:25:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1587 transitions. [2022-11-16 11:25:23,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.816358024691358 [2022-11-16 11:25:23,676 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1587 transitions. [2022-11-16 11:25:23,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1587 transitions. [2022-11-16 11:25:23,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:23,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1587 transitions. [2022-11-16 11:25:23,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 176.33333333333334) internal successors, (1587), 9 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:23,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:23,705 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:23,705 INFO L175 Difference]: Start difference. First operand has 214 places, 201 transitions, 520 flow. Second operand 9 states and 1587 transitions. [2022-11-16 11:25:23,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 291 transitions, 1100 flow [2022-11-16 11:25:23,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 291 transitions, 1089 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:25:23,719 INFO L231 Difference]: Finished difference. Result has 223 places, 220 transitions, 713 flow [2022-11-16 11:25:23,720 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=713, PETRI_PLACES=223, PETRI_TRANSITIONS=220} [2022-11-16 11:25:23,721 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 26 predicate places. [2022-11-16 11:25:23,721 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 220 transitions, 713 flow [2022-11-16 11:25:23,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.5) internal successors, (981), 6 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:23,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:23,722 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] [2022-11-16 11:25:23,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:25:23,722 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:25:23,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:23,723 INFO L85 PathProgramCache]: Analyzing trace with hash -895667111, now seen corresponding path program 1 times [2022-11-16 11:25:23,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:23,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616593840] [2022-11-16 11:25:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:23,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:23,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:23,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616593840] [2022-11-16 11:25:23,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616593840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:23,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:23,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:25:23,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539313102] [2022-11-16 11:25:23,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:23,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:25:23,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:23,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:25:23,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:25:23,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 216 [2022-11-16 11:25:23,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 220 transitions, 713 flow. Second operand has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:23,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:23,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 216 [2022-11-16 11:25:23,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:26,976 INFO L130 PetriNetUnfolder]: 3804/14941 cut-off events. [2022-11-16 11:25:26,977 INFO L131 PetriNetUnfolder]: For 13091/13251 co-relation queries the response was YES. [2022-11-16 11:25:27,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28666 conditions, 14941 events. 3804/14941 cut-off events. For 13091/13251 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 180292 event pairs, 1231 based on Foata normal form. 228/13569 useless extension candidates. Maximal degree in co-relation 19160. Up to 2976 conditions per place. [2022-11-16 11:25:27,195 INFO L137 encePairwiseOnDemand]: 203/216 looper letters, 107 selfloop transitions, 27 changer transitions 0/298 dead transitions. [2022-11-16 11:25:27,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 298 transitions, 1358 flow [2022-11-16 11:25:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:25:27,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:25:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1585 transitions. [2022-11-16 11:25:27,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8153292181069959 [2022-11-16 11:25:27,202 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1585 transitions. [2022-11-16 11:25:27,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1585 transitions. [2022-11-16 11:25:27,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:27,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1585 transitions. [2022-11-16 11:25:27,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 176.11111111111111) internal successors, (1585), 9 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:27,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:27,214 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:27,214 INFO L175 Difference]: Start difference. First operand has 223 places, 220 transitions, 713 flow. Second operand 9 states and 1585 transitions. [2022-11-16 11:25:27,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 298 transitions, 1358 flow [2022-11-16 11:25:27,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 298 transitions, 1291 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-16 11:25:27,267 INFO L231 Difference]: Finished difference. Result has 229 places, 228 transitions, 794 flow [2022-11-16 11:25:27,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=794, PETRI_PLACES=229, PETRI_TRANSITIONS=228} [2022-11-16 11:25:27,268 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 32 predicate places. [2022-11-16 11:25:27,269 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 228 transitions, 794 flow [2022-11-16 11:25:27,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:27,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:27,270 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:27,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:25:27,270 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:25:27,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:27,271 INFO L85 PathProgramCache]: Analyzing trace with hash 793502087, now seen corresponding path program 1 times [2022-11-16 11:25:27,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:27,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242847511] [2022-11-16 11:25:27,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:27,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:25:27,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:27,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242847511] [2022-11-16 11:25:27,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242847511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:27,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:27,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:27,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031464799] [2022-11-16 11:25:27,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:27,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:27,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:27,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:27,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 216 [2022-11-16 11:25:27,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 228 transitions, 794 flow. Second operand has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:27,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:27,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 216 [2022-11-16 11:25:27,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:30,746 INFO L130 PetriNetUnfolder]: 4393/19472 cut-off events. [2022-11-16 11:25:30,746 INFO L131 PetriNetUnfolder]: For 17033/17409 co-relation queries the response was YES. [2022-11-16 11:25:30,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37218 conditions, 19472 events. 4393/19472 cut-off events. For 17033/17409 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 252917 event pairs, 2297 based on Foata normal form. 208/17676 useless extension candidates. Maximal degree in co-relation 26408. Up to 4764 conditions per place. [2022-11-16 11:25:30,990 INFO L137 encePairwiseOnDemand]: 208/216 looper letters, 93 selfloop transitions, 11 changer transitions 0/277 dead transitions. [2022-11-16 11:25:30,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 277 transitions, 1310 flow [2022-11-16 11:25:30,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:30,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:30,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 897 transitions. [2022-11-16 11:25:30,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8305555555555556 [2022-11-16 11:25:30,994 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 897 transitions. [2022-11-16 11:25:30,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 897 transitions. [2022-11-16 11:25:30,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:30,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 897 transitions. [2022-11-16 11:25:30,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.4) internal successors, (897), 5 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:31,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:31,001 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:31,002 INFO L175 Difference]: Start difference. First operand has 229 places, 228 transitions, 794 flow. Second operand 5 states and 897 transitions. [2022-11-16 11:25:31,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 277 transitions, 1310 flow [2022-11-16 11:25:31,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 277 transitions, 1268 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 11:25:31,089 INFO L231 Difference]: Finished difference. Result has 232 places, 233 transitions, 844 flow [2022-11-16 11:25:31,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=844, PETRI_PLACES=232, PETRI_TRANSITIONS=233} [2022-11-16 11:25:31,090 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 35 predicate places. [2022-11-16 11:25:31,090 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 233 transitions, 844 flow [2022-11-16 11:25:31,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:31,091 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:31,091 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:31,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:25:31,091 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:25:31,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:31,092 INFO L85 PathProgramCache]: Analyzing trace with hash 759256255, now seen corresponding path program 1 times [2022-11-16 11:25:31,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:31,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881822651] [2022-11-16 11:25:31,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:31,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:25:31,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:31,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881822651] [2022-11-16 11:25:31,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881822651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:31,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:31,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:25:31,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166803629] [2022-11-16 11:25:31,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:31,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:25:31,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:31,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:25:31,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:25:31,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 216 [2022-11-16 11:25:31,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 233 transitions, 844 flow. Second operand has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:31,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:31,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 216 [2022-11-16 11:25:31,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:38,107 INFO L130 PetriNetUnfolder]: 9306/36293 cut-off events. [2022-11-16 11:25:38,107 INFO L131 PetriNetUnfolder]: For 32379/33547 co-relation queries the response was YES. [2022-11-16 11:25:38,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72232 conditions, 36293 events. 9306/36293 cut-off events. For 32379/33547 co-relation queries the response was YES. Maximal size of possible extension queue 1637. Compared 512799 event pairs, 2292 based on Foata normal form. 407/33511 useless extension candidates. Maximal degree in co-relation 65090. Up to 7057 conditions per place. [2022-11-16 11:25:38,547 INFO L137 encePairwiseOnDemand]: 203/216 looper letters, 149 selfloop transitions, 46 changer transitions 0/363 dead transitions. [2022-11-16 11:25:38,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 363 transitions, 1990 flow [2022-11-16 11:25:38,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:25:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:25:38,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1584 transitions. [2022-11-16 11:25:38,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2022-11-16 11:25:38,553 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1584 transitions. [2022-11-16 11:25:38,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1584 transitions. [2022-11-16 11:25:38,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:38,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1584 transitions. [2022-11-16 11:25:38,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 176.0) internal successors, (1584), 9 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:38,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:38,565 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:38,565 INFO L175 Difference]: Start difference. First operand has 232 places, 233 transitions, 844 flow. Second operand 9 states and 1584 transitions. [2022-11-16 11:25:38,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 363 transitions, 1990 flow [2022-11-16 11:25:38,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 363 transitions, 1984 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:25:38,797 INFO L231 Difference]: Finished difference. Result has 245 places, 268 transitions, 1328 flow [2022-11-16 11:25:38,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1328, PETRI_PLACES=245, PETRI_TRANSITIONS=268} [2022-11-16 11:25:38,798 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 48 predicate places. [2022-11-16 11:25:38,798 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 268 transitions, 1328 flow [2022-11-16 11:25:38,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:38,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:38,799 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:38,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:25:38,799 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:25:38,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:38,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2062108191, now seen corresponding path program 1 times [2022-11-16 11:25:38,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:38,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171077952] [2022-11-16 11:25:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:38,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:25:38,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:38,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171077952] [2022-11-16 11:25:38,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171077952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:38,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:38,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:25:38,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769499616] [2022-11-16 11:25:38,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:38,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:25:38,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:38,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:25:38,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:25:38,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 216 [2022-11-16 11:25:38,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 268 transitions, 1328 flow. Second operand has 6 states, 6 states have (on average 163.83333333333334) internal successors, (983), 6 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:38,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:38,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 216 [2022-11-16 11:25:38,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:46,064 INFO L130 PetriNetUnfolder]: 8844/35718 cut-off events. [2022-11-16 11:25:46,065 INFO L131 PetriNetUnfolder]: For 67064/68833 co-relation queries the response was YES. [2022-11-16 11:25:46,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80566 conditions, 35718 events. 8844/35718 cut-off events. For 67064/68833 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 507050 event pairs, 3327 based on Foata normal form. 863/33711 useless extension candidates. Maximal degree in co-relation 55827. Up to 7474 conditions per place. [2022-11-16 11:25:46,474 INFO L137 encePairwiseOnDemand]: 203/216 looper letters, 163 selfloop transitions, 41 changer transitions 0/372 dead transitions. [2022-11-16 11:25:46,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 372 transitions, 2448 flow [2022-11-16 11:25:46,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:25:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:25:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1580 transitions. [2022-11-16 11:25:46,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8127572016460906 [2022-11-16 11:25:46,485 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1580 transitions. [2022-11-16 11:25:46,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1580 transitions. [2022-11-16 11:25:46,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:46,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1580 transitions. [2022-11-16 11:25:46,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 175.55555555555554) internal successors, (1580), 9 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:46,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:46,508 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 216.0) internal successors, (2160), 10 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:46,508 INFO L175 Difference]: Start difference. First operand has 245 places, 268 transitions, 1328 flow. Second operand 9 states and 1580 transitions. [2022-11-16 11:25:46,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 372 transitions, 2448 flow [2022-11-16 11:25:46,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 372 transitions, 2389 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-16 11:25:46,877 INFO L231 Difference]: Finished difference. Result has 251 places, 280 transitions, 1539 flow [2022-11-16 11:25:46,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1539, PETRI_PLACES=251, PETRI_TRANSITIONS=280} [2022-11-16 11:25:46,878 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 54 predicate places. [2022-11-16 11:25:46,878 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 280 transitions, 1539 flow [2022-11-16 11:25:46,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.83333333333334) internal successors, (983), 6 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:46,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:46,879 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-16 11:25:46,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:25:46,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:25:46,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:46,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1501214471, now seen corresponding path program 1 times [2022-11-16 11:25:46,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:46,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581941718] [2022-11-16 11:25:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:46,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 11:25:46,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:46,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581941718] [2022-11-16 11:25:46,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581941718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:46,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:46,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:46,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431077696] [2022-11-16 11:25:46,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:46,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:46,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:46,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:46,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:46,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 216 [2022-11-16 11:25:46,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 280 transitions, 1539 flow. Second operand has 4 states, 4 states have (on average 168.5) internal successors, (674), 4 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:46,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:46,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 216 [2022-11-16 11:25:46,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:54,478 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([833] t_funEXIT-->L716-5: Formula: (= v_t_funThread2of3ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem13#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0)))) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_13|} AuxVars[] AssignedVars[][314], [t_funThread1of3ForFork0InUse, 220#true, Black: 442#(<= ~global~0 1), t_funThread2of3ForFork0NotInUse, 418#(<= 1 |t_funThread1of3ForFork0_#t~post7#1|), Black: 449#(and (<= |t_funThread2of3ForFork0_#t~post7#1| 1) (<= ~global~0 1)), Black: 447#(and (= |t_funThread2of3ForFork0_#t~post5#1| 0) (<= ~global~0 1)), t_funThread3of3ForFork0NotInUse, 233#(<= 1 |ULTIMATE.start_main_~i~0#1|), Black: 443#(<= |t_funThread2of3ForFork0_#t~post7#1| 1), Black: 441#(= |t_funThread2of3ForFork0_#t~post5#1| 0), Black: 205#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 202#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 461#(<= 1 ~global~0), Black: 397#(= |t_funThread1of3ForFork0_#t~post5#1| 0), Black: 468#(and (<= 1 |t_funThread2of3ForFork0_#t~post7#1|) (<= 1 ~global~0)), 472#true, Black: 398#(<= ~global~0 1), Black: 213#(= |t_funThread1of3ForFork0_#t~post5#1| 0), Black: 399#(<= |t_funThread1of3ForFork0_#t~post7#1| 1), 98#L707-16true, Black: 215#(and (= |t_funThread1of3ForFork0_#t~post5#1| 0) (= ~global~0 0)), Black: 403#(and (= |t_funThread1of3ForFork0_#t~post5#1| 0) (<= ~global~0 1)), Black: 212#(= ~global~0 0), 142#L716-5true, 405#(and (<= |t_funThread1of3ForFork0_#t~post7#1| 1) (<= ~global~0 1)), 457#true, Black: 424#(and (<= 1 |t_funThread1of3ForFork0_#t~post7#1|) (<= 1 ~global~0)), 438#true, Black: 417#(<= 1 ~global~0), Black: 433#(and (= |t_funThread2of3ForFork0_#t~post5#1| 0) (= ~global~0 0)), Black: 431#(= |t_funThread2of3ForFork0_#t~post5#1| 0), Black: 430#(= ~global~0 0)]) [2022-11-16 11:25:54,478 INFO L383 tUnfolder$Statistics]: this new event has 181 ancestors and is cut-off event [2022-11-16 11:25:54,478 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-16 11:25:54,478 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-16 11:25:54,478 INFO L386 tUnfolder$Statistics]: existing Event has 181 ancestors and is cut-off event [2022-11-16 11:25:54,550 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([833] t_funEXIT-->L716-5: Formula: (= v_t_funThread2of3ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem13#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0)))) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_13|} AuxVars[] AssignedVars[][314], [t_funThread1of3ForFork0InUse, 220#true, t_funThread2of3ForFork0NotInUse, Black: 442#(<= ~global~0 1), Black: 449#(and (<= |t_funThread2of3ForFork0_#t~post7#1| 1) (<= ~global~0 1)), t_funThread3of3ForFork0NotInUse, Black: 447#(and (= |t_funThread2of3ForFork0_#t~post5#1| 0) (<= ~global~0 1)), 233#(<= 1 |ULTIMATE.start_main_~i~0#1|), Black: 443#(<= |t_funThread2of3ForFork0_#t~post7#1| 1), Black: 441#(= |t_funThread2of3ForFork0_#t~post5#1| 0), Black: 205#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), Black: 202#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 461#(<= 1 ~global~0), Black: 397#(= |t_funThread1of3ForFork0_#t~post5#1| 0), Black: 468#(and (<= 1 |t_funThread2of3ForFork0_#t~post7#1|) (<= 1 ~global~0)), 472#true, Black: 398#(<= ~global~0 1), Black: 399#(<= |t_funThread1of3ForFork0_#t~post7#1| 1), Black: 213#(= |t_funThread1of3ForFork0_#t~post5#1| 0), 98#L707-16true, Black: 215#(and (= |t_funThread1of3ForFork0_#t~post5#1| 0) (= ~global~0 0)), Black: 403#(and (= |t_funThread1of3ForFork0_#t~post5#1| 0) (<= ~global~0 1)), Black: 212#(= ~global~0 0), Black: 405#(and (<= |t_funThread1of3ForFork0_#t~post7#1| 1) (<= ~global~0 1)), 142#L716-5true, 457#true, 394#true, Black: 424#(and (<= 1 |t_funThread1of3ForFork0_#t~post7#1|) (<= 1 ~global~0)), 438#true, Black: 417#(<= 1 ~global~0), Black: 433#(and (= |t_funThread2of3ForFork0_#t~post5#1| 0) (= ~global~0 0)), Black: 431#(= |t_funThread2of3ForFork0_#t~post5#1| 0), Black: 430#(= ~global~0 0), 413#true]) [2022-11-16 11:25:54,551 INFO L383 tUnfolder$Statistics]: this new event has 181 ancestors and is cut-off event [2022-11-16 11:25:54,551 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-16 11:25:54,551 INFO L386 tUnfolder$Statistics]: existing Event has 181 ancestors and is cut-off event [2022-11-16 11:25:54,551 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-16 11:25:54,616 INFO L130 PetriNetUnfolder]: 9198/36402 cut-off events. [2022-11-16 11:25:54,617 INFO L131 PetriNetUnfolder]: For 93031/95907 co-relation queries the response was YES. [2022-11-16 11:25:54,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89394 conditions, 36402 events. 9198/36402 cut-off events. For 93031/95907 co-relation queries the response was YES. Maximal size of possible extension queue 1854. Compared 518580 event pairs, 3071 based on Foata normal form. 1450/34568 useless extension candidates. Maximal degree in co-relation 84212. Up to 10480 conditions per place. [2022-11-16 11:25:55,077 INFO L137 encePairwiseOnDemand]: 208/216 looper letters, 174 selfloop transitions, 15 changer transitions 0/366 dead transitions. [2022-11-16 11:25:55,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 366 transitions, 2790 flow [2022-11-16 11:25:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 895 transitions. [2022-11-16 11:25:55,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8287037037037037 [2022-11-16 11:25:55,080 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 895 transitions. [2022-11-16 11:25:55,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 895 transitions. [2022-11-16 11:25:55,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:55,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 895 transitions. [2022-11-16 11:25:55,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:55,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:55,086 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:55,086 INFO L175 Difference]: Start difference. First operand has 251 places, 280 transitions, 1539 flow. Second operand 5 states and 895 transitions. [2022-11-16 11:25:55,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 366 transitions, 2790 flow [2022-11-16 11:25:55,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 366 transitions, 2703 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-16 11:25:55,487 INFO L231 Difference]: Finished difference. Result has 254 places, 286 transitions, 1605 flow [2022-11-16 11:25:55,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1605, PETRI_PLACES=254, PETRI_TRANSITIONS=286} [2022-11-16 11:25:55,488 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 57 predicate places. [2022-11-16 11:25:55,488 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 286 transitions, 1605 flow [2022-11-16 11:25:55,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.5) internal successors, (674), 4 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:55,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:55,489 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2022-11-16 11:25:55,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:25:55,490 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 11:25:55,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:55,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1398918612, now seen corresponding path program 1 times [2022-11-16 11:25:55,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:55,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532114945] [2022-11-16 11:25:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:55,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:25:55,512 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:25:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:25:55,549 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:25:55,551 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:25:55,551 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-16 11:25:55,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-16 11:25:55,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-16 11:25:55,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-16 11:25:55,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-16 11:25:55,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-16 11:25:55,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-16 11:25:55,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-16 11:25:55,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-16 11:25:55,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-16 11:25:55,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-16 11:25:55,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-16 11:25:55,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-16 11:25:55,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-16 11:25:55,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-16 11:25:55,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-16 11:25:55,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-16 11:25:55,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-16 11:25:55,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-16 11:25:55,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-16 11:25:55,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-16 11:25:55,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:25:55,557 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:55,558 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:25:55,558 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-16 11:25:55,602 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:25:55,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 259 transitions, 562 flow [2022-11-16 11:25:55,729 INFO L130 PetriNetUnfolder]: 81/696 cut-off events. [2022-11-16 11:25:55,729 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-16 11:25:55,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 696 events. 81/696 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2831 event pairs, 6 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 471. Up to 32 conditions per place. [2022-11-16 11:25:55,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 259 transitions, 562 flow [2022-11-16 11:25:55,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 259 transitions, 562 flow [2022-11-16 11:25:55,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:25:55,748 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;@4d8a87c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:25:55,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-16 11:25:55,752 INFO L130 PetriNetUnfolder]: 1/52 cut-off events. [2022-11-16 11:25:55,752 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:25:55,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:55,752 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] [2022-11-16 11:25:55,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:25:55,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:55,753 INFO L85 PathProgramCache]: Analyzing trace with hash -110712684, now seen corresponding path program 1 times [2022-11-16 11:25:55,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:55,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325150732] [2022-11-16 11:25:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:55,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:55,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:55,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325150732] [2022-11-16 11:25:55,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325150732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:55,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:55,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:55,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752410603] [2022-11-16 11:25:55,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:55,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:55,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:55,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:55,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:55,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 259 [2022-11-16 11:25:56,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 259 transitions, 562 flow. Second operand has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:56,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:56,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 259 [2022-11-16 11:25:56,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:25:56,264 INFO L130 PetriNetUnfolder]: 20/608 cut-off events. [2022-11-16 11:25:56,265 INFO L131 PetriNetUnfolder]: For 201/459 co-relation queries the response was YES. [2022-11-16 11:25:56,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 608 events. 20/608 cut-off events. For 201/459 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2544 event pairs, 6 based on Foata normal form. 576/1108 useless extension candidates. Maximal degree in co-relation 464. Up to 71 conditions per place. [2022-11-16 11:25:56,269 INFO L137 encePairwiseOnDemand]: 223/259 looper letters, 23 selfloop transitions, 4 changer transitions 0/236 dead transitions. [2022-11-16 11:25:56,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 236 transitions, 570 flow [2022-11-16 11:25:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:25:56,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:25:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1123 transitions. [2022-11-16 11:25:56,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8671814671814672 [2022-11-16 11:25:56,273 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1123 transitions. [2022-11-16 11:25:56,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1123 transitions. [2022-11-16 11:25:56,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:25:56,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1123 transitions. [2022-11-16 11:25:56,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 224.6) internal successors, (1123), 5 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:56,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:56,280 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:56,280 INFO L175 Difference]: Start difference. First operand has 235 places, 259 transitions, 562 flow. Second operand 5 states and 1123 transitions. [2022-11-16 11:25:56,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 236 transitions, 570 flow [2022-11-16 11:25:56,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 236 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:25:56,286 INFO L231 Difference]: Finished difference. Result has 241 places, 232 transitions, 534 flow [2022-11-16 11:25:56,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=534, PETRI_PLACES=241, PETRI_TRANSITIONS=232} [2022-11-16 11:25:56,287 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 6 predicate places. [2022-11-16 11:25:56,288 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 232 transitions, 534 flow [2022-11-16 11:25:56,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:56,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:25:56,289 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] [2022-11-16 11:25:56,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:25:56,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:25:56,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:56,290 INFO L85 PathProgramCache]: Analyzing trace with hash -291988348, now seen corresponding path program 1 times [2022-11-16 11:25:56,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:56,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667277908] [2022-11-16 11:25:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:56,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:25:56,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:56,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667277908] [2022-11-16 11:25:56,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667277908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:56,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:56,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:56,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90931114] [2022-11-16 11:25:56,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:56,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:56,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:56,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:56,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:56,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 259 [2022-11-16 11:25:56,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 232 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:25:56,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:25:56,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 259 [2022-11-16 11:25:56,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:06,342 INFO L130 PetriNetUnfolder]: 15402/57846 cut-off events. [2022-11-16 11:26:06,343 INFO L131 PetriNetUnfolder]: For 9753/9753 co-relation queries the response was YES. [2022-11-16 11:26:06,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83025 conditions, 57846 events. 15402/57846 cut-off events. For 9753/9753 co-relation queries the response was YES. Maximal size of possible extension queue 1682. Compared 827000 event pairs, 8594 based on Foata normal form. 0/51270 useless extension candidates. Maximal degree in co-relation 82963. Up to 15268 conditions per place. [2022-11-16 11:26:06,940 INFO L137 encePairwiseOnDemand]: 250/259 looper letters, 68 selfloop transitions, 10 changer transitions 0/279 dead transitions. [2022-11-16 11:26:06,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 279 transitions, 856 flow [2022-11-16 11:26:06,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:26:06,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1072 transitions. [2022-11-16 11:26:06,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8277992277992278 [2022-11-16 11:26:06,943 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1072 transitions. [2022-11-16 11:26:06,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1072 transitions. [2022-11-16 11:26:06,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:06,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1072 transitions. [2022-11-16 11:26:06,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.4) internal successors, (1072), 5 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:06,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:06,950 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:06,951 INFO L175 Difference]: Start difference. First operand has 241 places, 232 transitions, 534 flow. Second operand 5 states and 1072 transitions. [2022-11-16 11:26:06,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 279 transitions, 856 flow [2022-11-16 11:26:06,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 279 transitions, 854 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:26:06,962 INFO L231 Difference]: Finished difference. Result has 247 places, 241 transitions, 611 flow [2022-11-16 11:26:06,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=611, PETRI_PLACES=247, PETRI_TRANSITIONS=241} [2022-11-16 11:26:06,963 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 12 predicate places. [2022-11-16 11:26:06,963 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 241 transitions, 611 flow [2022-11-16 11:26:06,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:06,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:06,964 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:06,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:26:06,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:26:06,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:06,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1614451301, now seen corresponding path program 1 times [2022-11-16 11:26:06,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:06,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708106524] [2022-11-16 11:26:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:06,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:26:07,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:07,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708106524] [2022-11-16 11:26:07,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708106524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:07,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:07,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:26:07,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450203187] [2022-11-16 11:26:07,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:07,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:26:07,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:07,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:26:07,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:26:07,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 259 [2022-11-16 11:26:07,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 241 transitions, 611 flow. Second operand has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:07,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:07,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 259 [2022-11-16 11:26:07,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:07,677 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1133] t_funEXIT-->L716-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem13#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][142], [Black: 251#(= |t_funThread1of4ForFork0_#t~post5#1| 0), Black: 250#(= ~global~0 0), 248#true, t_funThread1of4ForFork0NotInUse, 88#L716-5true, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, 149#L707-6true, t_funThread4of4ForFork0NotInUse, Black: 240#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 241#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 243#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 258#true, Black: 253#(and (= |t_funThread1of4ForFork0_#t~post5#1| 0) (= ~global~0 0))]) [2022-11-16 11:26:07,677 INFO L383 tUnfolder$Statistics]: this new event has 224 ancestors and is cut-off event [2022-11-16 11:26:07,677 INFO L386 tUnfolder$Statistics]: existing Event has 172 ancestors and is cut-off event [2022-11-16 11:26:07,677 INFO L386 tUnfolder$Statistics]: existing Event has 224 ancestors and is cut-off event [2022-11-16 11:26:07,678 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-11-16 11:26:07,705 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1133] t_funEXIT-->L716-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem13#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][142], [Black: 251#(= |t_funThread1of4ForFork0_#t~post5#1| 0), Black: 250#(= ~global~0 0), 248#true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, 88#L716-5true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, Black: 240#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 241#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 243#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 258#true, Black: 253#(and (= |t_funThread1of4ForFork0_#t~post5#1| 0) (= ~global~0 0))]) [2022-11-16 11:26:07,705 INFO L383 tUnfolder$Statistics]: this new event has 251 ancestors and is cut-off event [2022-11-16 11:26:07,706 INFO L386 tUnfolder$Statistics]: existing Event has 95 ancestors and is cut-off event [2022-11-16 11:26:07,706 INFO L386 tUnfolder$Statistics]: existing Event has 147 ancestors and is cut-off event [2022-11-16 11:26:07,706 INFO L386 tUnfolder$Statistics]: existing Event has 147 ancestors and is cut-off event [2022-11-16 11:26:07,710 INFO L130 PetriNetUnfolder]: 161/2580 cut-off events. [2022-11-16 11:26:07,711 INFO L131 PetriNetUnfolder]: For 1111/2769 co-relation queries the response was YES. [2022-11-16 11:26:07,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3250 conditions, 2580 events. 161/2580 cut-off events. For 1111/2769 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 21253 event pairs, 59 based on Foata normal form. 99/2312 useless extension candidates. Maximal degree in co-relation 2505. Up to 194 conditions per place. [2022-11-16 11:26:07,748 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 15 selfloop transitions, 8 changer transitions 0/241 dead transitions. [2022-11-16 11:26:07,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 241 transitions, 655 flow [2022-11-16 11:26:07,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:26:07,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:26:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1066 transitions. [2022-11-16 11:26:07,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8231660231660232 [2022-11-16 11:26:07,752 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1066 transitions. [2022-11-16 11:26:07,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1066 transitions. [2022-11-16 11:26:07,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:07,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1066 transitions. [2022-11-16 11:26:07,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.2) internal successors, (1066), 5 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:07,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:07,758 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:07,759 INFO L175 Difference]: Start difference. First operand has 247 places, 241 transitions, 611 flow. Second operand 5 states and 1066 transitions. [2022-11-16 11:26:07,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 241 transitions, 655 flow [2022-11-16 11:26:07,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 241 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:26:07,767 INFO L231 Difference]: Finished difference. Result has 250 places, 241 transitions, 626 flow [2022-11-16 11:26:07,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=626, PETRI_PLACES=250, PETRI_TRANSITIONS=241} [2022-11-16 11:26:07,768 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 15 predicate places. [2022-11-16 11:26:07,768 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 241 transitions, 626 flow [2022-11-16 11:26:07,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:07,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:07,769 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:26:07,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 11:26:07,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:26:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:07,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1491616235, now seen corresponding path program 1 times [2022-11-16 11:26:07,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:07,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014746105] [2022-11-16 11:26:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:07,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:07,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:07,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014746105] [2022-11-16 11:26:07,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014746105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:07,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700901663] [2022-11-16 11:26:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:07,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:07,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:26:07,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:26:07,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:26:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:07,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:26:07,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:08,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:26:08,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700901663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:08,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:26:08,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:26:08,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023051572] [2022-11-16 11:26:08,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:08,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:26:08,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:08,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:26:08,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:26:08,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 259 [2022-11-16 11:26:08,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 241 transitions, 626 flow. Second operand has 6 states, 6 states have (on average 211.66666666666666) internal successors, (1270), 6 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:08,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:08,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 259 [2022-11-16 11:26:08,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:26:08,762 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1133] t_funEXIT-->L716-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem13#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][144], [Black: 251#(= |t_funThread1of4ForFork0_#t~post5#1| 0), Black: 250#(= ~global~0 0), t_funThread1of4ForFork0NotInUse, 88#L716-5true, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, 149#L707-6true, t_funThread4of4ForFork0NotInUse, 271#(<= 1 |ULTIMATE.start_main_~i~0#1|), Black: 240#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 241#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 243#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 258#true, Black: 253#(and (= |t_funThread1of4ForFork0_#t~post5#1| 0) (= ~global~0 0))]) [2022-11-16 11:26:08,762 INFO L383 tUnfolder$Statistics]: this new event has 224 ancestors and is cut-off event [2022-11-16 11:26:08,762 INFO L386 tUnfolder$Statistics]: existing Event has 172 ancestors and is cut-off event [2022-11-16 11:26:08,762 INFO L386 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2022-11-16 11:26:08,762 INFO L386 tUnfolder$Statistics]: existing Event has 224 ancestors and is cut-off event [2022-11-16 11:26:08,780 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1133] t_funEXIT-->L716-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem13#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem13#1=|v_ULTIMATE.start_main_#t~mem13#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][144], [Black: 251#(= |t_funThread1of4ForFork0_#t~post5#1| 0), Black: 250#(= ~global~0 0), t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, 88#L716-5true, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 271#(<= 1 |ULTIMATE.start_main_~i~0#1|), Black: 240#(= |ULTIMATE.start_main_~i~0#1| 0), Black: 241#(= |ULTIMATE.start_main_#t~post8#1| 0), Black: 243#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_#t~post8#1| 0)), 258#true, Black: 253#(and (= |t_funThread1of4ForFork0_#t~post5#1| 0) (= ~global~0 0))]) [2022-11-16 11:26:08,781 INFO L383 tUnfolder$Statistics]: this new event has 251 ancestors and is cut-off event [2022-11-16 11:26:08,781 INFO L386 tUnfolder$Statistics]: existing Event has 95 ancestors and is cut-off event [2022-11-16 11:26:08,781 INFO L386 tUnfolder$Statistics]: existing Event has 147 ancestors and is cut-off event [2022-11-16 11:26:08,781 INFO L386 tUnfolder$Statistics]: existing Event has 147 ancestors and is cut-off event [2022-11-16 11:26:08,783 INFO L130 PetriNetUnfolder]: 161/2577 cut-off events. [2022-11-16 11:26:08,784 INFO L131 PetriNetUnfolder]: For 1080/2576 co-relation queries the response was YES. [2022-11-16 11:26:08,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3260 conditions, 2577 events. 161/2577 cut-off events. For 1080/2576 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 21313 event pairs, 59 based on Foata normal form. 38/2248 useless extension candidates. Maximal degree in co-relation 2504. Up to 203 conditions per place. [2022-11-16 11:26:08,828 INFO L137 encePairwiseOnDemand]: 254/259 looper letters, 19 selfloop transitions, 6 changer transitions 0/243 dead transitions. [2022-11-16 11:26:08,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 243 transitions, 678 flow [2022-11-16 11:26:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:26:08,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:26:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1489 transitions. [2022-11-16 11:26:08,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8212906784335355 [2022-11-16 11:26:08,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1489 transitions. [2022-11-16 11:26:08,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1489 transitions. [2022-11-16 11:26:08,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:26:08,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1489 transitions. [2022-11-16 11:26:08,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 212.71428571428572) internal successors, (1489), 7 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:08,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 259.0) internal successors, (2072), 8 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:08,840 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 259.0) internal successors, (2072), 8 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:08,841 INFO L175 Difference]: Start difference. First operand has 250 places, 241 transitions, 626 flow. Second operand 7 states and 1489 transitions. [2022-11-16 11:26:08,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 243 transitions, 678 flow [2022-11-16 11:26:08,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 243 transitions, 666 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:26:08,847 INFO L231 Difference]: Finished difference. Result has 252 places, 240 transitions, 622 flow [2022-11-16 11:26:08,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=622, PETRI_PLACES=252, PETRI_TRANSITIONS=240} [2022-11-16 11:26:08,848 INFO L288 CegarLoopForPetriNet]: 235 programPoint places, 17 predicate places. [2022-11-16 11:26:08,848 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 240 transitions, 622 flow [2022-11-16 11:26:08,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 211.66666666666666) internal successors, (1270), 6 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:08,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:26:08,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:08,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:09,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d690c5-59e9-4078-8b1c-bad0cc093112/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 11:26:09,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-16 11:26:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2105239776, now seen corresponding path program 1 times [2022-11-16 11:26:09,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:26:09,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449104041] [2022-11-16 11:26:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:26:09,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:26:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:26:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:26:09,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:26:09,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449104041] [2022-11-16 11:26:09,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449104041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:26:09,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:26:09,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:26:09,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325735815] [2022-11-16 11:26:09,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:26:09,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:26:09,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:26:09,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:26:09,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:26:09,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 259 [2022-11-16 11:26:09,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 240 transitions, 622 flow. Second operand has 6 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:26:09,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:26:09,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 259 [2022-11-16 11:26:09,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand